/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_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:59:29,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:59:29,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:59:29,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:59:29,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:59:29,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:59:29,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:59:29,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:59:29,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:59:29,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:59:29,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:59:29,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:59:29,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:59:29,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:59:29,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:59:29,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:59:29,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:59:29,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:59:29,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:59:29,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:59:29,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:59:29,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:59:29,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:59:29,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:59:29,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:59:29,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:59:29,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:59:29,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:59:29,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:59:29,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:59:29,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:59:29,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:59:29,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:59:29,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:59:29,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:59:29,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:59:29,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:59:29,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:59:29,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:59:29,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:59:29,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:59:29,249 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 08:59:29,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:59:29,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:59:29,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:59:29,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:59:29,298 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:59:29,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:59:29,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:59:29,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:59:29,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:59:29,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:59:29,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:59:29,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:59:29,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:59:29,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:59:29,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:59:29,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:59:29,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:59:29,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:59:29,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:59:29,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:59:29,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:59:29,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:59:29,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:59:29,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:59:29,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:59:29,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:59:29,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:59:29,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:59:29,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:59:29,304 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 08:59:29,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:59:29,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:59:29,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:59:29,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:59:29,652 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:59:29,653 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2020-10-14 08:59:29,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e32d1a0b6/b0661cc6a3224c11a2290007446ea471/FLAGdf562641a [2020-10-14 08:59:30,706 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:59:30,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2020-10-14 08:59:30,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e32d1a0b6/b0661cc6a3224c11a2290007446ea471/FLAGdf562641a [2020-10-14 08:59:31,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e32d1a0b6/b0661cc6a3224c11a2290007446ea471 [2020-10-14 08:59:31,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:59:31,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:59:31,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:59:31,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:59:31,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:59:31,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:59:31" (1/1) ... [2020-10-14 08:59:31,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbd1661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:31, skipping insertion in model container [2020-10-14 08:59:31,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:59:31" (1/1) ... [2020-10-14 08:59:31,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:59:31,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:59:35,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:59:35,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:59:37,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:59:37,767 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:59:37,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37 WrapperNode [2020-10-14 08:59:37,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:59:37,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:59:37,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:59:37,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:59:37,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37" (1/1) ... [2020-10-14 08:59:37,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37" (1/1) ... [2020-10-14 08:59:37,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37" (1/1) ... [2020-10-14 08:59:37,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37" (1/1) ... [2020-10-14 08:59:38,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37" (1/1) ... [2020-10-14 08:59:38,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37" (1/1) ... [2020-10-14 08:59:38,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37" (1/1) ... [2020-10-14 08:59:38,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:59:38,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:59:38,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:59:38,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:59:38,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:59:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:59:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:59:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:59:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:59:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:59:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:59:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:59:38,339 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:59:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:59:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:59:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:59:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:59:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:59:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:59:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:59:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:59:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:59:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:59:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-14 08:59:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-14 08:59:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:59:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:59:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:59:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:59:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:59:49,239 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:59:49,240 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:59:49,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:59:49 BoogieIcfgContainer [2020-10-14 08:59:49,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:59:49,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:59:49,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:59:49,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:59:49,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:59:31" (1/3) ... [2020-10-14 08:59:49,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292e7453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:59:49, skipping insertion in model container [2020-10-14 08:59:49,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:37" (2/3) ... [2020-10-14 08:59:49,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292e7453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:59:49, skipping insertion in model container [2020-10-14 08:59:49,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:59:49" (3/3) ... [2020-10-14 08:59:49,278 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2020-10-14 08:59:49,288 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:59:49,300 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 37 error locations. [2020-10-14 08:59:49,310 INFO L251 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2020-10-14 08:59:49,342 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:59:49,343 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:59:49,343 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:59:49,343 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:59:49,343 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:59:49,343 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:59:49,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:59:49,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:59:49,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states. [2020-10-14 08:59:49,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 08:59:49,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:49,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:59:49,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:49,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:49,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1194695547, now seen corresponding path program 1 times [2020-10-14 08:59:49,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:49,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595216126] [2020-10-14 08:59:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:51,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:53,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:54,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:55,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:55,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 08:59:55,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:59:55,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 08:59:55,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:55,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:59:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:00:02,624 WARN L193 SmtUtils]: Spent 6.83 s on a formula simplification that was a NOOP. DAG size: 1261 [2020-10-14 09:00:02,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:02,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:02,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:02,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:02,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 09:00:02,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:02,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:00:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:00:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:00:03,050 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 09:00:03,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595216126] [2020-10-14 09:00:03,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:03,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:00:03,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131908164] [2020-10-14 09:00:03,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:00:03,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:03,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:00:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:00:03,081 INFO L87 Difference]: Start difference. First operand 3898 states. Second operand 6 states. [2020-10-14 09:00:09,700 WARN L193 SmtUtils]: Spent 6.40 s on a formula simplification that was a NOOP. DAG size: 1270 [2020-10-14 09:01:06,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:06,433 INFO L93 Difference]: Finished difference Result 6170 states and 10824 transitions. [2020-10-14 09:01:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:06,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-14 09:01:06,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:06,475 INFO L225 Difference]: With dead ends: 6170 [2020-10-14 09:01:06,475 INFO L226 Difference]: Without dead ends: 3734 [2020-10-14 09:01:06,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:01:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2020-10-14 09:01:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3610. [2020-10-14 09:01:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3610 states. [2020-10-14 09:01:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 4583 transitions. [2020-10-14 09:01:06,690 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 4583 transitions. Word has length 121 [2020-10-14 09:01:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:06,691 INFO L479 AbstractCegarLoop]: Abstraction has 3610 states and 4583 transitions. [2020-10-14 09:01:06,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 4583 transitions. [2020-10-14 09:01:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:01:06,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:06,703 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] [2020-10-14 09:01:06,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:01:06,704 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:06,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1069185159, now seen corresponding path program 1 times [2020-10-14 09:01:06,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:06,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951821122] [2020-10-14 09:01:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:06,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:07,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:08,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:09,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:11,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:11,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:01:11,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:01:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 09:01:11,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:11,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:01:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 09:01:11,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:18,323 WARN L193 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 1261 [2020-10-14 09:01:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:18,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:18,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:18,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:18,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 09:01:18,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:18,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:18,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:18,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:01:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:18,622 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 09:01:18,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951821122] [2020-10-14 09:01:18,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:18,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:01:18,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074821523] [2020-10-14 09:01:18,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:18,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:18,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:18,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:18,628 INFO L87 Difference]: Start difference. First operand 3610 states and 4583 transitions. Second operand 6 states. [2020-10-14 09:01:24,930 WARN L193 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 1267 [2020-10-14 09:01:58,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:58,694 INFO L93 Difference]: Finished difference Result 5746 states and 7565 transitions. [2020-10-14 09:01:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:58,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-14 09:01:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:58,711 INFO L225 Difference]: With dead ends: 5746 [2020-10-14 09:01:58,711 INFO L226 Difference]: Without dead ends: 2954 [2020-10-14 09:01:58,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:01:58,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-10-14 09:01:58,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2954. [2020-10-14 09:01:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2954 states. [2020-10-14 09:01:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 3861 transitions. [2020-10-14 09:01:58,837 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 3861 transitions. Word has length 122 [2020-10-14 09:01:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:58,837 INFO L479 AbstractCegarLoop]: Abstraction has 2954 states and 3861 transitions. [2020-10-14 09:01:58,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 3861 transitions. [2020-10-14 09:01:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 09:01:58,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:58,846 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] [2020-10-14 09:01:58,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:01:58,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:58,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:58,847 INFO L82 PathProgramCache]: Analyzing trace with hash -589373853, now seen corresponding path program 1 times [2020-10-14 09:01:58,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:58,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549542635] [2020-10-14 09:01:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:59,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:59,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:00,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:01,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:03,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:03,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 09:02:03,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:02:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 09:02:03,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:03,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 09:02:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:10,852 WARN L193 SmtUtils]: Spent 6.48 s on a formula simplification that was a NOOP. DAG size: 1261 [2020-10-14 09:02:10,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:10,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:11,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:11,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:11,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 09:02:11,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:11,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:11,161 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 09:02:11,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549542635] [2020-10-14 09:02:11,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:11,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:11,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863865833] [2020-10-14 09:02:11,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:11,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:11,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:11,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:11,167 INFO L87 Difference]: Start difference. First operand 2954 states and 3861 transitions. Second operand 6 states. [2020-10-14 09:02:17,499 WARN L193 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 1269 [2020-10-14 09:02:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:48,101 INFO L93 Difference]: Finished difference Result 6086 states and 8124 transitions. [2020-10-14 09:02:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:48,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-14 09:02:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:48,119 INFO L225 Difference]: With dead ends: 6086 [2020-10-14 09:02:48,119 INFO L226 Difference]: Without dead ends: 3694 [2020-10-14 09:02:48,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:02:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2020-10-14 09:02:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3568. [2020-10-14 09:02:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3568 states. [2020-10-14 09:02:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 4754 transitions. [2020-10-14 09:02:48,296 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 4754 transitions. Word has length 123 [2020-10-14 09:02:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:48,297 INFO L479 AbstractCegarLoop]: Abstraction has 3568 states and 4754 transitions. [2020-10-14 09:02:48,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 4754 transitions. [2020-10-14 09:02:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 09:02:48,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:48,308 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] [2020-10-14 09:02:48,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:02:48,309 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash -513938245, now seen corresponding path program 1 times [2020-10-14 09:02:48,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:48,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050937337] [2020-10-14 09:02:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:48,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:53,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 09:02:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:02:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 09:02:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:53,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 09:02:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:59,668 WARN L193 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 1261 [2020-10-14 09:02:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:59,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:59,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:59,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:59,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 09:02:59,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:59,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:59,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:59,920 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 09:02:59,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050937337] [2020-10-14 09:02:59,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:59,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:59,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494963103] [2020-10-14 09:02:59,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:59,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:59,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:59,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:59,925 INFO L87 Difference]: Start difference. First operand 3568 states and 4754 transitions. Second operand 6 states. [2020-10-14 09:03:06,115 WARN L193 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 1269