/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.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:01:29,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:01:29,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:01:29,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:01:29,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:01:29,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:01:29,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:01:29,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:01:29,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:01:29,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:01:29,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:01:29,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:01:29,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:01:29,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:01:29,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:01:29,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:01:29,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:01:29,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:01:29,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:01:29,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:01:29,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:01:29,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:01:29,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:01:29,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:01:29,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:01:29,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:01:29,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:01:29,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:01:29,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:01:29,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:01:29,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:01:29,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:01:29,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:01:29,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:01:29,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:01:29,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:01:29,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:01:29,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:01:29,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:01:29,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:01:29,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:01:29,318 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 04:01:29,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:01:29,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:01:29,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:01:29,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:01:29,343 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:01:29,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:01:29,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:01:29,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:01:29,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:01:29,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:01:29,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:01:29,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:01:29,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:01:29,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:01:29,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:01:29,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:01:29,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:01:29,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:01:29,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:01:29,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:01:29,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:01:29,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:01:29,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:01:29,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:01:29,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:01:29,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:01:29,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:01:29,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:01:29,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:01:29,354 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 04:01:29,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:01:29,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:01:29,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:01:29,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:01:29,713 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:01:29,714 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 04:01:29,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/301f33914/9cf1d55f42004905960d10b6fd91aa4b/FLAGf00e526af [2020-10-15 04:01:30,261 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:01:30,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 04:01:30,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/301f33914/9cf1d55f42004905960d10b6fd91aa4b/FLAGf00e526af [2020-10-15 04:01:30,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/301f33914/9cf1d55f42004905960d10b6fd91aa4b [2020-10-15 04:01:30,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:01:30,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:01:30,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:01:30,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:01:30,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:01:30,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:01:30" (1/1) ... [2020-10-15 04:01:30,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:30, skipping insertion in model container [2020-10-15 04:01:30,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:01:30" (1/1) ... [2020-10-15 04:01:30,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:01:30,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:01:31,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:01:31,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:01:31,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:01:31,283 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:01:31,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31 WrapperNode [2020-10-15 04:01:31,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:01:31,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:01:31,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:01:31,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:01:31,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31" (1/1) ... [2020-10-15 04:01:31,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31" (1/1) ... [2020-10-15 04:01:31,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31" (1/1) ... [2020-10-15 04:01:31,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31" (1/1) ... [2020-10-15 04:01:31,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31" (1/1) ... [2020-10-15 04:01:31,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31" (1/1) ... [2020-10-15 04:01:31,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31" (1/1) ... [2020-10-15 04:01:31,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:01:31,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:01:31,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:01:31,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:01:31,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31" (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 04:01:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:01:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:01:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:01:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:01:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:01:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:01:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:01:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:01:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:01:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:01:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:01:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:01:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:01:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:01:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:01:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:01:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:01:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:01:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:01:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:01:32,295 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:01:32,295 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:01:32,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:01:32 BoogieIcfgContainer [2020-10-15 04:01:32,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:01:32,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:01:32,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:01:32,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:01:32,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:01:30" (1/3) ... [2020-10-15 04:01:32,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1888e7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:01:32, skipping insertion in model container [2020-10-15 04:01:32,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:31" (2/3) ... [2020-10-15 04:01:32,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1888e7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:01:32, skipping insertion in model container [2020-10-15 04:01:32,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:01:32" (3/3) ... [2020-10-15 04:01:32,317 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 04:01:32,329 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:01:32,346 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:01:32,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:01:32,396 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:01:32,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:01:32,397 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:01:32,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:01:32,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:01:32,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:01:32,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:01:32,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:01:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-15 04:01:32,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 04:01:32,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:32,433 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 04:01:32,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:32,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:32,441 INFO L82 PathProgramCache]: Analyzing trace with hash 653816526, now seen corresponding path program 1 times [2020-10-15 04:01:32,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:32,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718915192] [2020-10-15 04:01:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:32,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:33,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:33,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:34,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:34,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:01:34,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:01:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2146 [2020-10-15 04:01:34,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:34,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:01:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 04:01:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:01:34,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:01:35,465 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:01:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:35,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:35,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:35,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:35,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 04:01:35,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:35,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:35,564 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 04:01:35,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718915192] [2020-10-15 04:01:35,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:35,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:01:35,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964206508] [2020-10-15 04:01:35,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:01:35,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:35,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:01:35,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:01:35,605 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 4 states. [2020-10-15 04:01:35,907 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 04:01:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:36,727 INFO L93 Difference]: Finished difference Result 330 states and 554 transitions. [2020-10-15 04:01:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:01:36,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 04:01:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:36,744 INFO L225 Difference]: With dead ends: 330 [2020-10-15 04:01:36,744 INFO L226 Difference]: Without dead ends: 229 [2020-10-15 04:01:36,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:01:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-15 04:01:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2020-10-15 04:01:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-15 04:01:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 353 transitions. [2020-10-15 04:01:36,817 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 353 transitions. Word has length 66 [2020-10-15 04:01:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:36,818 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 353 transitions. [2020-10-15 04:01:36,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:01:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 353 transitions. [2020-10-15 04:01:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 04:01:36,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:36,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:01:36,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:01:36,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:36,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1237147599, now seen corresponding path program 1 times [2020-10-15 04:01:36,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:36,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474169584] [2020-10-15 04:01:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:41,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:41,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 04:01:41,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:01:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4395 [2020-10-15 04:01:41,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:41,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:01:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:01:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:01:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:41,578 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:01:41,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:41,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:41,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:41,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:41,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:01:41,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:41,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:41,624 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 04:01:41,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474169584] [2020-10-15 04:01:41,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:41,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:01:41,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281728636] [2020-10-15 04:01:41,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:01:41,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:41,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:01:41,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:01:41,629 INFO L87 Difference]: Start difference. First operand 227 states and 353 transitions. Second operand 5 states. [2020-10-15 04:01:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:42,725 INFO L93 Difference]: Finished difference Result 630 states and 978 transitions. [2020-10-15 04:01:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:01:42,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-15 04:01:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:42,736 INFO L225 Difference]: With dead ends: 630 [2020-10-15 04:01:42,736 INFO L226 Difference]: Without dead ends: 432 [2020-10-15 04:01:42,741 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 04:01:42,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-15 04:01:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2020-10-15 04:01:42,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-15 04:01:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 666 transitions. [2020-10-15 04:01:42,845 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 666 transitions. Word has length 68 [2020-10-15 04:01:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:42,845 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 666 transitions. [2020-10-15 04:01:42,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:01:42,845 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 666 transitions. [2020-10-15 04:01:42,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:01:42,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:42,850 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 04:01:42,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:01:42,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:42,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:42,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1425378005, now seen corresponding path program 1 times [2020-10-15 04:01:42,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:42,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112760593] [2020-10-15 04:01:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:42,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:42,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:43,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:46,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:46,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:01:46,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:01:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3352 [2020-10-15 04:01:46,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:46,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:01:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:01:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:01:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:46,475 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:01:46,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:46,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:46,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:46,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:46,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:01:46,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:46,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:46,514 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 04:01:46,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112760593] [2020-10-15 04:01:46,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:46,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:01:46,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941612037] [2020-10-15 04:01:46,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:01:46,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:46,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:01:46,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:01:46,518 INFO L87 Difference]: Start difference. First operand 430 states and 666 transitions. Second operand 5 states. [2020-10-15 04:01:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:47,492 INFO L93 Difference]: Finished difference Result 1238 states and 1917 transitions. [2020-10-15 04:01:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:01:47,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:01:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:47,504 INFO L225 Difference]: With dead ends: 1238 [2020-10-15 04:01:47,505 INFO L226 Difference]: Without dead ends: 822 [2020-10-15 04:01:47,515 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 04:01:47,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-15 04:01:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 820. [2020-10-15 04:01:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-15 04:01:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1259 transitions. [2020-10-15 04:01:47,605 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1259 transitions. Word has length 69 [2020-10-15 04:01:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:47,605 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 1259 transitions. [2020-10-15 04:01:47,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:01:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1259 transitions. [2020-10-15 04:01:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:01:47,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:47,620 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 04:01:47,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:01:47,620 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1226548802, now seen corresponding path program 1 times [2020-10-15 04:01:47,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:47,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615384025] [2020-10-15 04:01:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:47,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:49,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:52,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:52,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:01:52,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:01:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:01:52,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:52,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:01:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:01:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 04:01:52,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 04:01:53,085 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:01:53,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:53,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:53,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:53,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:53,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:53,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:01:53,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:53,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:53,136 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 04:01:53,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615384025] [2020-10-15 04:01:53,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:53,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:01:53,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124205475] [2020-10-15 04:01:53,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:01:53,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:53,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:01:53,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:01:53,141 INFO L87 Difference]: Start difference. First operand 820 states and 1259 transitions. Second operand 5 states. [2020-10-15 04:01:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:53,929 INFO L93 Difference]: Finished difference Result 2328 states and 3565 transitions. [2020-10-15 04:01:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:01:53,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:01:53,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:53,939 INFO L225 Difference]: With dead ends: 2328 [2020-10-15 04:01:53,939 INFO L226 Difference]: Without dead ends: 1558 [2020-10-15 04:01:53,945 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 04:01:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-10-15 04:01:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1556. [2020-10-15 04:01:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-15 04:01:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2365 transitions. [2020-10-15 04:01:54,067 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2365 transitions. Word has length 69 [2020-10-15 04:01:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:54,069 INFO L479 AbstractCegarLoop]: Abstraction has 1556 states and 2365 transitions. [2020-10-15 04:01:54,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:01:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2365 transitions. [2020-10-15 04:01:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:01:54,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:54,075 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 04:01:54,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:01:54,075 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:54,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:54,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2130804256, now seen corresponding path program 1 times [2020-10-15 04:01:54,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:54,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053470873] [2020-10-15 04:01:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:54,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:59,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:59,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:01:59,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:01:59,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:01:59,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:59,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:01:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:01:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:01:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:59,332 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:01:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:59,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:59,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:59,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:01:59,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:59,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:59,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:59,370 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 04:01:59,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053470873] [2020-10-15 04:01:59,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:59,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:01:59,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569462638] [2020-10-15 04:01:59,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:01:59,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:59,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:01:59,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:01:59,373 INFO L87 Difference]: Start difference. First operand 1556 states and 2365 transitions. Second operand 5 states. [2020-10-15 04:01:59,571 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 04:02:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:00,549 INFO L93 Difference]: Finished difference Result 2333 states and 3537 transitions. [2020-10-15 04:02:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:02:00,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 04:02:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:00,557 INFO L225 Difference]: With dead ends: 2333 [2020-10-15 04:02:00,558 INFO L226 Difference]: Without dead ends: 1558 [2020-10-15 04:02:00,560 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 04:02:00,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-10-15 04:02:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1556. [2020-10-15 04:02:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-15 04:02:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2346 transitions. [2020-10-15 04:02:00,660 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2346 transitions. Word has length 70 [2020-10-15 04:02:00,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:00,660 INFO L479 AbstractCegarLoop]: Abstraction has 1556 states and 2346 transitions. [2020-10-15 04:02:00,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:00,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2346 transitions. [2020-10-15 04:02:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:02:00,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:00,667 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 04:02:00,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:02:00,667 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:00,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:00,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1922466608, now seen corresponding path program 1 times [2020-10-15 04:02:00,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:00,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070643745] [2020-10-15 04:02:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:04,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:04,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:02:04,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:02:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3630 [2020-10-15 04:02:04,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:04,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:02:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:02:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:02:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:04,562 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:04,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:04,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:04,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:02:04,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:04,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:04,604 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 04:02:04,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070643745] [2020-10-15 04:02:04,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:04,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:02:04,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423010612] [2020-10-15 04:02:04,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:02:04,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:02:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:02:04,610 INFO L87 Difference]: Start difference. First operand 1556 states and 2346 transitions. Second operand 4 states. [2020-10-15 04:02:04,811 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 04:02:05,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:05,536 INFO L93 Difference]: Finished difference Result 3784 states and 5940 transitions. [2020-10-15 04:02:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:05,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-15 04:02:05,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:05,552 INFO L225 Difference]: With dead ends: 3784 [2020-10-15 04:02:05,552 INFO L226 Difference]: Without dead ends: 2610 [2020-10-15 04:02:05,555 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 04:02:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2020-10-15 04:02:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2608. [2020-10-15 04:02:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2608 states. [2020-10-15 04:02:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 4030 transitions. [2020-10-15 04:02:05,747 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 4030 transitions. Word has length 70 [2020-10-15 04:02:05,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:05,749 INFO L479 AbstractCegarLoop]: Abstraction has 2608 states and 4030 transitions. [2020-10-15 04:02:05,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:02:05,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 4030 transitions. [2020-10-15 04:02:05,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 04:02:05,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:05,758 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 04:02:05,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:02:05,758 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:05,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1020242385, now seen corresponding path program 1 times [2020-10-15 04:02:05,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:05,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310818252] [2020-10-15 04:02:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:05,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:05,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:05,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:10,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:10,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:02:10,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:02:10,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:10,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:02:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:11,226 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:11,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:11,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:02:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:11,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:11,290 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 04:02:11,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310818252] [2020-10-15 04:02:11,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:11,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:11,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901795272] [2020-10-15 04:02:11,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:11,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:11,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:11,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:11,294 INFO L87 Difference]: Start difference. First operand 2608 states and 4030 transitions. Second operand 5 states. [2020-10-15 04:02:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:12,733 INFO L93 Difference]: Finished difference Result 7212 states and 11268 transitions. [2020-10-15 04:02:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:12,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 04:02:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:12,759 INFO L225 Difference]: With dead ends: 7212 [2020-10-15 04:02:12,759 INFO L226 Difference]: Without dead ends: 4986 [2020-10-15 04:02:12,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2020-10-15 04:02:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4984. [2020-10-15 04:02:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4984 states. [2020-10-15 04:02:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7642 transitions. [2020-10-15 04:02:13,186 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7642 transitions. Word has length 72 [2020-10-15 04:02:13,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:13,186 INFO L479 AbstractCegarLoop]: Abstraction has 4984 states and 7642 transitions. [2020-10-15 04:02:13,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7642 transitions. [2020-10-15 04:02:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:02:13,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:13,195 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 04:02:13,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:02:13,196 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:13,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:13,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1477454713, now seen corresponding path program 1 times [2020-10-15 04:02:13,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:13,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600193294] [2020-10-15 04:02:13,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:18,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:18,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 04:02:18,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:02:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:02:18,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:18,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:02:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:18,536 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:18,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:18,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:18,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:18,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:02:18,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:18,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:18,587 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 04:02:18,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600193294] [2020-10-15 04:02:18,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:18,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:18,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931293742] [2020-10-15 04:02:18,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:18,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:18,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:18,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:18,595 INFO L87 Difference]: Start difference. First operand 4984 states and 7642 transitions. Second operand 5 states. [2020-10-15 04:02:19,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:19,886 INFO L93 Difference]: Finished difference Result 14265 states and 21809 transitions. [2020-10-15 04:02:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:19,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:02:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:19,938 INFO L225 Difference]: With dead ends: 14265 [2020-10-15 04:02:19,938 INFO L226 Difference]: Without dead ends: 9447 [2020-10-15 04:02:19,952 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 04:02:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9447 states. [2020-10-15 04:02:20,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9447 to 9445. [2020-10-15 04:02:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9445 states. [2020-10-15 04:02:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9445 states to 9445 states and 14275 transitions. [2020-10-15 04:02:20,697 INFO L78 Accepts]: Start accepts. Automaton has 9445 states and 14275 transitions. Word has length 73 [2020-10-15 04:02:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:20,698 INFO L479 AbstractCegarLoop]: Abstraction has 9445 states and 14275 transitions. [2020-10-15 04:02:20,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 9445 states and 14275 transitions. [2020-10-15 04:02:20,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:02:20,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:20,710 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 04:02:20,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:02:20,711 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:20,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:20,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1465045620, now seen corresponding path program 1 times [2020-10-15 04:02:20,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:20,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67998858] [2020-10-15 04:02:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:25,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:25,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 04:02:25,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:02:25,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:25,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:02:25,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:26,011 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:26,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:26,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:26,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:26,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:02:26,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:26,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:26,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:26,054 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 04:02:26,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67998858] [2020-10-15 04:02:26,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:26,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:26,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691975791] [2020-10-15 04:02:26,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:26,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:26,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:26,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:26,057 INFO L87 Difference]: Start difference. First operand 9445 states and 14275 transitions. Second operand 5 states. [2020-10-15 04:02:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:27,795 INFO L93 Difference]: Finished difference Result 26229 states and 40088 transitions. [2020-10-15 04:02:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:27,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:02:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:27,853 INFO L225 Difference]: With dead ends: 26229 [2020-10-15 04:02:27,854 INFO L226 Difference]: Without dead ends: 18067 [2020-10-15 04:02:27,874 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 04:02:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18067 states. [2020-10-15 04:02:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18067 to 18065. [2020-10-15 04:02:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18065 states. [2020-10-15 04:02:29,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18065 states to 18065 states and 27030 transitions. [2020-10-15 04:02:29,248 INFO L78 Accepts]: Start accepts. Automaton has 18065 states and 27030 transitions. Word has length 73 [2020-10-15 04:02:29,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:29,248 INFO L479 AbstractCegarLoop]: Abstraction has 18065 states and 27030 transitions. [2020-10-15 04:02:29,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 18065 states and 27030 transitions. [2020-10-15 04:02:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:02:29,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:29,281 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 04:02:29,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:02:29,282 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:29,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1020833800, now seen corresponding path program 1 times [2020-10-15 04:02:29,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:29,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256288903] [2020-10-15 04:02:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:29,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:29,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:29,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:30,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:34,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:34,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:02:34,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:02:34,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:02:34,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:34,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:02:34,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:34,527 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:34,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:34,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:34,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:34,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:34,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:02:34,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:34,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:34,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:34,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:02:34,572 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 04:02:34,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256288903] [2020-10-15 04:02:34,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:34,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:34,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456504080] [2020-10-15 04:02:34,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:34,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:34,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:34,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:34,575 INFO L87 Difference]: Start difference. First operand 18065 states and 27030 transitions. Second operand 5 states. [2020-10-15 04:02:34,798 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 04:02:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:36,884 INFO L93 Difference]: Finished difference Result 27123 states and 40607 transitions. [2020-10-15 04:02:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:02:36,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-15 04:02:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:36,927 INFO L225 Difference]: With dead ends: 27123 [2020-10-15 04:02:36,927 INFO L226 Difference]: Without dead ends: 18079 [2020-10-15 04:02:36,946 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 04:02:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18079 states. [2020-10-15 04:02:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18079 to 18077. [2020-10-15 04:02:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18077 states. [2020-10-15 04:02:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18077 states to 18077 states and 26760 transitions. [2020-10-15 04:02:37,997 INFO L78 Accepts]: Start accepts. Automaton has 18077 states and 26760 transitions. Word has length 74 [2020-10-15 04:02:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:37,997 INFO L479 AbstractCegarLoop]: Abstraction has 18077 states and 26760 transitions. [2020-10-15 04:02:37,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:37,997 INFO L276 IsEmpty]: Start isEmpty. Operand 18077 states and 26760 transitions. [2020-10-15 04:02:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:02:38,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:38,016 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 04:02:38,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:02:38,017 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:38,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:38,018 INFO L82 PathProgramCache]: Analyzing trace with hash 885743570, now seen corresponding path program 1 times [2020-10-15 04:02:38,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:38,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22871133] [2020-10-15 04:02:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:38,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:38,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:38,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:38,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:41,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:43,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:43,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:02:43,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:02:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:43,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:02:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:02:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:02:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:43,235 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:43,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:43,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:43,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:02:43,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:43,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:43,262 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 04:02:43,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22871133] [2020-10-15 04:02:43,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:43,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:02:43,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971157071] [2020-10-15 04:02:43,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:02:43,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:43,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:02:43,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:02:43,265 INFO L87 Difference]: Start difference. First operand 18077 states and 26760 transitions. Second operand 4 states. [2020-10-15 04:02:43,461 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 04:02:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:45,862 INFO L93 Difference]: Finished difference Result 47521 states and 72330 transitions. [2020-10-15 04:02:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:45,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-15 04:02:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:45,942 INFO L225 Difference]: With dead ends: 47521 [2020-10-15 04:02:45,942 INFO L226 Difference]: Without dead ends: 31903 [2020-10-15 04:02:45,971 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 04:02:46,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31903 states. [2020-10-15 04:02:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31903 to 31901. [2020-10-15 04:02:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31901 states. [2020-10-15 04:02:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31901 states to 31901 states and 47944 transitions. [2020-10-15 04:02:48,006 INFO L78 Accepts]: Start accepts. Automaton has 31901 states and 47944 transitions. Word has length 74 [2020-10-15 04:02:48,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:48,007 INFO L479 AbstractCegarLoop]: Abstraction has 31901 states and 47944 transitions. [2020-10-15 04:02:48,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:02:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 31901 states and 47944 transitions. [2020-10-15 04:02:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 04:02:48,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:48,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:02:48,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:02:48,027 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:48,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2131923110, now seen corresponding path program 1 times [2020-10-15 04:02:48,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:48,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428683523] [2020-10-15 04:02:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:48,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:51,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:53,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:53,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 04:02:53,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:02:53,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:53,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:02:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 04:02:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:02:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:53,267 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:53,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:53,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:53,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:53,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:02:53,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:53,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:53,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:53,291 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 04:02:53,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428683523] [2020-10-15 04:02:53,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:53,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:02:53,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719166958] [2020-10-15 04:02:53,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:02:53,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:53,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:02:53,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:53,293 INFO L87 Difference]: Start difference. First operand 31901 states and 47944 transitions. Second operand 6 states. [2020-10-15 04:02:53,531 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 04:03:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:00,700 INFO L93 Difference]: Finished difference Result 138921 states and 214798 transitions. [2020-10-15 04:03:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:03:00,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-15 04:03:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:00,905 INFO L225 Difference]: With dead ends: 138921 [2020-10-15 04:03:00,905 INFO L226 Difference]: Without dead ends: 109479 [2020-10-15 04:03:00,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:03:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109479 states. [2020-10-15 04:03:07,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109479 to 57629. [2020-10-15 04:03:07,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57629 states. [2020-10-15 04:03:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57629 states to 57629 states and 87240 transitions. [2020-10-15 04:03:07,276 INFO L78 Accepts]: Start accepts. Automaton has 57629 states and 87240 transitions. Word has length 77 [2020-10-15 04:03:07,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:07,277 INFO L479 AbstractCegarLoop]: Abstraction has 57629 states and 87240 transitions. [2020-10-15 04:03:07,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:03:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 57629 states and 87240 transitions. [2020-10-15 04:03:07,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:03:07,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:07,304 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 04:03:07,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:03:07,304 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:07,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1476832213, now seen corresponding path program 1 times [2020-10-15 04:03:07,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:07,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118979134] [2020-10-15 04:03:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:07,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:07,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:08,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:12,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:12,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:03:12,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:03:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:03:12,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:12,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:03:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:03:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:03:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:12,591 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:03:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:12,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:12,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:03:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:12,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:12,617 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 04:03:12,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118979134] [2020-10-15 04:03:12,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:12,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:03:12,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255532382] [2020-10-15 04:03:12,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:03:12,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:12,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:03:12,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:12,619 INFO L87 Difference]: Start difference. First operand 57629 states and 87240 transitions. Second operand 5 states. [2020-10-15 04:03:12,864 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-15 04:03:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:22,197 INFO L93 Difference]: Finished difference Result 142115 states and 216907 transitions. [2020-10-15 04:03:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:03:22,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:03:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:22,358 INFO L225 Difference]: With dead ends: 142115 [2020-10-15 04:03:22,359 INFO L226 Difference]: Without dead ends: 111393 [2020-10-15 04:03:22,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:03:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111393 states. [2020-10-15 04:03:30,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111393 to 87837. [2020-10-15 04:03:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87837 states. [2020-10-15 04:03:30,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87837 states to 87837 states and 132936 transitions. [2020-10-15 04:03:30,519 INFO L78 Accepts]: Start accepts. Automaton has 87837 states and 132936 transitions. Word has length 78 [2020-10-15 04:03:30,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:30,519 INFO L479 AbstractCegarLoop]: Abstraction has 87837 states and 132936 transitions. [2020-10-15 04:03:30,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:03:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 87837 states and 132936 transitions. [2020-10-15 04:03:30,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:03:30,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:30,540 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 04:03:30,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:03:30,540 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:30,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:30,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1726717420, now seen corresponding path program 1 times [2020-10-15 04:03:30,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:30,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527167435] [2020-10-15 04:03:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:30,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:33,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:35,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:35,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:03:35,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:03:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:03:35,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:35,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:03:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 04:03:35,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:03:35,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:35,748 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:03:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:35,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:35,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:35,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:35,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:03:35,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:35,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:35,770 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 04:03:35,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527167435] [2020-10-15 04:03:35,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:35,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:03:35,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998512756] [2020-10-15 04:03:35,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:03:35,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:35,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:03:35,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:35,772 INFO L87 Difference]: Start difference. First operand 87837 states and 132936 transitions. Second operand 5 states. [2020-10-15 04:03:35,977 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 04:03:49,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:49,430 INFO L93 Difference]: Finished difference Result 262691 states and 403275 transitions. [2020-10-15 04:03:49,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:03:49,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:03:49,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:49,676 INFO L225 Difference]: With dead ends: 262691 [2020-10-15 04:03:49,677 INFO L226 Difference]: Without dead ends: 177313 [2020-10-15 04:03:49,747 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 04:03:49,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177313 states. [2020-10-15 04:04:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177313 to 131869. [2020-10-15 04:04:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131869 states. [2020-10-15 04:04:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131869 states to 131869 states and 200136 transitions. [2020-10-15 04:04:02,563 INFO L78 Accepts]: Start accepts. Automaton has 131869 states and 200136 transitions. Word has length 78 [2020-10-15 04:04:02,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:02,564 INFO L479 AbstractCegarLoop]: Abstraction has 131869 states and 200136 transitions. [2020-10-15 04:04:02,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 131869 states and 200136 transitions. [2020-10-15 04:04:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:04:02,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:02,585 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 04:04:02,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:04:02,585 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:02,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:02,586 INFO L82 PathProgramCache]: Analyzing trace with hash -88126839, now seen corresponding path program 1 times [2020-10-15 04:04:02,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:02,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296268757] [2020-10-15 04:04:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:02,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:02,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:02,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:07,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:07,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:04:07,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:04:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:04:07,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:07,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 04:04:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:04:07,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:07,875 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:04:07,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:07,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:07,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:07,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:04:07,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:07,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:07,903 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 04:04:07,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296268757] [2020-10-15 04:04:07,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:07,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:07,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639333294] [2020-10-15 04:04:07,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:07,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:07,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:07,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:07,905 INFO L87 Difference]: Start difference. First operand 131869 states and 200136 transitions. Second operand 5 states. [2020-10-15 04:04:08,132 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-15 04:04:31,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:31,467 INFO L93 Difference]: Finished difference Result 330019 states and 503691 transitions. [2020-10-15 04:04:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:04:31,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:04:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:31,848 INFO L225 Difference]: With dead ends: 330019 [2020-10-15 04:04:31,848 INFO L226 Difference]: Without dead ends: 258209 [2020-10-15 04:04:31,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:04:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258209 states. [2020-10-15 04:04:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258209 to 202525. [2020-10-15 04:04:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202525 states. [2020-10-15 04:04:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202525 states to 202525 states and 306696 transitions. [2020-10-15 04:04:55,080 INFO L78 Accepts]: Start accepts. Automaton has 202525 states and 306696 transitions. Word has length 78 [2020-10-15 04:04:55,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:55,080 INFO L479 AbstractCegarLoop]: Abstraction has 202525 states and 306696 transitions. [2020-10-15 04:04:55,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 202525 states and 306696 transitions. [2020-10-15 04:04:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:04:55,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:55,108 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 04:04:55,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:04:55,108 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:55,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1074793037, now seen corresponding path program 1 times [2020-10-15 04:04:55,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:55,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729731593] [2020-10-15 04:04:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:55,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:00,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:00,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:05:00,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:05:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:05:00,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:00,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:05:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 04:05:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:05:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:00,337 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:05:00,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:00,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:00,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:00,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:00,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:05:00,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:00,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:00,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:00,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:00,358 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 04:05:00,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729731593] [2020-10-15 04:05:00,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:00,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:05:00,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579139762] [2020-10-15 04:05:00,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:05:00,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:00,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:05:00,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:00,360 INFO L87 Difference]: Start difference. First operand 202525 states and 306696 transitions. Second operand 6 states. [2020-10-15 04:05:00,585 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 173