/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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:27:08,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:27:08,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:27:08,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:27:08,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:27:08,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:27:08,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:27:08,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:27:08,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:27:08,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:27:08,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:27:08,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:27:08,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:27:08,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:27:08,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:27:08,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:27:08,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:27:08,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:27:08,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:27:08,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:27:08,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:27:08,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:27:08,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:27:08,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:27:08,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:27:08,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:27:08,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:27:08,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:27:08,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:27:08,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:27:08,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:27:08,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:27:08,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:27:08,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:27:08,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:27:08,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:27:08,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:27:08,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:27:08,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:27:08,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:27:08,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:27:08,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:27:08,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:27:08,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:27:08,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:27:08,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:27:08,412 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:27:08,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:27:08,413 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:27:08,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:27:08,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:27:08,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:27:08,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:27:08,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:27:08,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:27:08,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:27:08,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:27:08,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:27:08,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:27:08,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:27:08,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:27:08,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:27:08,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:27:08,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:27:08,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:27:08,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:27:08,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:27:08,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:27:08,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:27:08,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:27:08,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:27:08,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:27:08,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:27:08,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:27:08,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:27:08,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:27:08,760 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:27:08,761 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 08:27:08,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7abd903f/965058968aff4d2ba6bf1ec677bd0ff5/FLAGd5b5f31e8 [2020-10-14 08:27:09,423 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:27:09,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 08:27:09,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7abd903f/965058968aff4d2ba6bf1ec677bd0ff5/FLAGd5b5f31e8 [2020-10-14 08:27:09,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7abd903f/965058968aff4d2ba6bf1ec677bd0ff5 [2020-10-14 08:27:09,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:27:09,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:27:09,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:27:09,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:27:09,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:27:09,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:27:09" (1/1) ... [2020-10-14 08:27:09,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b0f1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:09, skipping insertion in model container [2020-10-14 08:27:09,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:27:09" (1/1) ... [2020-10-14 08:27:09,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:27:09,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:27:10,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:27:10,551 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:27:10,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:27:10,881 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:27:10,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10 WrapperNode [2020-10-14 08:27:10,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:27:10,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:27:10,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:27:10,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:27:10,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10" (1/1) ... [2020-10-14 08:27:10,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10" (1/1) ... [2020-10-14 08:27:10,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10" (1/1) ... [2020-10-14 08:27:10,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10" (1/1) ... [2020-10-14 08:27:11,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10" (1/1) ... [2020-10-14 08:27:11,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10" (1/1) ... [2020-10-14 08:27:11,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10" (1/1) ... [2020-10-14 08:27:11,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:27:11,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:27:11,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:27:11,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:27:11,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:27:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:27:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:27:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:27:11,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:27:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:27:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:27:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:27:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:27:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:27:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:27:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:27:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:27:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:27:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:27:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:27:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:27:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:27:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:27:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:27:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:27:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:27:13,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:27:13,247 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:27:13,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:27:13 BoogieIcfgContainer [2020-10-14 08:27:13,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:27:13,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:27:13,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:27:13,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:27:13,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:27:09" (1/3) ... [2020-10-14 08:27:13,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b885b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:27:13, skipping insertion in model container [2020-10-14 08:27:13,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:27:10" (2/3) ... [2020-10-14 08:27:13,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b885b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:27:13, skipping insertion in model container [2020-10-14 08:27:13,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:27:13" (3/3) ... [2020-10-14 08:27:13,265 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 08:27:13,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:27:13,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 08:27:13,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 08:27:13,330 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:27:13,330 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:27:13,330 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:27:13,330 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:27:13,330 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:27:13,330 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:27:13,331 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:27:13,331 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:27:13,360 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states. [2020-10-14 08:27:13,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 08:27:13,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:13,391 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] [2020-10-14 08:27:13,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:13,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1297464271, now seen corresponding path program 1 times [2020-10-14 08:27:13,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:13,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756746303] [2020-10-14 08:27:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:15,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:16,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:16,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:18,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:18,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:18,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:18,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:19,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:19,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 08:27:19,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:27:19,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 08:27:19,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:19,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:27:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:27:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 08:27:19,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:27:20,191 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:27:20,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:20,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:20,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:20,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:20,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:27:20,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:20,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:20,487 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 08:27:20,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756746303] [2020-10-14 08:27:20,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:20,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:20,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817917479] [2020-10-14 08:27:20,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:27:20,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:20,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:27:20,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:20,528 INFO L87 Difference]: Start difference. First operand 618 states. Second operand 5 states. [2020-10-14 08:27:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:28,114 INFO L93 Difference]: Finished difference Result 1774 states and 3183 transitions. [2020-10-14 08:27:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:27:28,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-14 08:27:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:28,145 INFO L225 Difference]: With dead ends: 1774 [2020-10-14 08:27:28,145 INFO L226 Difference]: Without dead ends: 1199 [2020-10-14 08:27:28,153 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 08:27:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-10-14 08:27:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1166. [2020-10-14 08:27:28,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-14 08:27:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1818 transitions. [2020-10-14 08:27:28,305 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1818 transitions. Word has length 235 [2020-10-14 08:27:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:28,306 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1818 transitions. [2020-10-14 08:27:28,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:27:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1818 transitions. [2020-10-14 08:27:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 08:27:28,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:28,315 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 08:27:28,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:27:28,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:28,316 INFO L82 PathProgramCache]: Analyzing trace with hash -263537185, now seen corresponding path program 1 times [2020-10-14 08:27:28,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:28,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630678114] [2020-10-14 08:27:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:29,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:30,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:30,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:30,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:33,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 08:27:33,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:27:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:27:33,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:33,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:33,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:27:33,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:27:33,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 08:27:33,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:34,249 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:27:34,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:34,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:34,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:34,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 08:27:34,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:34,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:34,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:27:34,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630678114] [2020-10-14 08:27:34,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:34,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:27:34,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558618420] [2020-10-14 08:27:34,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:27:34,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:34,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:27:34,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:27:34,616 INFO L87 Difference]: Start difference. First operand 1166 states and 1818 transitions. Second operand 4 states. [2020-10-14 08:27:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:41,520 INFO L93 Difference]: Finished difference Result 3324 states and 5153 transitions. [2020-10-14 08:27:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:27:41,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 237 [2020-10-14 08:27:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:41,536 INFO L225 Difference]: With dead ends: 3324 [2020-10-14 08:27:41,537 INFO L226 Difference]: Without dead ends: 2287 [2020-10-14 08:27:41,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:27:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2020-10-14 08:27:41,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2256. [2020-10-14 08:27:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2256 states. [2020-10-14 08:27:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3503 transitions. [2020-10-14 08:27:41,725 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3503 transitions. Word has length 237 [2020-10-14 08:27:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:41,727 INFO L479 AbstractCegarLoop]: Abstraction has 2256 states and 3503 transitions. [2020-10-14 08:27:41,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:27:41,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3503 transitions. [2020-10-14 08:27:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 08:27:41,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:41,736 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 08:27:41,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:27:41,736 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:41,737 INFO L82 PathProgramCache]: Analyzing trace with hash -54729030, now seen corresponding path program 1 times [2020-10-14 08:27:41,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:41,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553122768] [2020-10-14 08:27:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:41,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:41,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:46,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:46,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 08:27:46,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:27:46,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 08:27:46,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:46,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:27:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:27:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:27:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:47,643 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:27:47,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:47,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:47,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:47,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:47,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:27:47,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:47,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:27:47,768 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 08:27:47,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553122768] [2020-10-14 08:27:47,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:47,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:27:47,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076252687] [2020-10-14 08:27:47,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:27:47,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:47,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:27:47,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:27:47,776 INFO L87 Difference]: Start difference. First operand 2256 states and 3503 transitions. Second operand 4 states. [2020-10-14 08:27:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:54,715 INFO L93 Difference]: Finished difference Result 6691 states and 10374 transitions. [2020-10-14 08:27:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:27:54,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 237 [2020-10-14 08:27:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:54,742 INFO L225 Difference]: With dead ends: 6691 [2020-10-14 08:27:54,742 INFO L226 Difference]: Without dead ends: 4474 [2020-10-14 08:27:54,748 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 08:27:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2020-10-14 08:27:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 2270. [2020-10-14 08:27:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2270 states. [2020-10-14 08:27:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 3520 transitions. [2020-10-14 08:27:54,882 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 3520 transitions. Word has length 237 [2020-10-14 08:27:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:54,882 INFO L479 AbstractCegarLoop]: Abstraction has 2270 states and 3520 transitions. [2020-10-14 08:27:54,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:27:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 3520 transitions. [2020-10-14 08:27:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 08:27:54,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:54,896 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 08:27:54,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:27:54,896 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:54,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:54,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1682380155, now seen corresponding path program 1 times [2020-10-14 08:27:54,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:54,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10318894] [2020-10-14 08:27:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:54,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:55,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:59,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:59,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 08:27:59,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:27:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:27:59,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:59,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:27:59,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:27:59,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 08:27:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:00,550 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:28:00,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:00,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:00,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:00,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:00,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:28:00,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:00,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:00,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:00,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:28:00,744 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 08:28:00,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10318894] [2020-10-14 08:28:00,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:00,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:00,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030191274] [2020-10-14 08:28:00,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:00,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:00,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:00,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:00,747 INFO L87 Difference]: Start difference. First operand 2270 states and 3520 transitions. Second operand 4 states. [2020-10-14 08:28:07,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:07,342 INFO L93 Difference]: Finished difference Result 6424 states and 9895 transitions. [2020-10-14 08:28:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:07,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-10-14 08:28:07,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:07,361 INFO L225 Difference]: With dead ends: 6424 [2020-10-14 08:28:07,361 INFO L226 Difference]: Without dead ends: 4376 [2020-10-14 08:28:07,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:07,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2020-10-14 08:28:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4347. [2020-10-14 08:28:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4347 states. [2020-10-14 08:28:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 6690 transitions. [2020-10-14 08:28:07,579 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 6690 transitions. Word has length 238 [2020-10-14 08:28:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:07,580 INFO L479 AbstractCegarLoop]: Abstraction has 4347 states and 6690 transitions. [2020-10-14 08:28:07,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 6690 transitions. [2020-10-14 08:28:07,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 08:28:07,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:07,591 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 08:28:07,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:28:07,592 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:07,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:07,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1318085368, now seen corresponding path program 1 times [2020-10-14 08:28:07,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:07,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610533451] [2020-10-14 08:28:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:10,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:10,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:12,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:12,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 08:28:12,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:28:12,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 08:28:12,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:12,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 08:28:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:28:12,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:28:13,177 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:28:13,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:13,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:13,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:13,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:13,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:28:13,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:13,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:28:13,256 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 08:28:13,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610533451] [2020-10-14 08:28:13,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:13,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:13,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675601700] [2020-10-14 08:28:13,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:13,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:13,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:13,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:13,258 INFO L87 Difference]: Start difference. First operand 4347 states and 6690 transitions. Second operand 4 states. [2020-10-14 08:28:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:20,085 INFO L93 Difference]: Finished difference Result 12914 states and 19865 transitions. [2020-10-14 08:28:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:20,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-10-14 08:28:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:20,121 INFO L225 Difference]: With dead ends: 12914 [2020-10-14 08:28:20,122 INFO L226 Difference]: Without dead ends: 8636 [2020-10-14 08:28:20,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8636 states. [2020-10-14 08:28:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8636 to 4378. [2020-10-14 08:28:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2020-10-14 08:28:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6734 transitions. [2020-10-14 08:28:20,433 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6734 transitions. Word has length 238 [2020-10-14 08:28:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:20,433 INFO L479 AbstractCegarLoop]: Abstraction has 4378 states and 6734 transitions. [2020-10-14 08:28:20,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6734 transitions. [2020-10-14 08:28:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 08:28:20,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:20,446 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 08:28:20,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:28:20,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:20,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1331721255, now seen corresponding path program 1 times [2020-10-14 08:28:20,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:20,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907689977] [2020-10-14 08:28:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:21,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:21,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:22,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:23,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:23,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:23,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:23,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:25,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:25,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 08:28:25,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:28:25,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:28:25,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:25,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:25,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:28:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:28:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 08:28:25,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:28:26,249 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:28:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:26,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:26,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:26,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 08:28:26,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:26,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:26,406 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 08:28:26,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907689977] [2020-10-14 08:28:26,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:26,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:28:26,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030301412] [2020-10-14 08:28:26,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:28:26,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:26,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:28:26,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:28:26,408 INFO L87 Difference]: Start difference. First operand 4378 states and 6734 transitions. Second operand 5 states. [2020-10-14 08:28:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:33,086 INFO L93 Difference]: Finished difference Result 12643 states and 19387 transitions. [2020-10-14 08:28:33,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:28:33,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-14 08:28:33,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:33,116 INFO L225 Difference]: With dead ends: 12643 [2020-10-14 08:28:33,117 INFO L226 Difference]: Without dead ends: 8481 [2020-10-14 08:28:33,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:28:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8481 states. [2020-10-14 08:28:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8481 to 8464. [2020-10-14 08:28:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8464 states. [2020-10-14 08:28:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 12920 transitions. [2020-10-14 08:28:33,584 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 12920 transitions. Word has length 239 [2020-10-14 08:28:33,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:33,585 INFO L479 AbstractCegarLoop]: Abstraction has 8464 states and 12920 transitions. [2020-10-14 08:28:33,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:28:33,585 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 12920 transitions. [2020-10-14 08:28:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 08:28:33,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:33,603 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 08:28:33,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:28:33,604 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:33,604 INFO L82 PathProgramCache]: Analyzing trace with hash -177698038, now seen corresponding path program 1 times [2020-10-14 08:28:33,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:33,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372347309] [2020-10-14 08:28:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:33,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:33,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:38,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:38,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 08:28:38,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:28:38,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 08:28:38,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:38,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 08:28:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 08:28:38,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:39,173 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:28:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:39,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:39,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:39,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:28:39,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:39,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:39,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:39,240 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 08:28:39,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372347309] [2020-10-14 08:28:39,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:39,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:39,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690088187] [2020-10-14 08:28:39,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:39,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:39,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:39,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:39,243 INFO L87 Difference]: Start difference. First operand 8464 states and 12920 transitions. Second operand 4 states. [2020-10-14 08:28:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:43,337 INFO L93 Difference]: Finished difference Result 24869 states and 37876 transitions. [2020-10-14 08:28:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:43,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 08:28:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:43,374 INFO L225 Difference]: With dead ends: 24869 [2020-10-14 08:28:43,374 INFO L226 Difference]: Without dead ends: 16474 [2020-10-14 08:28:43,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16474 states. [2020-10-14 08:28:43,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16474 to 8420. [2020-10-14 08:28:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8420 states. [2020-10-14 08:28:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8420 states to 8420 states and 12835 transitions. [2020-10-14 08:28:43,953 INFO L78 Accepts]: Start accepts. Automaton has 8420 states and 12835 transitions. Word has length 240 [2020-10-14 08:28:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:43,953 INFO L479 AbstractCegarLoop]: Abstraction has 8420 states and 12835 transitions. [2020-10-14 08:28:43,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 8420 states and 12835 transitions. [2020-10-14 08:28:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 08:28:43,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:43,968 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 08:28:43,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:28:43,969 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:43,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2091545849, now seen corresponding path program 1 times [2020-10-14 08:28:43,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:43,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876659483] [2020-10-14 08:28:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:44,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:49,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:49,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 08:28:49,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:28:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:28:49,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:49,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:28:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 08:28:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:49,571 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:28:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:49,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:49,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:49,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:49,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:49,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:28:49,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:49,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:49,666 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 08:28:49,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876659483] [2020-10-14 08:28:49,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:49,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:49,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227991544] [2020-10-14 08:28:49,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:49,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:49,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:49,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:49,669 INFO L87 Difference]: Start difference. First operand 8420 states and 12835 transitions. Second operand 4 states. [2020-10-14 08:28:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:56,845 INFO L93 Difference]: Finished difference Result 24551 states and 37352 transitions. [2020-10-14 08:28:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:56,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-10-14 08:28:56,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:56,885 INFO L225 Difference]: With dead ends: 24551 [2020-10-14 08:28:56,885 INFO L226 Difference]: Without dead ends: 16461 [2020-10-14 08:28:56,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:56,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16461 states. [2020-10-14 08:28:57,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16461 to 16448. [2020-10-14 08:28:57,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16448 states. [2020-10-14 08:28:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16448 states to 16448 states and 24924 transitions. [2020-10-14 08:28:57,862 INFO L78 Accepts]: Start accepts. Automaton has 16448 states and 24924 transitions. Word has length 241 [2020-10-14 08:28:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:57,863 INFO L479 AbstractCegarLoop]: Abstraction has 16448 states and 24924 transitions. [2020-10-14 08:28:57,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 16448 states and 24924 transitions. [2020-10-14 08:28:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 08:28:57,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:57,885 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 08:28:57,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:28:57,885 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:57,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1051926276, now seen corresponding path program 1 times [2020-10-14 08:28:57,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:57,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241808241] [2020-10-14 08:28:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:58,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:58,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:58,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:58,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:59,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:59,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:59,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:03,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 08:29:03,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:29:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 08:29:03,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:03,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:29:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:29:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 08:29:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:03,599 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:29:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:03,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:03,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:03,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:29:03,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:03,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:03,693 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 08:29:03,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241808241] [2020-10-14 08:29:03,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:03,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:29:03,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721852191] [2020-10-14 08:29:03,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:29:03,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:03,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:29:03,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:29:03,695 INFO L87 Difference]: Start difference. First operand 16448 states and 24924 transitions. Second operand 5 states. [2020-10-14 08:29:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:11,063 INFO L93 Difference]: Finished difference Result 48264 states and 72998 transitions. [2020-10-14 08:29:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:11,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-14 08:29:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:11,113 INFO L225 Difference]: With dead ends: 48264 [2020-10-14 08:29:11,113 INFO L226 Difference]: Without dead ends: 32106 [2020-10-14 08:29:11,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:29:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32106 states. [2020-10-14 08:29:12,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32106 to 31924. [2020-10-14 08:29:12,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31924 states. [2020-10-14 08:29:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31924 states to 31924 states and 47948 transitions. [2020-10-14 08:29:12,875 INFO L78 Accepts]: Start accepts. Automaton has 31924 states and 47948 transitions. Word has length 241 [2020-10-14 08:29:12,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:12,876 INFO L479 AbstractCegarLoop]: Abstraction has 31924 states and 47948 transitions. [2020-10-14 08:29:12,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:29:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 31924 states and 47948 transitions. [2020-10-14 08:29:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 08:29:12,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:12,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:12,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:29:12,911 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:12,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1393433299, now seen corresponding path program 1 times [2020-10-14 08:29:12,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:12,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211052843] [2020-10-14 08:29:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:13,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:14,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:17,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:17,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 08:29:17,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:29:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:29:17,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:17,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:29:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 08:29:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:18,549 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:29:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:18,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:18,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:18,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:29:18,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:18,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:18,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:18,646 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 08:29:18,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211052843] [2020-10-14 08:29:18,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:18,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:18,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689612480] [2020-10-14 08:29:18,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:18,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:18,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:18,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:18,649 INFO L87 Difference]: Start difference. First operand 31924 states and 47948 transitions. Second operand 4 states. [2020-10-14 08:29:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:28,235 INFO L93 Difference]: Finished difference Result 92749 states and 138803 transitions. [2020-10-14 08:29:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:29:28,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 243 [2020-10-14 08:29:28,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:28,327 INFO L225 Difference]: With dead ends: 92749 [2020-10-14 08:29:28,327 INFO L226 Difference]: Without dead ends: 62615 [2020-10-14 08:29:28,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62615 states. [2020-10-14 08:29:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62615 to 62433. [2020-10-14 08:29:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62433 states. [2020-10-14 08:29:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62433 states to 62433 states and 93079 transitions. [2020-10-14 08:29:33,015 INFO L78 Accepts]: Start accepts. Automaton has 62433 states and 93079 transitions. Word has length 243 [2020-10-14 08:29:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:33,015 INFO L479 AbstractCegarLoop]: Abstraction has 62433 states and 93079 transitions. [2020-10-14 08:29:33,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 62433 states and 93079 transitions. [2020-10-14 08:29:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 08:29:33,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:33,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:33,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:29:33,058 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:33,059 INFO L82 PathProgramCache]: Analyzing trace with hash 119194606, now seen corresponding path program 1 times [2020-10-14 08:29:33,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:33,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943603986] [2020-10-14 08:29:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:38,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 08:29:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:29:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:29:38,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:38,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:29:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:29:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:38,605 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:29:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:38,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:38,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:38,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:38,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:29:38,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:38,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:38,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943603986] [2020-10-14 08:29:38,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:38,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:38,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545885019] [2020-10-14 08:29:38,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:38,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:38,922 INFO L87 Difference]: Start difference. First operand 62433 states and 93079 transitions. Second operand 4 states. [2020-10-14 08:29:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:52,133 INFO L93 Difference]: Finished difference Result 185686 states and 276519 transitions. [2020-10-14 08:29:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:29:52,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 243 [2020-10-14 08:29:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:52,297 INFO L225 Difference]: With dead ends: 185686 [2020-10-14 08:29:52,297 INFO L226 Difference]: Without dead ends: 124029 [2020-10-14 08:29:52,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124029 states. [2020-10-14 08:29:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124029 to 62671. [2020-10-14 08:29:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62671 states. [2020-10-14 08:29:59,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62671 states to 62671 states and 93368 transitions. [2020-10-14 08:29:59,070 INFO L78 Accepts]: Start accepts. Automaton has 62671 states and 93368 transitions. Word has length 243 [2020-10-14 08:29:59,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:59,070 INFO L479 AbstractCegarLoop]: Abstraction has 62671 states and 93368 transitions. [2020-10-14 08:29:59,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:59,070 INFO L276 IsEmpty]: Start isEmpty. Operand 62671 states and 93368 transitions. [2020-10-14 08:29:59,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 08:29:59,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:59,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:59,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:29:59,124 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:59,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:59,125 INFO L82 PathProgramCache]: Analyzing trace with hash 576940954, now seen corresponding path program 1 times [2020-10-14 08:29:59,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:59,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849042309] [2020-10-14 08:29:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:59,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:59,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:59,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:00,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:01,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:04,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 08:30:04,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:30:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 08:30:04,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:04,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 08:30:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:30:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:04,845 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:30:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:04,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:04,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:04,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:30:04,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:04,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:04,904 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 08:30:04,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849042309] [2020-10-14 08:30:04,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:04,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:04,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065063010] [2020-10-14 08:30:04,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:04,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:04,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:04,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:04,906 INFO L87 Difference]: Start difference. First operand 62671 states and 93368 transitions. Second operand 4 states. [2020-10-14 08:30:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:18,774 INFO L93 Difference]: Finished difference Result 186165 states and 277170 transitions. [2020-10-14 08:30:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:18,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2020-10-14 08:30:18,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:20,883 INFO L225 Difference]: With dead ends: 186165 [2020-10-14 08:30:20,883 INFO L226 Difference]: Without dead ends: 124534 [2020-10-14 08:30:20,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124534 states. [2020-10-14 08:30:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124534 to 62999. [2020-10-14 08:30:24,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62999 states. [2020-10-14 08:30:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62999 states to 62999 states and 93822 transitions. [2020-10-14 08:30:24,871 INFO L78 Accepts]: Start accepts. Automaton has 62999 states and 93822 transitions. Word has length 244 [2020-10-14 08:30:24,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:24,871 INFO L479 AbstractCegarLoop]: Abstraction has 62999 states and 93822 transitions. [2020-10-14 08:30:24,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 62999 states and 93822 transitions. [2020-10-14 08:30:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 08:30:24,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:24,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:24,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:30:24,917 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:24,917 INFO L82 PathProgramCache]: Analyzing trace with hash 126878427, now seen corresponding path program 1 times [2020-10-14 08:30:24,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:24,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032568223] [2020-10-14 08:30:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:25,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:25,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:25,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:30,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:30,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 08:30:30,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:30:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5665 [2020-10-14 08:30:30,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:30,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:30:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:30:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 08:30:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:31,319 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 08:30:31,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:31,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:31,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:30:31,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:31,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:31,427 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 08:30:31,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032568223] [2020-10-14 08:30:31,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:31,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:30:31,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99758383] [2020-10-14 08:30:31,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:30:31,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:31,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:30:31,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:30:31,429 INFO L87 Difference]: Start difference. First operand 62999 states and 93822 transitions. Second operand 5 states. [2020-10-14 08:30:45,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:45,786 INFO L93 Difference]: Finished difference Result 181493 states and 269186 transitions. [2020-10-14 08:30:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:45,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-14 08:30:45,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:45,922 INFO L225 Difference]: With dead ends: 181493 [2020-10-14 08:30:45,922 INFO L226 Difference]: Without dead ends: 121454 [2020-10-14 08:30:45,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:30:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121454 states.