/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:01:42,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:01:42,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:01:42,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:01:42,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:01:42,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:01:42,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:01:42,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:01:42,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:01:42,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:01:42,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:01:42,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:01:42,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:01:42,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:01:42,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:01:42,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:01:42,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:01:42,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:01:42,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:01:42,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:01:42,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:01:42,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:01:42,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:01:42,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:01:42,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:01:42,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:01:42,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:01:42,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:01:42,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:01:42,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:01:42,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:01:42,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:01:42,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:01:42,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:01:42,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:01:42,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:01:42,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:01:42,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:01:42,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:01:42,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:01:42,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:01:42,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:01:42,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:01:42,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:01:42,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:01:42,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:01:42,378 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:01:42,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:01:42,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:01:42,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:01:42,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:01:42,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:01:42,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:01:42,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:01:42,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:01:42,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:01:42,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:01:42,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:01:42,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:01:42,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:01:42,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:01:42,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:01:42,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:01:42,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:01:42,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:01:42,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:01:42,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:01:42,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:01:42,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:01:42,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:01:42,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:01:42,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:01:42,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:01:42,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:01:42,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:01:42,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:01:42,674 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:01:42,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:01:42,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b00d4e522/8188863b203d4336b5d3aa0c730576e0/FLAGc24073de7 [2020-10-15 04:01:43,230 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:01:43,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:01:43,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b00d4e522/8188863b203d4336b5d3aa0c730576e0/FLAGc24073de7 [2020-10-15 04:01:43,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b00d4e522/8188863b203d4336b5d3aa0c730576e0 [2020-10-15 04:01:43,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:01:43,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:01:43,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:01:43,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:01:43,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:01:43,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:01:43" (1/1) ... [2020-10-15 04:01:43,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c454e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:43, skipping insertion in model container [2020-10-15 04:01:43,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:01:43" (1/1) ... [2020-10-15 04:01:43,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:01:43,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:01:43,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:01:43,954 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:01:44,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:01:44,139 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:01:44,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44 WrapperNode [2020-10-15 04:01:44,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:01:44,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:01:44,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:01:44,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:01:44,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44" (1/1) ... [2020-10-15 04:01:44,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44" (1/1) ... [2020-10-15 04:01:44,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44" (1/1) ... [2020-10-15 04:01:44,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44" (1/1) ... [2020-10-15 04:01:44,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44" (1/1) ... [2020-10-15 04:01:44,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44" (1/1) ... [2020-10-15 04:01:44,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44" (1/1) ... [2020-10-15 04:01:44,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:01:44,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:01:44,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:01:44,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:01:44,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:01:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:01:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:01:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:01:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:01:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:01:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:01:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:01:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:01:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:01:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:01:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:01:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:01:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:01:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:01:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:01:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:01:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:01:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:01:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:01:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:01:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:01:45,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:01:45,030 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:01:45,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:01:45 BoogieIcfgContainer [2020-10-15 04:01:45,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:01:45,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:01:45,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:01:45,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:01:45,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:01:43" (1/3) ... [2020-10-15 04:01:45,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d74cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:01:45, skipping insertion in model container [2020-10-15 04:01:45,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:44" (2/3) ... [2020-10-15 04:01:45,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d74cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:01:45, skipping insertion in model container [2020-10-15 04:01:45,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:01:45" (3/3) ... [2020-10-15 04:01:45,043 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:01:45,054 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:01:45,062 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:01:45,076 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:01:45,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:01:45,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:01:45,101 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:01:45,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:01:45,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:01:45,102 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:01:45,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:01:45,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:01:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-10-15 04:01:45,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 04:01:45,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:45,139 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] [2020-10-15 04:01:45,139 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1725986399, now seen corresponding path program 1 times [2020-10-15 04:01:45,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:45,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196474134] [2020-10-15 04:01:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:45,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:46,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:47,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:47,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:01:47,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:01:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2023 [2020-10-15 04:01:47,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:47,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:01:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 04:01:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:01:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:01:47,798 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:01:47,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:47,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:47,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:47,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:47,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 04:01:47,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:47,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:47,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:47,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:47,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:47,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:01:47,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196474134] [2020-10-15 04:01:47,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:47,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:01:47,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46971985] [2020-10-15 04:01:47,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:01:47,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:47,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:01:47,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:01:47,877 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2020-10-15 04:01:48,166 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:01:48,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:48,931 INFO L93 Difference]: Finished difference Result 348 states and 578 transitions. [2020-10-15 04:01:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:01:48,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 04:01:48,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:48,948 INFO L225 Difference]: With dead ends: 348 [2020-10-15 04:01:48,948 INFO L226 Difference]: Without dead ends: 241 [2020-10-15 04:01:48,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:01:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-15 04:01:49,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 238. [2020-10-15 04:01:49,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-15 04:01:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 369 transitions. [2020-10-15 04:01:49,019 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 369 transitions. Word has length 66 [2020-10-15 04:01:49,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:49,020 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 369 transitions. [2020-10-15 04:01:49,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:01:49,020 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 369 transitions. [2020-10-15 04:01:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 04:01:49,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:49,027 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] [2020-10-15 04:01:49,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:01:49,027 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:49,028 INFO L82 PathProgramCache]: Analyzing trace with hash 166652608, now seen corresponding path program 1 times [2020-10-15 04:01:49,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:49,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706284550] [2020-10-15 04:01:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:53,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:53,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 04:01:53,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:01:53,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4188 [2020-10-15 04:01:53,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:53,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:01:53,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:01:53,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:01:53,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:53,537 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:01:53,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:53,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:53,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:53,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:01:53,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:53,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:53,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:01:53,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706284550] [2020-10-15 04:01:53,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:53,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:01:53,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764561743] [2020-10-15 04:01:53,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:01:53,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:53,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:01:53,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:01:53,608 INFO L87 Difference]: Start difference. First operand 238 states and 369 transitions. Second operand 5 states. [2020-10-15 04:01:54,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:54,803 INFO L93 Difference]: Finished difference Result 663 states and 1026 transitions. [2020-10-15 04:01:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:01:54,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-15 04:01:54,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:54,810 INFO L225 Difference]: With dead ends: 663 [2020-10-15 04:01:54,810 INFO L226 Difference]: Without dead ends: 454 [2020-10-15 04:01:54,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:01:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-15 04:01:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 452. [2020-10-15 04:01:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-10-15 04:01:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 698 transitions. [2020-10-15 04:01:54,884 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 698 transitions. Word has length 68 [2020-10-15 04:01:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:54,885 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 698 transitions. [2020-10-15 04:01:54,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:01:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 698 transitions. [2020-10-15 04:01:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:01:54,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:54,895 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] [2020-10-15 04:01:54,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:01:54,895 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:54,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1232335638, now seen corresponding path program 1 times [2020-10-15 04:01:54,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:54,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308792771] [2020-10-15 04:01:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:54,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:58,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:58,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:01:58,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:01:58,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3286 [2020-10-15 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:01:58,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:58,424 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:01:58,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:58,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:58,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:58,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:01:58,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:58,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:58,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:01:58,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308792771] [2020-10-15 04:01:58,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:58,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:01:58,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312326044] [2020-10-15 04:01:58,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:01:58,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:58,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:01:58,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:01:58,460 INFO L87 Difference]: Start difference. First operand 452 states and 698 transitions. Second operand 5 states. [2020-10-15 04:01:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:59,295 INFO L93 Difference]: Finished difference Result 1304 states and 2013 transitions. [2020-10-15 04:01:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:01:59,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:01:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:59,301 INFO L225 Difference]: With dead ends: 1304 [2020-10-15 04:01:59,301 INFO L226 Difference]: Without dead ends: 866 [2020-10-15 04:01:59,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:01:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-15 04:01:59,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 864. [2020-10-15 04:01:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-15 04:01:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1323 transitions. [2020-10-15 04:01:59,367 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1323 transitions. Word has length 69 [2020-10-15 04:01:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:59,367 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1323 transitions. [2020-10-15 04:01:59,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:01:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1323 transitions. [2020-10-15 04:01:59,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:01:59,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:59,371 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] [2020-10-15 04:01:59,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:01:59,371 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:59,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:59,372 INFO L82 PathProgramCache]: Analyzing trace with hash -250993752, now seen corresponding path program 1 times [2020-10-15 04:01:59,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:59,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120889402] [2020-10-15 04:01:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:59,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:59,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:00,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:04,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:02:04,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:02:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 04:02:04,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:04,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:02:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 04:02:04,684 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:04,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:04,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:04,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:04,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:04,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:02:04,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:04,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:04,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:04,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120889402] [2020-10-15 04:02:04,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:04,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:04,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566585888] [2020-10-15 04:02:04,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:04,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:04,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:04,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:04,722 INFO L87 Difference]: Start difference. First operand 864 states and 1323 transitions. Second operand 5 states. [2020-10-15 04:02:04,957 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:02:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:05,819 INFO L93 Difference]: Finished difference Result 1294 states and 1975 transitions. [2020-10-15 04:02:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:02:05,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 04:02:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:05,824 INFO L225 Difference]: With dead ends: 1294 [2020-10-15 04:02:05,824 INFO L226 Difference]: Without dead ends: 866 [2020-10-15 04:02:05,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:02:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-15 04:02:05,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 864. [2020-10-15 04:02:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-15 04:02:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1312 transitions. [2020-10-15 04:02:05,883 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1312 transitions. Word has length 70 [2020-10-15 04:02:05,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:05,884 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1312 transitions. [2020-10-15 04:02:05,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:05,884 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1312 transitions. [2020-10-15 04:02:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:02:05,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:05,887 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] [2020-10-15 04:02:05,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:02:05,887 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:05,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1984453697, now seen corresponding path program 1 times [2020-10-15 04:02:05,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:05,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969288255] [2020-10-15 04:02:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:06,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:06,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:09,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:09,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:02:09,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:02:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3511 [2020-10-15 04:02:09,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:09,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:02:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:02:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:02:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:09,641 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:09,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:09,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:09,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:09,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:02:09,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:09,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:09,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:09,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:09,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:09,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969288255] [2020-10-15 04:02:09,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:09,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:02:09,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856895127] [2020-10-15 04:02:09,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:02:09,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:09,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:02:09,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:02:09,672 INFO L87 Difference]: Start difference. First operand 864 states and 1312 transitions. Second operand 4 states. [2020-10-15 04:02:09,854 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:02:10,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:10,592 INFO L93 Difference]: Finished difference Result 2112 states and 3322 transitions. [2020-10-15 04:02:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:10,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-15 04:02:10,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:10,600 INFO L225 Difference]: With dead ends: 2112 [2020-10-15 04:02:10,600 INFO L226 Difference]: Without dead ends: 1458 [2020-10-15 04:02:10,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:10,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-10-15 04:02:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1448. [2020-10-15 04:02:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-10-15 04:02:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2244 transitions. [2020-10-15 04:02:10,714 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2244 transitions. Word has length 70 [2020-10-15 04:02:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:10,718 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 2244 transitions. [2020-10-15 04:02:10,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:02:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2244 transitions. [2020-10-15 04:02:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 04:02:10,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:10,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:02:10,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:02:10,724 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:10,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:10,724 INFO L82 PathProgramCache]: Analyzing trace with hash -693462430, now seen corresponding path program 1 times [2020-10-15 04:02:10,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:10,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829608809] [2020-10-15 04:02:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:10,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:11,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:11,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:15,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:15,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:02:15,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:15,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:02:15,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:15,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 04:02:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-15 04:02:16,153 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:16,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:16,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:02:16,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:16,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:16,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:16,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:16,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829608809] [2020-10-15 04:02:16,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:16,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:16,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277068652] [2020-10-15 04:02:16,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:16,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:16,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:16,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:16,218 INFO L87 Difference]: Start difference. First operand 1448 states and 2244 transitions. Second operand 5 states. [2020-10-15 04:02:17,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:17,241 INFO L93 Difference]: Finished difference Result 3985 states and 6228 transitions. [2020-10-15 04:02:17,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:17,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 04:02:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:17,257 INFO L225 Difference]: With dead ends: 3985 [2020-10-15 04:02:17,257 INFO L226 Difference]: Without dead ends: 2747 [2020-10-15 04:02:17,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2020-10-15 04:02:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2745. [2020-10-15 04:02:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2745 states. [2020-10-15 04:02:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4210 transitions. [2020-10-15 04:02:17,509 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4210 transitions. Word has length 72 [2020-10-15 04:02:17,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:17,511 INFO L479 AbstractCegarLoop]: Abstraction has 2745 states and 4210 transitions. [2020-10-15 04:02:17,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4210 transitions. [2020-10-15 04:02:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:02:17,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:17,521 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] [2020-10-15 04:02:17,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:02:17,522 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:17,522 INFO L82 PathProgramCache]: Analyzing trace with hash 457469818, now seen corresponding path program 1 times [2020-10-15 04:02:17,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:17,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049063527] [2020-10-15 04:02:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:17,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:17,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:17,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:18,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:22,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:22,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 04:02:22,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:02:22,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:22,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:02:22,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:22,841 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:22,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:22,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:22,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:02:22,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:22,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:22,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:22,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049063527] [2020-10-15 04:02:22,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:22,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:22,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763029026] [2020-10-15 04:02:22,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:22,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:22,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:22,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:22,903 INFO L87 Difference]: Start difference. First operand 2745 states and 4210 transitions. Second operand 5 states. [2020-10-15 04:02:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:24,259 INFO L93 Difference]: Finished difference Result 7644 states and 11835 transitions. [2020-10-15 04:02:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:24,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:02:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:24,284 INFO L225 Difference]: With dead ends: 7644 [2020-10-15 04:02:24,285 INFO L226 Difference]: Without dead ends: 5266 [2020-10-15 04:02:24,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2020-10-15 04:02:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 5264. [2020-10-15 04:02:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5264 states. [2020-10-15 04:02:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 8009 transitions. [2020-10-15 04:02:24,728 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 8009 transitions. Word has length 73 [2020-10-15 04:02:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:24,729 INFO L479 AbstractCegarLoop]: Abstraction has 5264 states and 8009 transitions. [2020-10-15 04:02:24,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 8009 transitions. [2020-10-15 04:02:24,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:02:24,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:24,736 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] [2020-10-15 04:02:24,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:02:24,736 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:24,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:24,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1189010898, now seen corresponding path program 1 times [2020-10-15 04:02:24,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:24,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76932833] [2020-10-15 04:02:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:25,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:26,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:29,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:29,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:02:29,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:02:29,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:02:29,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:29,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:02:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:30,014 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:30,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:30,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:30,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:30,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:30,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:30,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:02:30,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:30,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:30,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:30,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:30,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76932833] [2020-10-15 04:02:30,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:30,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:30,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029778587] [2020-10-15 04:02:30,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:30,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:30,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:30,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:30,049 INFO L87 Difference]: Start difference. First operand 5264 states and 8009 transitions. Second operand 5 states. [2020-10-15 04:02:30,256 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:02:31,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:31,823 INFO L93 Difference]: Finished difference Result 9911 states and 14966 transitions. [2020-10-15 04:02:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:02:31,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-15 04:02:31,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:31,856 INFO L225 Difference]: With dead ends: 9911 [2020-10-15 04:02:31,856 INFO L226 Difference]: Without dead ends: 6956 [2020-10-15 04:02:31,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:02:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2020-10-15 04:02:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 6954. [2020-10-15 04:02:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6954 states. [2020-10-15 04:02:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6954 states to 6954 states and 10384 transitions. [2020-10-15 04:02:32,435 INFO L78 Accepts]: Start accepts. Automaton has 6954 states and 10384 transitions. Word has length 74 [2020-10-15 04:02:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:32,436 INFO L479 AbstractCegarLoop]: Abstraction has 6954 states and 10384 transitions. [2020-10-15 04:02:32,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6954 states and 10384 transitions. [2020-10-15 04:02:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:02:32,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:32,445 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] [2020-10-15 04:02:32,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:02:32,445 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:32,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:32,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1329423587, now seen corresponding path program 1 times [2020-10-15 04:02:32,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:32,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91704076] [2020-10-15 04:02:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:32,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:32,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:37,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:37,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:02:37,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:02:37,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:37,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:02:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:02:37,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:02:37,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:37,714 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:37,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:37,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:02:37,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:37,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:37,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:37,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91704076] [2020-10-15 04:02:37,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:37,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:02:37,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51435955] [2020-10-15 04:02:37,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:02:37,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:37,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:02:37,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:02:37,746 INFO L87 Difference]: Start difference. First operand 6954 states and 10384 transitions. Second operand 4 states. [2020-10-15 04:02:37,984 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:02:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:39,208 INFO L93 Difference]: Finished difference Result 16682 states and 25574 transitions. [2020-10-15 04:02:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:39,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-15 04:02:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:39,254 INFO L225 Difference]: With dead ends: 16682 [2020-10-15 04:02:39,254 INFO L226 Difference]: Without dead ends: 11084 [2020-10-15 04:02:39,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11084 states. [2020-10-15 04:02:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11084 to 11018. [2020-10-15 04:02:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11018 states. [2020-10-15 04:02:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11018 states to 11018 states and 16640 transitions. [2020-10-15 04:02:40,063 INFO L78 Accepts]: Start accepts. Automaton has 11018 states and 16640 transitions. Word has length 74 [2020-10-15 04:02:40,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:40,063 INFO L479 AbstractCegarLoop]: Abstraction has 11018 states and 16640 transitions. [2020-10-15 04:02:40,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:02:40,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11018 states and 16640 transitions. [2020-10-15 04:02:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 04:02:40,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:40,074 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] [2020-10-15 04:02:40,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:02:40,074 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1133817988, now seen corresponding path program 1 times [2020-10-15 04:02:40,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:40,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404497168] [2020-10-15 04:02:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:40,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:40,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:40,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:45,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:45,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 04:02:45,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:02:45,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:02:45,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:45,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 04:02:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:45,333 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:45,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:45,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:45,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:45,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:45,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:02:45,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:45,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:45,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:45,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404497168] [2020-10-15 04:02:45,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:45,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:45,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589945336] [2020-10-15 04:02:45,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:45,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:45,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:45,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:45,372 INFO L87 Difference]: Start difference. First operand 11018 states and 16640 transitions. Second operand 5 states. [2020-10-15 04:02:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:47,545 INFO L93 Difference]: Finished difference Result 31697 states and 47890 transitions. [2020-10-15 04:02:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:47,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-15 04:02:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:47,599 INFO L225 Difference]: With dead ends: 31697 [2020-10-15 04:02:47,599 INFO L226 Difference]: Without dead ends: 21091 [2020-10-15 04:02:47,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21091 states. [2020-10-15 04:02:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21091 to 21089. [2020-10-15 04:02:49,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21089 states. [2020-10-15 04:02:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21089 states to 21089 states and 31494 transitions. [2020-10-15 04:02:49,402 INFO L78 Accepts]: Start accepts. Automaton has 21089 states and 31494 transitions. Word has length 76 [2020-10-15 04:02:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:49,403 INFO L479 AbstractCegarLoop]: Abstraction has 21089 states and 31494 transitions. [2020-10-15 04:02:49,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 21089 states and 31494 transitions. [2020-10-15 04:02:49,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 04:02:49,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:49,424 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] [2020-10-15 04:02:49,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:02:49,425 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:49,425 INFO L82 PathProgramCache]: Analyzing trace with hash 964346241, now seen corresponding path program 1 times [2020-10-15 04:02:49,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:49,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607127592] [2020-10-15 04:02:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:49,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:49,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:49,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:49,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:54,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 04:02:54,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:02:54,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:54,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:02:54,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:54,669 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:54,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:54,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:54,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:54,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:54,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:02:54,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:54,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:54,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607127592] [2020-10-15 04:02:54,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:54,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:54,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584166525] [2020-10-15 04:02:54,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:54,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:54,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:54,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:54,697 INFO L87 Difference]: Start difference. First operand 21089 states and 31494 transitions. Second operand 5 states. [2020-10-15 04:02:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:58,791 INFO L93 Difference]: Finished difference Result 58807 states and 88344 transitions. [2020-10-15 04:02:58,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:58,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-15 04:02:58,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:58,861 INFO L225 Difference]: With dead ends: 58807 [2020-10-15 04:02:58,861 INFO L226 Difference]: Without dead ends: 40277 [2020-10-15 04:02:58,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:58,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40277 states. [2020-10-15 04:03:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40277 to 40275. [2020-10-15 04:03:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40275 states. [2020-10-15 04:03:02,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40275 states to 40275 states and 59414 transitions. [2020-10-15 04:03:02,512 INFO L78 Accepts]: Start accepts. Automaton has 40275 states and 59414 transitions. Word has length 77 [2020-10-15 04:03:02,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:02,513 INFO L479 AbstractCegarLoop]: Abstraction has 40275 states and 59414 transitions. [2020-10-15 04:03:02,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:03:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 40275 states and 59414 transitions. [2020-10-15 04:03:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:03:02,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:02,565 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] [2020-10-15 04:03:02,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:03:02,565 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:02,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1293595050, now seen corresponding path program 1 times [2020-10-15 04:03:02,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:02,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326946325] [2020-10-15 04:03:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:02,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:07,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:07,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:03:07,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:03:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:03:07,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:07,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:03:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:03:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 04:03:07,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:07,970 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:03:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:07,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:07,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:07,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:03:07,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:07,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:03:07,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326946325] [2020-10-15 04:03:07,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:07,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:03:07,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545146621] [2020-10-15 04:03:07,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:03:07,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:07,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:03:07,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:07,997 INFO L87 Difference]: Start difference. First operand 40275 states and 59414 transitions. Second operand 5 states. [2020-10-15 04:03:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:10,507 INFO L93 Difference]: Finished difference Result 54597 states and 80542 transitions. [2020-10-15 04:03:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:03:10,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:03:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:10,540 INFO L225 Difference]: With dead ends: 54597 [2020-10-15 04:03:10,540 INFO L226 Difference]: Without dead ends: 26940 [2020-10-15 04:03:10,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:03:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26940 states. [2020-10-15 04:03:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26940 to 26940. [2020-10-15 04:03:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26940 states. [2020-10-15 04:03:12,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26940 states to 26940 states and 39669 transitions. [2020-10-15 04:03:12,811 INFO L78 Accepts]: Start accepts. Automaton has 26940 states and 39669 transitions. Word has length 78 [2020-10-15 04:03:12,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:12,811 INFO L479 AbstractCegarLoop]: Abstraction has 26940 states and 39669 transitions. [2020-10-15 04:03:12,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:03:12,811 INFO L276 IsEmpty]: Start isEmpty. Operand 26940 states and 39669 transitions. [2020-10-15 04:03:12,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:03:12,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:12,829 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] [2020-10-15 04:03:12,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:03:12,830 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:12,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:12,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1175627992, now seen corresponding path program 1 times [2020-10-15 04:03:12,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:12,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822831480] [2020-10-15 04:03:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:12,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:14,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:17,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:17,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:03:17,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:03:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:03:17,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:17,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:03:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:03:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 04:03:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:03:18,052 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:03:18,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:18,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:18,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:18,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:03:18,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:18,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:03:18,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822831480] [2020-10-15 04:03:18,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:18,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:03:18,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997247968] [2020-10-15 04:03:18,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:03:18,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:18,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:03:18,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:18,079 INFO L87 Difference]: Start difference. First operand 26940 states and 39669 transitions. Second operand 5 states. [2020-10-15 04:03:18,273 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:03:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:21,263 INFO L93 Difference]: Finished difference Result 43118 states and 63125 transitions. [2020-10-15 04:03:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:03:21,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:03:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:21,297 INFO L225 Difference]: With dead ends: 43118 [2020-10-15 04:03:21,297 INFO L226 Difference]: Without dead ends: 28778 [2020-10-15 04:03:21,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:03:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28778 states. [2020-10-15 04:03:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28778 to 28776. [2020-10-15 04:03:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28776 states. [2020-10-15 04:03:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28776 states to 28776 states and 41807 transitions. [2020-10-15 04:03:23,489 INFO L78 Accepts]: Start accepts. Automaton has 28776 states and 41807 transitions. Word has length 78 [2020-10-15 04:03:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:23,489 INFO L479 AbstractCegarLoop]: Abstraction has 28776 states and 41807 transitions. [2020-10-15 04:03:23,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:03:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 28776 states and 41807 transitions. [2020-10-15 04:03:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:03:23,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:23,503 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] [2020-10-15 04:03:23,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:03:23,503 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:23,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:23,504 INFO L82 PathProgramCache]: Analyzing trace with hash 728407261, now seen corresponding path program 1 times [2020-10-15 04:03:23,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:23,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459481287] [2020-10-15 04:03:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:23,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:23,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:26,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:26,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:03:26,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:03:26,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3082 [2020-10-15 04:03:26,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:26,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:03:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:03:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:03:26,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:26,789 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:03:26,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:26,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:26,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:26,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:26,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:26,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:03:26,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:26,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:26,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:03:26,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459481287] [2020-10-15 04:03:26,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:26,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:03:26,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987616019] [2020-10-15 04:03:26,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:03:26,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:26,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:03:26,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:03:26,812 INFO L87 Difference]: Start difference. First operand 28776 states and 41807 transitions. Second operand 6 states. [2020-10-15 04:03:27,018 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 04:03:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:34,716 INFO L93 Difference]: Finished difference Result 117563 states and 177000 transitions. [2020-10-15 04:03:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:03:34,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-15 04:03:34,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:34,834 INFO L225 Difference]: With dead ends: 117563 [2020-10-15 04:03:34,834 INFO L226 Difference]: Without dead ends: 92805 [2020-10-15 04:03:34,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:03:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92805 states. [2020-10-15 04:03:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92805 to 51160. [2020-10-15 04:03:40,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51160 states. [2020-10-15 04:03:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51160 states to 51160 states and 75137 transitions. [2020-10-15 04:03:40,407 INFO L78 Accepts]: Start accepts. Automaton has 51160 states and 75137 transitions. Word has length 78 [2020-10-15 04:03:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:40,407 INFO L479 AbstractCegarLoop]: Abstraction has 51160 states and 75137 transitions. [2020-10-15 04:03:40,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:03:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 51160 states and 75137 transitions. [2020-10-15 04:03:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 04:03:40,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:40,425 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] [2020-10-15 04:03:40,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:03:40,426 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:40,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:40,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1044178174, now seen corresponding path program 1 times [2020-10-15 04:03:40,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:40,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263389373] [2020-10-15 04:03:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:40,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:41,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:41,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:45,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:45,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 04:03:45,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:03:45,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:03:45,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:45,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:03:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:03:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:03:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:45,622 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:03:45,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:45,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:45,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:45,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:45,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:03:45,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:45,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:45,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:03:45,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263389373] [2020-10-15 04:03:45,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:45,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:03:45,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958383349] [2020-10-15 04:03:45,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:03:45,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:45,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:03:45,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:45,647 INFO L87 Difference]: Start difference. First operand 51160 states and 75137 transitions. Second operand 5 states. [2020-10-15 04:03:45,838 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:03:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:55,425 INFO L93 Difference]: Finished difference Result 143866 states and 215868 transitions. [2020-10-15 04:03:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:03:55,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-15 04:03:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:55,551 INFO L225 Difference]: With dead ends: 143866 [2020-10-15 04:03:55,552 INFO L226 Difference]: Without dead ends: 97084 [2020-10-15 04:03:55,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:03:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97084 states. [2020-10-15 04:04:02,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97084 to 73972. [2020-10-15 04:04:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73972 states. [2020-10-15 04:04:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73972 states to 73972 states and 109305 transitions. [2020-10-15 04:04:02,271 INFO L78 Accepts]: Start accepts. Automaton has 73972 states and 109305 transitions. Word has length 79 [2020-10-15 04:04:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:02,271 INFO L479 AbstractCegarLoop]: Abstraction has 73972 states and 109305 transitions. [2020-10-15 04:04:02,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 73972 states and 109305 transitions. [2020-10-15 04:04:02,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:04:02,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:02,293 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] [2020-10-15 04:04:02,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:04:02,293 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:02,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:02,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2047267388, now seen corresponding path program 1 times [2020-10-15 04:04:02,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:02,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694198386] [2020-10-15 04:04:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:03,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:03,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:07,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:07,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:04:07,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:04:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 04:04:07,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:07,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 04:04:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:04:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:07,502 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:04:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:07,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:07,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:07,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:04:07,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:07,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:07,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694198386] [2020-10-15 04:04:07,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:07,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:07,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712241786] [2020-10-15 04:04:07,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:07,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:07,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:07,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:07,532 INFO L87 Difference]: Start difference. First operand 73972 states and 109305 transitions. Second operand 5 states. [2020-10-15 04:04:07,730 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:04:20,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:20,023 INFO L93 Difference]: Finished difference Result 204344 states and 305438 transitions. [2020-10-15 04:04:20,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:04:20,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-15 04:04:20,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:20,216 INFO L225 Difference]: With dead ends: 204344 [2020-10-15 04:04:20,216 INFO L226 Difference]: Without dead ends: 135110 [2020-10-15 04:04:20,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:04:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135110 states. [2020-10-15 04:04:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135110 to 104101. [2020-10-15 04:04:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104101 states. [2020-10-15 04:04:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104101 states to 104101 states and 153592 transitions. [2020-10-15 04:04:32,559 INFO L78 Accepts]: Start accepts. Automaton has 104101 states and 153592 transitions. Word has length 80 [2020-10-15 04:04:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:32,559 INFO L479 AbstractCegarLoop]: Abstraction has 104101 states and 153592 transitions. [2020-10-15 04:04:32,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 104101 states and 153592 transitions. [2020-10-15 04:04:32,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:04:32,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:32,586 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] [2020-10-15 04:04:32,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:04:32,587 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:32,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:32,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1501326989, now seen corresponding path program 1 times [2020-10-15 04:04:32,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:32,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429664854] [2020-10-15 04:04:32,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:32,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:35,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:37,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:37,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:04:37,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:04:37,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:04:37,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:37,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:04:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 04:04:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:04:37,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:37,807 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:04:37,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:37,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:37,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:37,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:04:37,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:37,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:37,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429664854] [2020-10-15 04:04:37,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:37,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:04:37,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298504051] [2020-10-15 04:04:37,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:04:37,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:37,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:04:37,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:04:37,833 INFO L87 Difference]: Start difference. First operand 104101 states and 153592 transitions. Second operand 6 states. [2020-10-15 04:04:38,041 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 04:05:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:01,496 INFO L93 Difference]: Finished difference Result 321789 states and 476819 transitions. [2020-10-15 04:05:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:05:01,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-15 04:05:01,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:01,847 INFO L225 Difference]: With dead ends: 321789 [2020-10-15 04:05:01,847 INFO L226 Difference]: Without dead ends: 232481 [2020-10-15 04:05:01,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:05:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232481 states. [2020-10-15 04:05:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232481 to 186839. [2020-10-15 04:05:23,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186839 states. [2020-10-15 04:05:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186839 states to 186839 states and 275998 transitions. [2020-10-15 04:05:23,795 INFO L78 Accepts]: Start accepts. Automaton has 186839 states and 275998 transitions. Word has length 80 [2020-10-15 04:05:23,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:23,795 INFO L479 AbstractCegarLoop]: Abstraction has 186839 states and 275998 transitions. [2020-10-15 04:05:23,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:05:23,795 INFO L276 IsEmpty]: Start isEmpty. Operand 186839 states and 275998 transitions. [2020-10-15 04:05:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:05:23,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:23,826 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] [2020-10-15 04:05:23,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:05:23,826 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:23,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1792195846, now seen corresponding path program 1 times [2020-10-15 04:05:23,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:23,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439369079] [2020-10-15 04:05:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:23,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:23,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:23,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:24,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:28,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:28,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:05:28,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:05:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:05:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:28,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:05:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 04:05:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:29,052 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:29,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:29,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:29,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:05:29,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:29,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:29,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:29,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439369079] [2020-10-15 04:05:29,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:29,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:29,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394150843] [2020-10-15 04:05:29,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:29,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:29,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:29,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:29,076 INFO L87 Difference]: Start difference. First operand 186839 states and 275998 transitions. Second operand 5 states. [2020-10-15 04:05:29,525 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 172