/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.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:39:24,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:39:24,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:39:24,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:39:24,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:39:24,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:39:24,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:39:24,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:39:24,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:39:24,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:39:24,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:39:24,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:39:24,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:39:24,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:39:24,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:39:24,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:39:24,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:39:24,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:39:24,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:39:24,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:39:24,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:39:24,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:39:24,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:39:24,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:39:24,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:39:24,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:39:24,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:39:24,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:39:24,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:39:24,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:39:24,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:39:24,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:39:24,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:39:24,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:39:24,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:39:24,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:39:24,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:39:24,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:39:24,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:39:24,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:39:24,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:39:24,288 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 09:39:24,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:39:24,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:39:24,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:39:24,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:39:24,311 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:39:24,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:39:24,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:39:24,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:39:24,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:39:24,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:39:24,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:39:24,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:39:24,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:39:24,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:39:24,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:39:24,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:39:24,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:39:24,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:39:24,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:39:24,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:39:24,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:39:24,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:39:24,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:39:24,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:39:24,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:39:24,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:39:24,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:39:24,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:39:24,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:39:24,316 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 09:39:24,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:39:24,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:39:24,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:39:24,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:39:24,623 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:39:24,624 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:39:24,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce6d233bf/c9a73a7042d743699978fd7598cf89c9/FLAGab2fd6302 [2020-10-14 09:39:25,283 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:39:25,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:39:25,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce6d233bf/c9a73a7042d743699978fd7598cf89c9/FLAGab2fd6302 [2020-10-14 09:39:25,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce6d233bf/c9a73a7042d743699978fd7598cf89c9 [2020-10-14 09:39:25,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:39:25,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:39:25,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:39:25,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:39:25,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:39:25,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:39:25" (1/1) ... [2020-10-14 09:39:25,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284e4e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:25, skipping insertion in model container [2020-10-14 09:39:25,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:39:25" (1/1) ... [2020-10-14 09:39:25,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:39:25,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:39:26,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:39:26,403 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:39:26,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:39:26,667 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:39:26,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26 WrapperNode [2020-10-14 09:39:26,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:39:26,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:39:26,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:39:26,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:39:26,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26" (1/1) ... [2020-10-14 09:39:26,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26" (1/1) ... [2020-10-14 09:39:26,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26" (1/1) ... [2020-10-14 09:39:26,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26" (1/1) ... [2020-10-14 09:39:26,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26" (1/1) ... [2020-10-14 09:39:26,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26" (1/1) ... [2020-10-14 09:39:26,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26" (1/1) ... [2020-10-14 09:39:26,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:39:26,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:39:26,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:39:26,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:39:26,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26" (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 09:39:26,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:39:26,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:39:26,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:39:26,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:39:26,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:39:26,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:39:26,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:39:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:39:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:39:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:39:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:39:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:39:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:39:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:39:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:39:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:39:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:39:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:39:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:39:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:39:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:39:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:39:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:39:29,470 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:39:29,470 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:39:29,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:39:29 BoogieIcfgContainer [2020-10-14 09:39:29,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:39:29,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:39:29,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:39:29,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:39:29,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:39:25" (1/3) ... [2020-10-14 09:39:29,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d653ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:39:29, skipping insertion in model container [2020-10-14 09:39:29,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:26" (2/3) ... [2020-10-14 09:39:29,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d653ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:39:29, skipping insertion in model container [2020-10-14 09:39:29,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:39:29" (3/3) ... [2020-10-14 09:39:29,492 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:39:29,503 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:39:29,516 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:39:29,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:39:29,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:39:29,558 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:39:29,558 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:39:29,558 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:39:29,559 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:39:29,559 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:39:29,559 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:39:29,559 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:39:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2020-10-14 09:39:29,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 09:39:29,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:29,625 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] [2020-10-14 09:39:29,626 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:29,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:29,633 INFO L82 PathProgramCache]: Analyzing trace with hash 202782792, now seen corresponding path program 1 times [2020-10-14 09:39:29,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:29,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370863851] [2020-10-14 09:39:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:31,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:33,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:35,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:35,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 09:39:35,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:39:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-14 09:39:35,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:35,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 09:39:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 09:39:35,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:39:36,570 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:39:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:36,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:36,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:36,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:36,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 09:39:36,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:36,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:39:36,774 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 09:39:36,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370863851] [2020-10-14 09:39:36,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:36,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:36,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203439851] [2020-10-14 09:39:36,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:36,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:36,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:36,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:36,807 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 4 states. [2020-10-14 09:39:37,592 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-14 09:39:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:43,297 INFO L93 Difference]: Finished difference Result 1239 states and 2192 transitions. [2020-10-14 09:39:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:39:43,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-14 09:39:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:43,339 INFO L225 Difference]: With dead ends: 1239 [2020-10-14 09:39:43,339 INFO L226 Difference]: Without dead ends: 998 [2020-10-14 09:39:43,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:39:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2020-10-14 09:39:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 995. [2020-10-14 09:39:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-10-14 09:39:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1722 transitions. [2020-10-14 09:39:43,515 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1722 transitions. Word has length 217 [2020-10-14 09:39:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:43,520 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1722 transitions. [2020-10-14 09:39:43,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1722 transitions. [2020-10-14 09:39:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 09:39:43,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:43,532 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] [2020-10-14 09:39:43,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:39:43,532 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:43,533 INFO L82 PathProgramCache]: Analyzing trace with hash 574669453, now seen corresponding path program 1 times [2020-10-14 09:39:43,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:43,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154864303] [2020-10-14 09:39:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:45,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:48,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:48,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 09:39:48,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:39:48,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-14 09:39:48,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:48,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-14 09:39:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 09:39:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:39:49,558 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:39:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:49,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:49,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:49,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:49,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:39:49,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:49,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:49,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:39:49,696 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 09:39:49,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154864303] [2020-10-14 09:39:49,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:49,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:49,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181697044] [2020-10-14 09:39:49,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:49,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:49,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:49,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:49,702 INFO L87 Difference]: Start difference. First operand 995 states and 1722 transitions. Second operand 4 states. [2020-10-14 09:39:50,415 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-14 09:39:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:56,012 INFO L93 Difference]: Finished difference Result 1857 states and 3178 transitions. [2020-10-14 09:39:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:39:56,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2020-10-14 09:39:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:56,026 INFO L225 Difference]: With dead ends: 1857 [2020-10-14 09:39:56,026 INFO L226 Difference]: Without dead ends: 1414 [2020-10-14 09:39:56,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:39:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-10-14 09:39:56,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1410. [2020-10-14 09:39:56,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1410 states. [2020-10-14 09:39:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2421 transitions. [2020-10-14 09:39:56,098 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2421 transitions. Word has length 221 [2020-10-14 09:39:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:56,100 INFO L479 AbstractCegarLoop]: Abstraction has 1410 states and 2421 transitions. [2020-10-14 09:39:56,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2421 transitions. [2020-10-14 09:39:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 09:39:56,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:56,113 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] [2020-10-14 09:39:56,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:39:56,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:56,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1976479662, now seen corresponding path program 1 times [2020-10-14 09:39:56,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:56,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457671244] [2020-10-14 09:39:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:57,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:57,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:58,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:59,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:00,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:01,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:01,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 09:40:01,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:40:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:40:01,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:01,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-14 09:40:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 09:40:01,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:02,340 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:40:02,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:02,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:02,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:02,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:02,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 09:40:02,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:02,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:02,592 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 09:40:02,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457671244] [2020-10-14 09:40:02,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:02,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:02,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077065060] [2020-10-14 09:40:02,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:02,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:02,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:02,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:02,596 INFO L87 Difference]: Start difference. First operand 1410 states and 2421 transitions. Second operand 4 states. [2020-10-14 09:40:03,291 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-14 09:40:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:08,436 INFO L93 Difference]: Finished difference Result 3078 states and 5231 transitions. [2020-10-14 09:40:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:08,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-14 09:40:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:08,449 INFO L225 Difference]: With dead ends: 3078 [2020-10-14 09:40:08,450 INFO L226 Difference]: Without dead ends: 2220 [2020-10-14 09:40:08,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2020-10-14 09:40:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2214. [2020-10-14 09:40:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2214 states. [2020-10-14 09:40:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3769 transitions. [2020-10-14 09:40:08,544 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3769 transitions. Word has length 225 [2020-10-14 09:40:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:08,548 INFO L479 AbstractCegarLoop]: Abstraction has 2214 states and 3769 transitions. [2020-10-14 09:40:08,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3769 transitions. [2020-10-14 09:40:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 09:40:08,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:08,554 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] [2020-10-14 09:40:08,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:40:08,554 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:08,555 INFO L82 PathProgramCache]: Analyzing trace with hash 659530007, now seen corresponding path program 1 times [2020-10-14 09:40:08,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:08,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140919812] [2020-10-14 09:40:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:08,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:09,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:13,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 09:40:13,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:40:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5217 [2020-10-14 09:40:13,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:13,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-14 09:40:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 09:40:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:14,774 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:40:14,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:14,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:14,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:14,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:14,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:40:14,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:14,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:14,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:14,901 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 09:40:14,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140919812] [2020-10-14 09:40:14,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:14,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:14,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286295776] [2020-10-14 09:40:14,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:14,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:14,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:14,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:14,904 INFO L87 Difference]: Start difference. First operand 2214 states and 3769 transitions. Second operand 4 states. [2020-10-14 09:40:15,588 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-14 09:40:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:20,687 INFO L93 Difference]: Finished difference Result 5442 states and 9187 transitions. [2020-10-14 09:40:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:20,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2020-10-14 09:40:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:20,708 INFO L225 Difference]: With dead ends: 5442 [2020-10-14 09:40:20,708 INFO L226 Difference]: Without dead ends: 3780 [2020-10-14 09:40:20,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:20,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2020-10-14 09:40:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3770. [2020-10-14 09:40:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3770 states. [2020-10-14 09:40:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 6365 transitions. [2020-10-14 09:40:20,846 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 6365 transitions. Word has length 229 [2020-10-14 09:40:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:20,847 INFO L479 AbstractCegarLoop]: Abstraction has 3770 states and 6365 transitions. [2020-10-14 09:40:20,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 6365 transitions. [2020-10-14 09:40:20,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 09:40:20,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:20,852 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] [2020-10-14 09:40:20,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:40:20,853 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:20,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1319679068, now seen corresponding path program 1 times [2020-10-14 09:40:20,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:20,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062318416] [2020-10-14 09:40:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:21,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:21,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:22,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:25,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:25,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 09:40:25,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:40:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 09:40:25,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:25,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 09:40:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:40:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:26,704 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:40:26,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:26,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:26,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:40:26,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:26,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:26,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:26,815 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 09:40:26,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062318416] [2020-10-14 09:40:26,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:26,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:26,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747059075] [2020-10-14 09:40:26,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:26,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:26,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:26,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:26,817 INFO L87 Difference]: Start difference. First operand 3770 states and 6365 transitions. Second operand 4 states. [2020-10-14 09:40:27,596 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-14 09:40:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:32,392 INFO L93 Difference]: Finished difference Result 9982 states and 16735 transitions. [2020-10-14 09:40:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:32,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 233 [2020-10-14 09:40:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:32,424 INFO L225 Difference]: With dead ends: 9982 [2020-10-14 09:40:32,425 INFO L226 Difference]: Without dead ends: 6764 [2020-10-14 09:40:32,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2020-10-14 09:40:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6746. [2020-10-14 09:40:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6746 states. [2020-10-14 09:40:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6746 states to 6746 states and 11229 transitions. [2020-10-14 09:40:32,713 INFO L78 Accepts]: Start accepts. Automaton has 6746 states and 11229 transitions. Word has length 233 [2020-10-14 09:40:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:32,714 INFO L479 AbstractCegarLoop]: Abstraction has 6746 states and 11229 transitions. [2020-10-14 09:40:32,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6746 states and 11229 transitions. [2020-10-14 09:40:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 09:40:32,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:32,723 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] [2020-10-14 09:40:32,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:40:32,726 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:32,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1087293857, now seen corresponding path program 1 times [2020-10-14 09:40:32,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:32,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415501540] [2020-10-14 09:40:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:33,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:33,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:33,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:34,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:35,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:37,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:40:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 09:40:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:38,756 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:40:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:38,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:38,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:38,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:40:38,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:38,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:38,881 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 09:40:38,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415501540] [2020-10-14 09:40:38,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:38,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:40:38,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900948854] [2020-10-14 09:40:38,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:40:38,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:40:38,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:38,884 INFO L87 Difference]: Start difference. First operand 6746 states and 11229 transitions. Second operand 5 states. [2020-10-14 09:40:44,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:44,563 INFO L93 Difference]: Finished difference Result 19937 states and 33173 transitions. [2020-10-14 09:40:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:44,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-14 09:40:44,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:44,619 INFO L225 Difference]: With dead ends: 19937 [2020-10-14 09:40:44,619 INFO L226 Difference]: Without dead ends: 13262 [2020-10-14 09:40:44,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:40:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13262 states. [2020-10-14 09:40:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13262 to 13260. [2020-10-14 09:40:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13260 states. [2020-10-14 09:40:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13260 states to 13260 states and 22011 transitions. [2020-10-14 09:40:45,314 INFO L78 Accepts]: Start accepts. Automaton has 13260 states and 22011 transitions. Word has length 237 [2020-10-14 09:40:45,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:45,315 INFO L479 AbstractCegarLoop]: Abstraction has 13260 states and 22011 transitions. [2020-10-14 09:40:45,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:40:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand 13260 states and 22011 transitions. [2020-10-14 09:40:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 09:40:45,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:45,325 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] [2020-10-14 09:40:45,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:40:45,325 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:45,326 INFO L82 PathProgramCache]: Analyzing trace with hash 818584985, now seen corresponding path program 1 times [2020-10-14 09:40:45,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:45,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496719596] [2020-10-14 09:40:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:45,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:50,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 09:40:50,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:40:50,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:40:50,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:50,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-14 09:40:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:40:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:51,127 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:40:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:51,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:51,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:51,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:51,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:40:51,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:51,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:51,196 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 09:40:51,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496719596] [2020-10-14 09:40:51,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:51,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:51,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700996807] [2020-10-14 09:40:51,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:51,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:51,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:51,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:51,198 INFO L87 Difference]: Start difference. First operand 13260 states and 22011 transitions. Second operand 4 states. [2020-10-14 09:40:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:56,580 INFO L93 Difference]: Finished difference Result 31240 states and 51845 transitions. [2020-10-14 09:40:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:40:56,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-10-14 09:40:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:56,631 INFO L225 Difference]: With dead ends: 31240 [2020-10-14 09:40:56,631 INFO L226 Difference]: Without dead ends: 19030 [2020-10-14 09:40:56,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19030 states. [2020-10-14 09:40:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19030 to 18676. [2020-10-14 09:40:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18676 states. [2020-10-14 09:40:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18676 states to 18676 states and 30803 transitions. [2020-10-14 09:40:57,280 INFO L78 Accepts]: Start accepts. Automaton has 18676 states and 30803 transitions. Word has length 238 [2020-10-14 09:40:57,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:57,280 INFO L479 AbstractCegarLoop]: Abstraction has 18676 states and 30803 transitions. [2020-10-14 09:40:57,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:57,280 INFO L276 IsEmpty]: Start isEmpty. Operand 18676 states and 30803 transitions. [2020-10-14 09:40:57,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 09:40:57,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:57,292 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] [2020-10-14 09:40:57,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:40:57,292 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:57,292 INFO L82 PathProgramCache]: Analyzing trace with hash 665720688, now seen corresponding path program 1 times [2020-10-14 09:40:57,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:57,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658143482] [2020-10-14 09:40:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:59,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:59,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:00,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:02,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:02,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 09:41:02,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:41:02,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 09:41:02,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:02,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 09:41:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 09:41:02,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:03,127 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:41:03,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:03,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:03,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:03,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:03,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:41:03,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:03,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:03,240 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 09:41:03,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658143482] [2020-10-14 09:41:03,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:03,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:03,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418224680] [2020-10-14 09:41:03,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:03,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:03,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:03,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:03,243 INFO L87 Difference]: Start difference. First operand 18676 states and 30803 transitions. Second operand 4 states. [2020-10-14 09:41:13,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:13,359 INFO L93 Difference]: Finished difference Result 55238 states and 91072 transitions. [2020-10-14 09:41:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:41:13,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-10-14 09:41:13,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:13,427 INFO L225 Difference]: With dead ends: 55238 [2020-10-14 09:41:13,427 INFO L226 Difference]: Without dead ends: 36718 [2020-10-14 09:41:13,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36718 states. [2020-10-14 09:41:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36718 to 36716. [2020-10-14 09:41:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36716 states. [2020-10-14 09:41:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36716 states to 36716 states and 60390 transitions. [2020-10-14 09:41:14,671 INFO L78 Accepts]: Start accepts. Automaton has 36716 states and 60390 transitions. Word has length 239 [2020-10-14 09:41:14,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:14,672 INFO L479 AbstractCegarLoop]: Abstraction has 36716 states and 60390 transitions. [2020-10-14 09:41:14,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 36716 states and 60390 transitions. [2020-10-14 09:41:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:41:14,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:14,691 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] [2020-10-14 09:41:14,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:41:14,691 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:14,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:14,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1592038119, now seen corresponding path program 1 times [2020-10-14 09:41:14,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:14,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197775124] [2020-10-14 09:41:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:15,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:19,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:19,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:41:19,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:41:19,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 09:41:19,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:19,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:19,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:19,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-14 09:41:19,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:41:19,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:20,544 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:41:20,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:20,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:20,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:20,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:41:20,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:20,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:20,610 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 09:41:20,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197775124] [2020-10-14 09:41:20,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:20,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:20,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637159101] [2020-10-14 09:41:20,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:20,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:20,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:20,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:20,612 INFO L87 Difference]: Start difference. First operand 36716 states and 60390 transitions. Second operand 4 states. [2020-10-14 09:41:21,327 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-14 09:41:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:28,087 INFO L93 Difference]: Finished difference Result 70400 states and 115924 transitions. [2020-10-14 09:41:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:41:28,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:41:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:28,167 INFO L225 Difference]: With dead ends: 70400 [2020-10-14 09:41:28,167 INFO L226 Difference]: Without dead ends: 47278 [2020-10-14 09:41:28,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:41:28,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47278 states. [2020-10-14 09:41:29,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47278 to 47276. [2020-10-14 09:41:29,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47276 states. [2020-10-14 09:41:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47276 states to 47276 states and 77714 transitions. [2020-10-14 09:41:31,164 INFO L78 Accepts]: Start accepts. Automaton has 47276 states and 77714 transitions. Word has length 240 [2020-10-14 09:41:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:31,165 INFO L479 AbstractCegarLoop]: Abstraction has 47276 states and 77714 transitions. [2020-10-14 09:41:31,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 47276 states and 77714 transitions. [2020-10-14 09:41:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:41:31,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:31,171 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] [2020-10-14 09:41:31,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:41:31,171 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:31,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:31,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1888422944, now seen corresponding path program 1 times [2020-10-14 09:41:31,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:31,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986572295] [2020-10-14 09:41:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:31,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:31,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:32,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:32,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:33,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:36,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:41:36,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:41:36,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 09:41:36,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:36,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:41:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:41:36,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:36,952 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:41:36,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:36,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:36,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:36,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:41:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:36,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:37,036 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 09:41:37,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986572295] [2020-10-14 09:41:37,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:37,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:37,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978128276] [2020-10-14 09:41:37,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:37,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:37,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:37,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:37,039 INFO L87 Difference]: Start difference. First operand 47276 states and 77714 transitions. Second operand 4 states. [2020-10-14 09:41:48,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:48,797 INFO L93 Difference]: Finished difference Result 141551 states and 232640 transitions. [2020-10-14 09:41:48,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:41:48,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:41:48,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:48,919 INFO L225 Difference]: With dead ends: 141551 [2020-10-14 09:41:48,920 INFO L226 Difference]: Without dead ends: 94417 [2020-10-14 09:41:48,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:49,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94417 states. [2020-10-14 09:41:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94417 to 47323. [2020-10-14 09:41:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47323 states. [2020-10-14 09:41:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47323 states to 47323 states and 77788 transitions. [2020-10-14 09:41:50,675 INFO L78 Accepts]: Start accepts. Automaton has 47323 states and 77788 transitions. Word has length 240 [2020-10-14 09:41:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:50,676 INFO L479 AbstractCegarLoop]: Abstraction has 47323 states and 77788 transitions. [2020-10-14 09:41:50,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:50,676 INFO L276 IsEmpty]: Start isEmpty. Operand 47323 states and 77788 transitions. [2020-10-14 09:41:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:41:50,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:50,685 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] [2020-10-14 09:41:50,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:41:50,685 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1925802418, now seen corresponding path program 1 times [2020-10-14 09:41:50,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:50,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661006711] [2020-10-14 09:41:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:51,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:56,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:56,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:41:56,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:41:56,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 09:41:56,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:56,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-14 09:41:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:41:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:56,828 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:41:56,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:56,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:56,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:56,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:41:56,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:56,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:56,899 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 09:41:56,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661006711] [2020-10-14 09:41:56,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:56,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:56,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466737867] [2020-10-14 09:41:56,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:56,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:56,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:56,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:56,901 INFO L87 Difference]: Start difference. First operand 47323 states and 77788 transitions. Second operand 4 states. [2020-10-14 09:42:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:04,525 INFO L93 Difference]: Finished difference Result 113279 states and 186446 transitions. [2020-10-14 09:42:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:42:04,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:42:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:04,668 INFO L225 Difference]: With dead ends: 113279 [2020-10-14 09:42:04,669 INFO L226 Difference]: Without dead ends: 68365 [2020-10-14 09:42:04,740 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 09:42:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68365 states. [2020-10-14 09:42:07,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68365 to 66955. [2020-10-14 09:42:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66955 states. [2020-10-14 09:42:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66955 states to 66955 states and 109296 transitions. [2020-10-14 09:42:07,597 INFO L78 Accepts]: Start accepts. Automaton has 66955 states and 109296 transitions. Word has length 240 [2020-10-14 09:42:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:07,598 INFO L479 AbstractCegarLoop]: Abstraction has 66955 states and 109296 transitions. [2020-10-14 09:42:07,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 66955 states and 109296 transitions. [2020-10-14 09:42:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 09:42:07,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:07,604 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] [2020-10-14 09:42:07,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:42:07,605 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:07,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:07,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2039142430, now seen corresponding path program 1 times [2020-10-14 09:42:07,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:07,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727288998] [2020-10-14 09:42:07,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:09,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:09,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:12,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:12,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 09:42:12,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:42:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 09:42:12,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:12,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:42:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:42:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 09:42:12,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:13,643 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:42:13,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:13,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:13,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:13,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:13,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:42:13,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:13,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:13,803 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 09:42:13,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727288998] [2020-10-14 09:42:13,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:13,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:42:13,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8750512] [2020-10-14 09:42:13,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:42:13,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:13,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:42:13,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:42:13,805 INFO L87 Difference]: Start difference. First operand 66955 states and 109296 transitions. Second operand 5 states. [2020-10-14 09:42:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:26,733 INFO L93 Difference]: Finished difference Result 198954 states and 324922 transitions. [2020-10-14 09:42:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:42:26,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-14 09:42:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:26,899 INFO L225 Difference]: With dead ends: 198954 [2020-10-14 09:42:26,899 INFO L226 Difference]: Without dead ends: 132228 [2020-10-14 09:42:26,957 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 09:42:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132228 states. [2020-10-14 09:42:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132228 to 132226. [2020-10-14 09:42:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132226 states. [2020-10-14 09:42:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132226 states to 132226 states and 215412 transitions. [2020-10-14 09:42:33,399 INFO L78 Accepts]: Start accepts. Automaton has 132226 states and 215412 transitions. Word has length 241 [2020-10-14 09:42:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:33,399 INFO L479 AbstractCegarLoop]: Abstraction has 132226 states and 215412 transitions. [2020-10-14 09:42:33,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:42:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 132226 states and 215412 transitions. [2020-10-14 09:42:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 09:42:33,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:33,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:33,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:42:33,412 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:33,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1031828096, now seen corresponding path program 1 times [2020-10-14 09:42:33,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:33,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533252661] [2020-10-14 09:42:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:38,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:38,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 09:42:38,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:42:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 09:42:38,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:38,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 09:42:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:42:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:42:39,345 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-14 09:42:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:39,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:39,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:39,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:42:39,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:39,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:39,412 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 09:42:39,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533252661] [2020-10-14 09:42:39,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:39,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:39,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11678676] [2020-10-14 09:42:39,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:39,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:39,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:39,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:39,414 INFO L87 Difference]: Start difference. First operand 132226 states and 215412 transitions. Second operand 4 states. [2020-10-14 09:42:40,180 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-14 09:42:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:53,433 INFO L93 Difference]: Finished difference Result 253798 states and 414422 transitions. [2020-10-14 09:42:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:42:53,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-10-14 09:42:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:53,700 INFO L225 Difference]: With dead ends: 253798 [2020-10-14 09:42:53,700 INFO L226 Difference]: Without dead ends: 168740 [2020-10-14 09:42:53,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:42:53,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168740 states.