/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:38:16,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:38:16,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:38:16,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:38:16,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:38:16,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:38:16,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:38:16,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:38:16,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:38:16,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:38:16,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:38:16,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:38:16,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:38:16,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:38:16,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:38:16,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:38:16,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:38:16,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:38:16,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:38:16,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:38:16,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:38:16,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:38:16,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:38:16,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:38:16,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:38:16,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:38:16,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:38:16,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:38:16,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:38:16,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:38:16,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:38:16,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:38:16,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:38:16,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:38:16,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:38:16,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:38:16,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:38:16,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:38:16,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:38:16,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:38:16,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:38:16,566 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 [2020-10-14 09:38:16,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:38:16,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:38:16,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:38:16,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:38:16,617 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:38:16,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:38:16,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:38:16,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:38:16,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:38:16,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:38:16,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:38:16,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:38:16,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:38:16,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:38:16,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:38:16,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:38:16,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:38:16,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:38:16,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:38:16,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:38:16,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:38:16,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:38:16,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:38:16,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:38:16,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:38:16,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:38:16,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:38:16,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:38:16,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:38:16,625 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:38:16,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:38:16,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:38:16,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:38:16,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:38:16,968 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:38:16,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:38:17,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a90a5dca4/d1c983bf31b542ffb39268c92ea92c59/FLAGba76a2bc7 [2020-10-14 09:38:17,744 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:38:17,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:38:17,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a90a5dca4/d1c983bf31b542ffb39268c92ea92c59/FLAGba76a2bc7 [2020-10-14 09:38:17,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a90a5dca4/d1c983bf31b542ffb39268c92ea92c59 [2020-10-14 09:38:17,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:38:17,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:38:17,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:38:17,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:38:17,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:38:17,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:38:17" (1/1) ... [2020-10-14 09:38:17,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d84853b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:17, skipping insertion in model container [2020-10-14 09:38:17,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:38:17" (1/1) ... [2020-10-14 09:38:17,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:38:18,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:38:19,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:38:19,527 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:38:21,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:38:21,058 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:38:21,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21 WrapperNode [2020-10-14 09:38:21,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:38:21,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:38:21,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:38:21,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:38:21,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21" (1/1) ... [2020-10-14 09:38:21,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21" (1/1) ... [2020-10-14 09:38:21,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21" (1/1) ... [2020-10-14 09:38:21,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21" (1/1) ... [2020-10-14 09:38:21,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21" (1/1) ... [2020-10-14 09:38:21,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21" (1/1) ... [2020-10-14 09:38:21,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21" (1/1) ... [2020-10-14 09:38:21,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:38:21,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:38:21,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:38:21,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:38:21,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21" (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 [2020-10-14 09:38:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:38:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:38:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:38:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:38:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:38:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:38:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:38:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:38:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:38:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:38:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:38:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:38:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:38:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:38:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:38:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:38:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:38:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:38:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:38:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:38:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:38:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:38:25,384 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:38:25,384 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:38:25,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:38:25 BoogieIcfgContainer [2020-10-14 09:38:25,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:38:25,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:38:25,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:38:25,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:38:25,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:38:17" (1/3) ... [2020-10-14 09:38:25,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2396fc26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:38:25, skipping insertion in model container [2020-10-14 09:38:25,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:38:21" (2/3) ... [2020-10-14 09:38:25,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2396fc26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:38:25, skipping insertion in model container [2020-10-14 09:38:25,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:38:25" (3/3) ... [2020-10-14 09:38:25,405 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:38:25,417 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:38:25,427 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:38:25,447 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:38:25,478 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:38:25,478 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:38:25,478 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:38:25,479 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:38:25,479 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:38:25,479 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:38:25,479 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:38:25,479 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:38:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states. [2020-10-14 09:38:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-14 09:38:25,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:25,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:25,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:25,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:25,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1961833088, now seen corresponding path program 1 times [2020-10-14 09:38:25,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:25,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874787207] [2020-10-14 09:38:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:29,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:32,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:32,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:32,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-14 09:38:32,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:38:32,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5259 [2020-10-14 09:38:32,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:32,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:38:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:38:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-14 09:38:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:38:34,191 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-14 09:38:34,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:34,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:34,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:34,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:34,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 09:38:34,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:34,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:35,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874787207] [2020-10-14 09:38:35,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:35,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:38:35,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038169561] [2020-10-14 09:38:35,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:38:35,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:35,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:38:35,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:35,123 INFO L87 Difference]: Start difference. First operand 1431 states. Second operand 5 states. [2020-10-14 09:38:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:51,376 INFO L93 Difference]: Finished difference Result 4236 states and 7632 transitions. [2020-10-14 09:38:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:38:51,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 487 [2020-10-14 09:38:51,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:51,443 INFO L225 Difference]: With dead ends: 4236 [2020-10-14 09:38:51,444 INFO L226 Difference]: Without dead ends: 2814 [2020-10-14 09:38:51,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:38:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2020-10-14 09:38:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2020-10-14 09:38:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2020-10-14 09:38:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4639 transitions. [2020-10-14 09:38:51,784 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4639 transitions. Word has length 487 [2020-10-14 09:38:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:51,791 INFO L479 AbstractCegarLoop]: Abstraction has 2812 states and 4639 transitions. [2020-10-14 09:38:51,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:38:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4639 transitions. [2020-10-14 09:38:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-14 09:38:51,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:51,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:51,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:38:51,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash 39211808, now seen corresponding path program 1 times [2020-10-14 09:38:51,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:51,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172594593] [2020-10-14 09:38:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:55,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:56,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:57,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:57,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-14 09:38:57,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:38:57,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5224 [2020-10-14 09:38:57,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:57,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 09:38:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 09:38:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 09:38:58,614 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-14 09:38:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:58,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:58,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:58,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:58,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:58,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 09:38:58,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:58,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:59,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172594593] [2020-10-14 09:38:59,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:59,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:59,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996862098] [2020-10-14 09:38:59,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:59,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:59,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:59,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:59,030 INFO L87 Difference]: Start difference. First operand 2812 states and 4639 transitions. Second operand 4 states. [2020-10-14 09:39:18,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:18,568 INFO L93 Difference]: Finished difference Result 8158 states and 13422 transitions. [2020-10-14 09:39:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:39:18,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 489 [2020-10-14 09:39:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:18,602 INFO L225 Difference]: With dead ends: 8158 [2020-10-14 09:39:18,602 INFO L226 Difference]: Without dead ends: 5560 [2020-10-14 09:39:18,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2020-10-14 09:39:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5558. [2020-10-14 09:39:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5558 states. [2020-10-14 09:39:18,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 9141 transitions. [2020-10-14 09:39:18,804 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 9141 transitions. Word has length 489 [2020-10-14 09:39:18,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:18,805 INFO L479 AbstractCegarLoop]: Abstraction has 5558 states and 9141 transitions. [2020-10-14 09:39:18,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 9141 transitions. [2020-10-14 09:39:18,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-14 09:39:18,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:18,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:18,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:39:18,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:18,827 INFO L82 PathProgramCache]: Analyzing trace with hash -960654715, now seen corresponding path program 1 times [2020-10-14 09:39:18,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:18,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741650984] [2020-10-14 09:39:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:19,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:20,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:21,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:24,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:24,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-14 09:39:24,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:39:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-14 09:39:24,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:24,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:24,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:24,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:39:24,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-14 09:39:24,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:39:25,016 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-14 09:39:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:25,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:25,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:25,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 09:39:25,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:25,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:25,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:39:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:25,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741650984] [2020-10-14 09:39:25,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:25,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:25,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300205367] [2020-10-14 09:39:25,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:25,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:25,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:25,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:25,497 INFO L87 Difference]: Start difference. First operand 5558 states and 9141 transitions. Second operand 4 states. [2020-10-14 09:39:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:43,478 INFO L93 Difference]: Finished difference Result 16072 states and 26338 transitions. [2020-10-14 09:39:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:39:43,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 490 [2020-10-14 09:39:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:43,533 INFO L225 Difference]: With dead ends: 16072 [2020-10-14 09:39:43,533 INFO L226 Difference]: Without dead ends: 10866 [2020-10-14 09:39:43,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10866 states. [2020-10-14 09:39:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10866 to 10864. [2020-10-14 09:39:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10864 states. [2020-10-14 09:39:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10864 states to 10864 states and 17779 transitions. [2020-10-14 09:39:44,110 INFO L78 Accepts]: Start accepts. Automaton has 10864 states and 17779 transitions. Word has length 490 [2020-10-14 09:39:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:44,111 INFO L479 AbstractCegarLoop]: Abstraction has 10864 states and 17779 transitions. [2020-10-14 09:39:44,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 10864 states and 17779 transitions. [2020-10-14 09:39:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-14 09:39:44,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:44,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:44,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:39:44,149 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:44,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:44,150 INFO L82 PathProgramCache]: Analyzing trace with hash -649920288, now seen corresponding path program 1 times [2020-10-14 09:39:44,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:44,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720015404] [2020-10-14 09:39:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:44,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:46,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:49,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:49,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-14 09:39:49,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:39:49,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 09:39:49,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:49,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:39:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 09:39:49,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:39:50,286 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-14 09:39:50,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:50,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:50,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:50,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:50,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:50,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:39:50,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:50,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:50,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:50,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720015404] [2020-10-14 09:39:50,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:50,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:50,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481884496] [2020-10-14 09:39:50,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:50,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:50,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:50,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:50,462 INFO L87 Difference]: Start difference. First operand 10864 states and 17779 transitions. Second operand 4 states. [2020-10-14 09:40:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:09,314 INFO L93 Difference]: Finished difference Result 32435 states and 53053 transitions. [2020-10-14 09:40:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:40:09,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 490 [2020-10-14 09:40:09,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:09,379 INFO L225 Difference]: With dead ends: 32435 [2020-10-14 09:40:09,380 INFO L226 Difference]: Without dead ends: 21647 [2020-10-14 09:40:09,403 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 [2020-10-14 09:40:09,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21647 states. [2020-10-14 09:40:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21647 to 10925. [2020-10-14 09:40:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10925 states. [2020-10-14 09:40:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10925 states to 10925 states and 17871 transitions. [2020-10-14 09:40:10,048 INFO L78 Accepts]: Start accepts. Automaton has 10925 states and 17871 transitions. Word has length 490 [2020-10-14 09:40:10,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:10,049 INFO L479 AbstractCegarLoop]: Abstraction has 10925 states and 17871 transitions. [2020-10-14 09:40:10,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 10925 states and 17871 transitions. [2020-10-14 09:40:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-14 09:40:10,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:10,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:10,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:40:10,090 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:10,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:10,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1657729410, now seen corresponding path program 1 times [2020-10-14 09:40:10,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:10,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697279600] [2020-10-14 09:40:10,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:11,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:11,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:11,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:12,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:14,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:14,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:15,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:15,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:15,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-14 09:40:15,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:40:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 09:40:15,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:15,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:15,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:15,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:40:15,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-14 09:40:15,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:17,112 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-14 09:40:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:17,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:17,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:17,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:17,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:40:17,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:17,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:17,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697279600] [2020-10-14 09:40:17,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:17,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:17,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246075728] [2020-10-14 09:40:17,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:17,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:17,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:17,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:17,389 INFO L87 Difference]: Start difference. First operand 10925 states and 17871 transitions. Second operand 4 states. [2020-10-14 09:40:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:36,717 INFO L93 Difference]: Finished difference Result 31436 states and 51225 transitions. [2020-10-14 09:40:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:40:36,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 491 [2020-10-14 09:40:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:36,768 INFO L225 Difference]: With dead ends: 31436 [2020-10-14 09:40:36,769 INFO L226 Difference]: Without dead ends: 21258 [2020-10-14 09:40:36,791 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 [2020-10-14 09:40:36,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21258 states. [2020-10-14 09:40:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21258 to 21256. [2020-10-14 09:40:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21256 states. [2020-10-14 09:40:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21256 states to 21256 states and 34583 transitions. [2020-10-14 09:40:37,428 INFO L78 Accepts]: Start accepts. Automaton has 21256 states and 34583 transitions. Word has length 491 [2020-10-14 09:40:37,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:37,429 INFO L479 AbstractCegarLoop]: Abstraction has 21256 states and 34583 transitions. [2020-10-14 09:40:37,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:37,429 INFO L276 IsEmpty]: Start isEmpty. Operand 21256 states and 34583 transitions. [2020-10-14 09:40:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-14 09:40:37,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:37,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:37,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:40:37,475 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:37,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:37,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1976375937, now seen corresponding path program 1 times [2020-10-14 09:40:37,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:37,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261887526] [2020-10-14 09:40:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:37,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:38,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:39,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:39,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:39,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:41,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:42,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-14 09:40:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:40:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:40:42,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:42,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 09:40:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 09:40:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:43,398 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-14 09:40:43,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:43,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:43,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:43,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:40:43,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:43,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:43,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261887526] [2020-10-14 09:40:43,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:43,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:43,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795424590] [2020-10-14 09:40:43,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:43,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:43,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:43,661 INFO L87 Difference]: Start difference. First operand 21256 states and 34583 transitions. Second operand 4 states. [2020-10-14 09:41:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:04,440 INFO L93 Difference]: Finished difference Result 63530 states and 103328 transitions. [2020-10-14 09:41:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:41:04,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 491 [2020-10-14 09:41:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:04,507 INFO L225 Difference]: With dead ends: 63530 [2020-10-14 09:41:04,507 INFO L226 Difference]: Without dead ends: 42388 [2020-10-14 09:41:04,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42388 states. [2020-10-14 09:41:05,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42388 to 21394. [2020-10-14 09:41:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21394 states. [2020-10-14 09:41:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21394 states to 21394 states and 34780 transitions. [2020-10-14 09:41:05,398 INFO L78 Accepts]: Start accepts. Automaton has 21394 states and 34780 transitions. Word has length 491 [2020-10-14 09:41:05,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:05,399 INFO L479 AbstractCegarLoop]: Abstraction has 21394 states and 34780 transitions. [2020-10-14 09:41:05,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 21394 states and 34780 transitions. [2020-10-14 09:41:05,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-14 09:41:05,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:05,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:05,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:41:05,448 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:05,449 INFO L82 PathProgramCache]: Analyzing trace with hash -791005395, now seen corresponding path program 1 times [2020-10-14 09:41:05,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:05,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760163762] [2020-10-14 09:41:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:06,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:07,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:07,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:10,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:10,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-14 09:41:10,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:41:10,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 09:41:10,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:10,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:10,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:10,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:41:10,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 09:41:10,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:11,434 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-14 09:41:11,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:11,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:11,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:11,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:11,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:41:11,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:11,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:11,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:41:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:11,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760163762] [2020-10-14 09:41:11,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:11,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:11,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805135906] [2020-10-14 09:41:11,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:11,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:11,874 INFO L87 Difference]: Start difference. First operand 21394 states and 34780 transitions. Second operand 4 states. [2020-10-14 09:41:33,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:33,444 INFO L93 Difference]: Finished difference Result 63740 states and 103639 transitions. [2020-10-14 09:41:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:41:33,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 492 [2020-10-14 09:41:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:33,506 INFO L225 Difference]: With dead ends: 63740 [2020-10-14 09:41:33,506 INFO L226 Difference]: Without dead ends: 42564 [2020-10-14 09:41:33,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42564 states. [2020-10-14 09:41:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42564 to 21546. [2020-10-14 09:41:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21546 states. [2020-10-14 09:41:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21546 states to 21546 states and 34987 transitions. [2020-10-14 09:41:34,540 INFO L78 Accepts]: Start accepts. Automaton has 21546 states and 34987 transitions. Word has length 492 [2020-10-14 09:41:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:34,541 INFO L479 AbstractCegarLoop]: Abstraction has 21546 states and 34987 transitions. [2020-10-14 09:41:34,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 21546 states and 34987 transitions. [2020-10-14 09:41:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-14 09:41:34,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:34,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:34,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:41:34,561 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:34,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1122991245, now seen corresponding path program 1 times [2020-10-14 09:41:34,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:34,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124667889] [2020-10-14 09:41:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:37,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:39,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:39,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-14 09:41:39,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:41:39,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 09:41:39,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:39,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:39,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:41:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:41:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-14 09:41:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:40,980 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-14 09:41:40,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:40,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:41,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:41,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:41,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:41,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:41:41,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:41,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:41,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:41,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124667889] [2020-10-14 09:41:41,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:41,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:41:41,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406165927] [2020-10-14 09:41:41,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:41:41,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:41,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:41:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:41:41,319 INFO L87 Difference]: Start difference. First operand 21546 states and 34987 transitions. Second operand 5 states. [2020-10-14 09:41:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:59,867 INFO L93 Difference]: Finished difference Result 63077 states and 102415 transitions. [2020-10-14 09:41:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:41:59,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-10-14 09:41:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:59,924 INFO L225 Difference]: With dead ends: 63077 [2020-10-14 09:41:59,924 INFO L226 Difference]: Without dead ends: 42243 [2020-10-14 09:41:59,949 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 [2020-10-14 09:41:59,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42243 states. [2020-10-14 09:42:01,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42243 to 42241. [2020-10-14 09:42:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42241 states. [2020-10-14 09:42:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42241 states to 42241 states and 68314 transitions. [2020-10-14 09:42:01,626 INFO L78 Accepts]: Start accepts. Automaton has 42241 states and 68314 transitions. Word has length 493 [2020-10-14 09:42:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:01,626 INFO L479 AbstractCegarLoop]: Abstraction has 42241 states and 68314 transitions. [2020-10-14 09:42:01,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:42:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 42241 states and 68314 transitions. [2020-10-14 09:42:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-14 09:42:01,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:01,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:01,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:42:01,931 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:01,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:01,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1854158978, now seen corresponding path program 1 times [2020-10-14 09:42:01,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:01,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094038826] [2020-10-14 09:42:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:02,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:03,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:04,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking...