/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_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:23:36,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:23:36,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:23:36,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:23:36,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:23:36,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:23:36,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:23:36,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:23:36,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:23:36,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:23:36,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:23:36,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:23:36,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:23:36,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:23:36,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:23:36,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:23:36,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:23:36,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:23:36,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:23:36,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:23:36,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:23:36,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:23:36,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:23:36,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:23:36,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:23:36,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:23:36,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:23:36,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:23:36,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:23:36,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:23:36,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:23:36,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:23:36,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:23:36,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:23:36,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:23:36,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:23:36,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:23:36,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:23:36,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:23:36,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:23:36,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:23:36,400 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 03:23:36,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:23:36,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:23:36,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:23:36,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:23:36,427 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:23:36,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:23:36,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:23:36,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:23:36,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:23:36,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:23:36,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:23:36,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:23:36,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:23:36,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:23:36,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:23:36,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:23:36,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:23:36,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:23:36,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:23:36,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:23:36,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:23:36,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:23:36,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:23:36,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:23:36,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:23:36,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:23:36,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:23:36,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:23:36,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:23:36,432 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 03:23:36,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:23:36,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:23:36,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:23:36,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:23:36,732 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:23:36,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:23:36,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9981fcc50/296444016a4947fea88254a50ad33694/FLAGc4a6bf072 [2020-10-15 03:23:37,305 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:23:37,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:23:37,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9981fcc50/296444016a4947fea88254a50ad33694/FLAGc4a6bf072 [2020-10-15 03:23:37,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9981fcc50/296444016a4947fea88254a50ad33694 [2020-10-15 03:23:37,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:23:37,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:23:37,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:23:37,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:23:37,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:23:37,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:37" (1/1) ... [2020-10-15 03:23:37,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cf2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37, skipping insertion in model container [2020-10-15 03:23:37,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:37" (1/1) ... [2020-10-15 03:23:37,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:23:37,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:23:38,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:23:38,109 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:23:38,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:23:38,226 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:23:38,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38 WrapperNode [2020-10-15 03:23:38,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:23:38,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:23:38,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:23:38,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:23:38,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38" (1/1) ... [2020-10-15 03:23:38,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38" (1/1) ... [2020-10-15 03:23:38,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38" (1/1) ... [2020-10-15 03:23:38,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38" (1/1) ... [2020-10-15 03:23:38,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38" (1/1) ... [2020-10-15 03:23:38,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38" (1/1) ... [2020-10-15 03:23:38,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38" (1/1) ... [2020-10-15 03:23:38,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:23:38,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:23:38,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:23:38,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:23:38,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38" (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 03:23:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:23:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:23:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:23:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:23:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:23:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:23:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:23:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:23:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:23:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:23:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:23:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:23:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:23:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:23:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:23:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:23:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:23:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:23:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:23:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:23:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:23:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:23:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:23:39,106 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:23:39,106 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:23:39,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:39 BoogieIcfgContainer [2020-10-15 03:23:39,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:23:39,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:23:39,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:23:39,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:23:39,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:37" (1/3) ... [2020-10-15 03:23:39,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1532c983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:39, skipping insertion in model container [2020-10-15 03:23:39,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:38" (2/3) ... [2020-10-15 03:23:39,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1532c983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:39, skipping insertion in model container [2020-10-15 03:23:39,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:39" (3/3) ... [2020-10-15 03:23:39,121 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:23:39,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:23:39,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:23:39,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:23:39,181 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:23:39,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:23:39,182 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:23:39,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:23:39,183 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:23:39,183 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:23:39,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:23:39,183 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:23:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-15 03:23:39,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:23:39,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:39,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:23:39,220 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:39,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:39,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1161095885, now seen corresponding path program 1 times [2020-10-15 03:23:39,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:39,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305811155] [2020-10-15 03:23:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:39,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:39,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:41,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:44,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:44,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:23:44,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:23:44,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 03:23:44,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:44,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:23:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:23:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:23:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:23:44,956 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:23:44,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:23:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:44,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:45,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:23:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:23:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 03:23:45,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:45,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:23:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:23:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:23:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:23:45,065 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 03:23:45,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305811155] [2020-10-15 03:23:45,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:23:45,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:23:45,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231716892] [2020-10-15 03:23:45,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:23:45,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:23:45,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:23:45,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:23:45,099 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 6 states. [2020-10-15 03:23:45,366 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:23:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:23:46,194 INFO L93 Difference]: Finished difference Result 259 states and 428 transitions. [2020-10-15 03:23:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:23:46,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-15 03:23:46,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:23:46,210 INFO L225 Difference]: With dead ends: 259 [2020-10-15 03:23:46,210 INFO L226 Difference]: Without dead ends: 150 [2020-10-15 03:23:46,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:23:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-15 03:23:46,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-15 03:23:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-15 03:23:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 204 transitions. [2020-10-15 03:23:46,279 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 204 transitions. Word has length 79 [2020-10-15 03:23:46,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:23:46,280 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 204 transitions. [2020-10-15 03:23:46,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:23:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 204 transitions. [2020-10-15 03:23:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:23:46,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:46,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:23:46,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:23:46,284 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:46,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:46,285 INFO L82 PathProgramCache]: Analyzing trace with hash -777040198, now seen corresponding path program 1 times [2020-10-15 03:23:46,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:46,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144612871] [2020-10-15 03:23:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:46,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:46,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:46,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:46,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:46,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:47,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:50,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:51,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:51,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:23:51,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:23:51,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 03:23:51,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:51,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:23:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:23:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:23:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:23:51,613 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:23:51,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:23:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:51,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:51,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:23:51,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:23:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:23:51,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:51,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:23:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:23:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:23:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:23:51,683 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 03:23:51,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144612871] [2020-10-15 03:23:51,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:23:51,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:23:51,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508247584] [2020-10-15 03:23:51,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:23:51,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:23:51,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:23:51,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:23:51,688 INFO L87 Difference]: Start difference. First operand 150 states and 204 transitions. Second operand 6 states. [2020-10-15 03:23:51,877 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:23:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:23:52,442 INFO L93 Difference]: Finished difference Result 247 states and 351 transitions. [2020-10-15 03:23:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:23:52,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-15 03:23:52,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:23:52,445 INFO L225 Difference]: With dead ends: 247 [2020-10-15 03:23:52,445 INFO L226 Difference]: Without dead ends: 150 [2020-10-15 03:23:52,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:23:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-15 03:23:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-15 03:23:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-15 03:23:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 202 transitions. [2020-10-15 03:23:52,470 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 202 transitions. Word has length 80 [2020-10-15 03:23:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:23:52,473 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 202 transitions. [2020-10-15 03:23:52,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:23:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 202 transitions. [2020-10-15 03:23:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:23:52,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:52,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:23:52,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:23:52,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:52,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:52,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2112311650, now seen corresponding path program 1 times [2020-10-15 03:23:52,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:52,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60763685] [2020-10-15 03:23:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:52,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:52,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:57,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:57,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:23:57,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:23:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:23:57,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:57,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:23:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:23:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:23:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:23:57,885 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:23:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:23:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:57,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:57,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:23:57,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:23:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:23:57,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:57,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:23:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:23:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:23:57,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:23:57,960 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 03:23:57,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60763685] [2020-10-15 03:23:57,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:23:57,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:23:57,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906571636] [2020-10-15 03:23:57,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:23:57,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:23:57,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:23:57,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:23:57,973 INFO L87 Difference]: Start difference. First operand 150 states and 202 transitions. Second operand 8 states. [2020-10-15 03:23:58,161 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:23:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:23:59,171 INFO L93 Difference]: Finished difference Result 294 states and 426 transitions. [2020-10-15 03:23:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:23:59,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-15 03:23:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:23:59,179 INFO L225 Difference]: With dead ends: 294 [2020-10-15 03:23:59,180 INFO L226 Difference]: Without dead ends: 212 [2020-10-15 03:23:59,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:23:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-15 03:23:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 150. [2020-10-15 03:23:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-15 03:23:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 201 transitions. [2020-10-15 03:23:59,224 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 201 transitions. Word has length 81 [2020-10-15 03:23:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:23:59,225 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 201 transitions. [2020-10-15 03:23:59,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:23:59,226 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 201 transitions. [2020-10-15 03:23:59,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:23:59,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:59,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:23:59,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:23:59,238 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:59,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:59,239 INFO L82 PathProgramCache]: Analyzing trace with hash 80816116, now seen corresponding path program 1 times [2020-10-15 03:23:59,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:59,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833639954] [2020-10-15 03:23:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:59,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:59,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:59,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:00,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:02,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:02,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:02,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:02,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:03,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:04,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:04,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:24:04,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:24:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-15 03:24:04,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:04,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:24:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:24:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:24:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:24:04,585 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:24:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:04,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:04,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:04,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:04,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:04,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:24:04,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:04,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:24:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:24:04,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:24:04,628 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 03:24:04,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833639954] [2020-10-15 03:24:04,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:04,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:24:04,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720877974] [2020-10-15 03:24:04,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:24:04,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:04,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:24:04,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:24:04,632 INFO L87 Difference]: Start difference. First operand 150 states and 201 transitions. Second operand 8 states. [2020-10-15 03:24:04,817 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:24:06,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:06,402 INFO L93 Difference]: Finished difference Result 815 states and 1236 transitions. [2020-10-15 03:24:06,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:24:06,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-15 03:24:06,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:06,407 INFO L225 Difference]: With dead ends: 815 [2020-10-15 03:24:06,407 INFO L226 Difference]: Without dead ends: 754 [2020-10-15 03:24:06,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:24:06,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2020-10-15 03:24:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 230. [2020-10-15 03:24:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-15 03:24:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 326 transitions. [2020-10-15 03:24:06,445 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 326 transitions. Word has length 82 [2020-10-15 03:24:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:06,445 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 326 transitions. [2020-10-15 03:24:06,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:24:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 326 transitions. [2020-10-15 03:24:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:24:06,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:06,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:24:06,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:24:06,447 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:06,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:06,448 INFO L82 PathProgramCache]: Analyzing trace with hash -100284581, now seen corresponding path program 1 times [2020-10-15 03:24:06,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:06,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806147855] [2020-10-15 03:24:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:07,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:07,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:11,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:11,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:24:11,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:24:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:24:11,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:11,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:24:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:24:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:24:11,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:24:11,634 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:24:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:11,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:11,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:11,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:24:11,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:11,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:24:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:24:11,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:24:11,672 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 03:24:11,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806147855] [2020-10-15 03:24:11,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:11,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:24:11,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620751520] [2020-10-15 03:24:11,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:24:11,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:24:11,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:24:11,676 INFO L87 Difference]: Start difference. First operand 230 states and 326 transitions. Second operand 6 states. [2020-10-15 03:24:11,883 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 03:24:13,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:13,355 INFO L93 Difference]: Finished difference Result 1167 states and 1774 transitions. [2020-10-15 03:24:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:24:13,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-15 03:24:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:13,361 INFO L225 Difference]: With dead ends: 1167 [2020-10-15 03:24:13,361 INFO L226 Difference]: Without dead ends: 1026 [2020-10-15 03:24:13,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:24:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-15 03:24:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 662. [2020-10-15 03:24:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-15 03:24:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 991 transitions. [2020-10-15 03:24:13,456 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 991 transitions. Word has length 83 [2020-10-15 03:24:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:13,457 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 991 transitions. [2020-10-15 03:24:13,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:24:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 991 transitions. [2020-10-15 03:24:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:24:13,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:13,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:24:13,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:24:13,459 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1512548762, now seen corresponding path program 1 times [2020-10-15 03:24:13,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:13,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958119164] [2020-10-15 03:24:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:17,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:24:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:24:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:24:18,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:18,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:24:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:24:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:24:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:24:18,677 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:24:18,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:18,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:18,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:18,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:18,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:24:18,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:18,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:24:18,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:18,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:24:18,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:24:18,708 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 03:24:18,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958119164] [2020-10-15 03:24:18,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:18,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:24:18,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675238359] [2020-10-15 03:24:18,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:24:18,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:18,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:24:18,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:24:18,712 INFO L87 Difference]: Start difference. First operand 662 states and 991 transitions. Second operand 6 states. [2020-10-15 03:24:18,853 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 03:24:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:20,726 INFO L93 Difference]: Finished difference Result 4881 states and 7566 transitions. [2020-10-15 03:24:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:24:20,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-15 03:24:20,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:20,749 INFO L225 Difference]: With dead ends: 4881 [2020-10-15 03:24:20,749 INFO L226 Difference]: Without dead ends: 4361 [2020-10-15 03:24:20,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:24:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2020-10-15 03:24:21,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 2335. [2020-10-15 03:24:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2335 states. [2020-10-15 03:24:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3580 transitions. [2020-10-15 03:24:21,011 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3580 transitions. Word has length 84 [2020-10-15 03:24:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:21,012 INFO L479 AbstractCegarLoop]: Abstraction has 2335 states and 3580 transitions. [2020-10-15 03:24:21,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:24:21,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3580 transitions. [2020-10-15 03:24:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:24:21,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:21,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:24:21,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:24:21,015 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:21,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:21,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1782227241, now seen corresponding path program 1 times [2020-10-15 03:24:21,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:21,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482982939] [2020-10-15 03:24:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:21,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:22,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:22,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:22,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:22,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:24,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:25,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:25,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:25,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:26,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:26,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:24:26,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-15 03:24:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:24:26,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:26,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:24:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:24:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:24:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:26,260 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:24:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:26,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:26,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:26,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:26,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:24:26,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:26,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:24:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:24:26,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:24:26,315 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 03:24:26,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482982939] [2020-10-15 03:24:26,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:26,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:24:26,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176155600] [2020-10-15 03:24:26,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:24:26,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:26,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:24:26,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:24:26,317 INFO L87 Difference]: Start difference. First operand 2335 states and 3580 transitions. Second operand 9 states. [2020-10-15 03:24:26,486 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:24:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:28,682 INFO L93 Difference]: Finished difference Result 16129 states and 24814 transitions. [2020-10-15 03:24:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:24:28,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-15 03:24:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:28,750 INFO L225 Difference]: With dead ends: 16129 [2020-10-15 03:24:28,750 INFO L226 Difference]: Without dead ends: 14133 [2020-10-15 03:24:28,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:24:28,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14133 states. [2020-10-15 03:24:29,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14133 to 2287. [2020-10-15 03:24:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-10-15 03:24:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3478 transitions. [2020-10-15 03:24:29,174 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3478 transitions. Word has length 84 [2020-10-15 03:24:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:29,175 INFO L479 AbstractCegarLoop]: Abstraction has 2287 states and 3478 transitions. [2020-10-15 03:24:29,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:24:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3478 transitions. [2020-10-15 03:24:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:24:29,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:29,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:24:29,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:24:29,178 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:29,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:29,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1479820668, now seen corresponding path program 1 times [2020-10-15 03:24:29,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:29,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039898873] [2020-10-15 03:24:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:29,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:32,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:33,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:34,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:34,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:24:34,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-15 03:24:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:24:34,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:34,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:24:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:24:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:24:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:34,411 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:24:34,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:34,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:34,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:34,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:34,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:34,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:24:34,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:34,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:24:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:24:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:34,454 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 03:24:34,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039898873] [2020-10-15 03:24:34,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:34,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:24:34,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421336863] [2020-10-15 03:24:34,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:24:34,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:34,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:24:34,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:24:34,457 INFO L87 Difference]: Start difference. First operand 2287 states and 3478 transitions. Second operand 9 states. [2020-10-15 03:24:34,626 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:24:37,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:37,095 INFO L93 Difference]: Finished difference Result 17263 states and 26233 transitions. [2020-10-15 03:24:37,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:24:37,096 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-15 03:24:37,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:37,145 INFO L225 Difference]: With dead ends: 17263 [2020-10-15 03:24:37,145 INFO L226 Difference]: Without dead ends: 15253 [2020-10-15 03:24:37,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:24:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15253 states. [2020-10-15 03:24:37,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15253 to 2499. [2020-10-15 03:24:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-10-15 03:24:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 3703 transitions. [2020-10-15 03:24:37,598 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 3703 transitions. Word has length 84 [2020-10-15 03:24:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:37,598 INFO L479 AbstractCegarLoop]: Abstraction has 2499 states and 3703 transitions. [2020-10-15 03:24:37,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:24:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 3703 transitions. [2020-10-15 03:24:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:24:37,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:37,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:24:37,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:24:37,602 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:37,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:37,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1647761038, now seen corresponding path program 1 times [2020-10-15 03:24:37,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:37,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98567778] [2020-10-15 03:24:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:37,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:37,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:38,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:39,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:42,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:42,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:24:42,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:24:42,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:24:42,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:42,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:24:42,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:24:42,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:24:42,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:42,858 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:24:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:42,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:42,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:42,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:42,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:42,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:24:42,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:42,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:24:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:24:42,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:42,890 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 03:24:42,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98567778] [2020-10-15 03:24:42,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:42,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:24:42,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781154723] [2020-10-15 03:24:42,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:24:42,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:42,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:24:42,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:24:42,892 INFO L87 Difference]: Start difference. First operand 2499 states and 3703 transitions. Second operand 8 states. [2020-10-15 03:24:43,118 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:24:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:44,707 INFO L93 Difference]: Finished difference Result 9995 states and 15197 transitions. [2020-10-15 03:24:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:24:44,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-15 03:24:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:44,730 INFO L225 Difference]: With dead ends: 9995 [2020-10-15 03:24:44,730 INFO L226 Difference]: Without dead ends: 8137 [2020-10-15 03:24:44,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:24:44,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8137 states. [2020-10-15 03:24:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8137 to 2499. [2020-10-15 03:24:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-10-15 03:24:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 3687 transitions. [2020-10-15 03:24:45,212 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 3687 transitions. Word has length 84 [2020-10-15 03:24:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:45,212 INFO L479 AbstractCegarLoop]: Abstraction has 2499 states and 3687 transitions. [2020-10-15 03:24:45,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:24:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 3687 transitions. [2020-10-15 03:24:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:24:45,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:45,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:24:45,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:24:45,219 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1854659533, now seen corresponding path program 1 times [2020-10-15 03:24:45,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:45,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54789545] [2020-10-15 03:24:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:45,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:45,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:45,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:47,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:47,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:47,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:50,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:50,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:24:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:24:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:24:50,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:50,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:24:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:24:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:24:50,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:50,430 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:24:50,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:50,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:50,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:50,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:24:50,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:50,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:24:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:24:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:50,458 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 03:24:50,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54789545] [2020-10-15 03:24:50,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:50,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:24:50,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139918537] [2020-10-15 03:24:50,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:24:50,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:50,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:24:50,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:24:50,460 INFO L87 Difference]: Start difference. First operand 2499 states and 3687 transitions. Second operand 5 states. [2020-10-15 03:24:50,630 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:24:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:51,589 INFO L93 Difference]: Finished difference Result 6039 states and 9065 transitions. [2020-10-15 03:24:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:24:51,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-15 03:24:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:51,599 INFO L225 Difference]: With dead ends: 6039 [2020-10-15 03:24:51,599 INFO L226 Difference]: Without dead ends: 4181 [2020-10-15 03:24:51,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:24:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2020-10-15 03:24:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4147. [2020-10-15 03:24:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4147 states. [2020-10-15 03:24:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 6111 transitions. [2020-10-15 03:24:52,310 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 6111 transitions. Word has length 84 [2020-10-15 03:24:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:52,310 INFO L479 AbstractCegarLoop]: Abstraction has 4147 states and 6111 transitions. [2020-10-15 03:24:52,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:24:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 6111 transitions. [2020-10-15 03:24:52,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:24:52,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:52,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:24:52,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:24:52,313 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:52,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:52,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1838933183, now seen corresponding path program 1 times [2020-10-15 03:24:52,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:52,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620306451] [2020-10-15 03:24:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:52,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:53,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:57,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:57,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:24:57,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:24:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:24:57,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:57,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:24:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:24:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:24:57,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:57,525 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:24:57,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:57,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:57,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:57,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:57,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:24:57,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:57,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:24:57,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:57,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:24:57,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:57,547 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 03:24:57,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620306451] [2020-10-15 03:24:57,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:57,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:24:57,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62569382] [2020-10-15 03:24:57,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:24:57,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:57,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:24:57,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:24:57,549 INFO L87 Difference]: Start difference. First operand 4147 states and 6111 transitions. Second operand 8 states. [2020-10-15 03:24:57,740 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 03:25:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:00,879 INFO L93 Difference]: Finished difference Result 22353 states and 33464 transitions. [2020-10-15 03:25:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:25:00,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-15 03:25:00,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:00,906 INFO L225 Difference]: With dead ends: 22353 [2020-10-15 03:25:00,907 INFO L226 Difference]: Without dead ends: 18847 [2020-10-15 03:25:00,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:25:00,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18847 states. [2020-10-15 03:25:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18847 to 8427. [2020-10-15 03:25:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8427 states. [2020-10-15 03:25:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8427 states to 8427 states and 12487 transitions. [2020-10-15 03:25:02,205 INFO L78 Accepts]: Start accepts. Automaton has 8427 states and 12487 transitions. Word has length 84 [2020-10-15 03:25:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:02,205 INFO L479 AbstractCegarLoop]: Abstraction has 8427 states and 12487 transitions. [2020-10-15 03:25:02,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:25:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 8427 states and 12487 transitions. [2020-10-15 03:25:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:25:02,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:02,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:02,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:25:02,209 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:02,209 INFO L82 PathProgramCache]: Analyzing trace with hash -668401374, now seen corresponding path program 1 times [2020-10-15 03:25:02,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:02,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067910442] [2020-10-15 03:25:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:02,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:02,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:02,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:02,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:04,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:04,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:04,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:05,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:07,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:07,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:25:07,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:25:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:25:07,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:07,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:25:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:25:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:25:07,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:07,565 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:07,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:07,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:07,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:07,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:25:07,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:07,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:07,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067910442] [2020-10-15 03:25:07,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:07,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:25:07,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532326412] [2020-10-15 03:25:07,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:25:07,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:07,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:25:07,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:25:07,605 INFO L87 Difference]: Start difference. First operand 8427 states and 12487 transitions. Second operand 9 states. [2020-10-15 03:25:07,792 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 03:25:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:10,546 INFO L93 Difference]: Finished difference Result 17565 states and 26153 transitions. [2020-10-15 03:25:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:25:10,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-15 03:25:10,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:10,565 INFO L225 Difference]: With dead ends: 17565 [2020-10-15 03:25:10,565 INFO L226 Difference]: Without dead ends: 13525 [2020-10-15 03:25:10,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:25:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13525 states. [2020-10-15 03:25:11,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13525 to 7025. [2020-10-15 03:25:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7025 states. [2020-10-15 03:25:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7025 states to 7025 states and 10381 transitions. [2020-10-15 03:25:11,779 INFO L78 Accepts]: Start accepts. Automaton has 7025 states and 10381 transitions. Word has length 84 [2020-10-15 03:25:11,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:11,779 INFO L479 AbstractCegarLoop]: Abstraction has 7025 states and 10381 transitions. [2020-10-15 03:25:11,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:25:11,779 INFO L276 IsEmpty]: Start isEmpty. Operand 7025 states and 10381 transitions. [2020-10-15 03:25:11,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:25:11,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:11,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:11,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:25:11,782 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:11,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:11,782 INFO L82 PathProgramCache]: Analyzing trace with hash 457106094, now seen corresponding path program 1 times [2020-10-15 03:25:11,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:11,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459044961] [2020-10-15 03:25:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:11,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:12,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:12,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:12,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:13,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:13,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:16,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:16,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:25:16,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:25:16,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:25:16,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:16,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:25:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:25:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:25:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:17,062 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:17,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:17,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:17,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:17,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:17,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:25:17,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:17,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:17,087 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 03:25:17,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459044961] [2020-10-15 03:25:17,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:17,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:25:17,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736041369] [2020-10-15 03:25:17,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:25:17,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:17,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:25:17,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:25:17,088 INFO L87 Difference]: Start difference. First operand 7025 states and 10381 transitions. Second operand 9 states. [2020-10-15 03:25:17,283 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:25:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:20,704 INFO L93 Difference]: Finished difference Result 20329 states and 30123 transitions. [2020-10-15 03:25:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:25:20,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-15 03:25:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:20,722 INFO L225 Difference]: With dead ends: 20329 [2020-10-15 03:25:20,723 INFO L226 Difference]: Without dead ends: 13829 [2020-10-15 03:25:20,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:25:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13829 states. [2020-10-15 03:25:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13829 to 7025. [2020-10-15 03:25:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7025 states. [2020-10-15 03:25:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7025 states to 7025 states and 10365 transitions. [2020-10-15 03:25:22,029 INFO L78 Accepts]: Start accepts. Automaton has 7025 states and 10365 transitions. Word has length 85 [2020-10-15 03:25:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:22,029 INFO L479 AbstractCegarLoop]: Abstraction has 7025 states and 10365 transitions. [2020-10-15 03:25:22,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:25:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7025 states and 10365 transitions. [2020-10-15 03:25:22,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:25:22,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:22,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:22,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:25:22,031 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:22,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:22,031 INFO L82 PathProgramCache]: Analyzing trace with hash 309099903, now seen corresponding path program 1 times [2020-10-15 03:25:22,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:22,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166446562] [2020-10-15 03:25:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:22,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:27,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:25:27,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:25:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:25:27,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:27,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:25:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:25:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:25:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:27,416 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:27,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:27,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:27,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:27,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:25:27,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:27,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:27,454 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 03:25:27,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166446562] [2020-10-15 03:25:27,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:27,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:25:27,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735283396] [2020-10-15 03:25:27,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:25:27,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:27,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:25:27,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:25:27,455 INFO L87 Difference]: Start difference. First operand 7025 states and 10365 transitions. Second operand 10 states. [2020-10-15 03:25:27,653 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 03:25:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:31,086 INFO L93 Difference]: Finished difference Result 20073 states and 29839 transitions. [2020-10-15 03:25:31,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:25:31,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-15 03:25:31,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:31,102 INFO L225 Difference]: With dead ends: 20073 [2020-10-15 03:25:31,102 INFO L226 Difference]: Without dead ends: 13573 [2020-10-15 03:25:31,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:25:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13573 states. [2020-10-15 03:25:32,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13573 to 7017. [2020-10-15 03:25:32,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7017 states. [2020-10-15 03:25:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7017 states to 7017 states and 10341 transitions. [2020-10-15 03:25:32,452 INFO L78 Accepts]: Start accepts. Automaton has 7017 states and 10341 transitions. Word has length 86 [2020-10-15 03:25:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:32,452 INFO L479 AbstractCegarLoop]: Abstraction has 7017 states and 10341 transitions. [2020-10-15 03:25:32,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:25:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 7017 states and 10341 transitions. [2020-10-15 03:25:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:25:32,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:32,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:32,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:25:32,454 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:32,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2130455872, now seen corresponding path program 1 times [2020-10-15 03:25:32,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:32,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343768409] [2020-10-15 03:25:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:32,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:32,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:33,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:34,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:37,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:37,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:25:37,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:25:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:25:37,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:37,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:25:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:25:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:37,634 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:37,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:37,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:37,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:37,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:37,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:25:37,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:37,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:37,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:37,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:37,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:25:37,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:37,659 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 03:25:37,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343768409] [2020-10-15 03:25:37,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:37,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:25:37,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724524775] [2020-10-15 03:25:37,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:25:37,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:37,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:25:37,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:25:37,661 INFO L87 Difference]: Start difference. First operand 7017 states and 10341 transitions. Second operand 6 states. [2020-10-15 03:25:37,822 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 03:25:39,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:39,536 INFO L93 Difference]: Finished difference Result 11329 states and 16799 transitions. [2020-10-15 03:25:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:25:39,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:25:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:39,541 INFO L225 Difference]: With dead ends: 11329 [2020-10-15 03:25:39,541 INFO L226 Difference]: Without dead ends: 4599 [2020-10-15 03:25:39,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:25:39,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2020-10-15 03:25:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4597. [2020-10-15 03:25:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4597 states. [2020-10-15 03:25:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 6765 transitions. [2020-10-15 03:25:40,412 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 6765 transitions. Word has length 86 [2020-10-15 03:25:40,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:40,412 INFO L479 AbstractCegarLoop]: Abstraction has 4597 states and 6765 transitions. [2020-10-15 03:25:40,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:25:40,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 6765 transitions. [2020-10-15 03:25:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:25:40,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:40,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:40,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:25:40,414 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:40,414 INFO L82 PathProgramCache]: Analyzing trace with hash -431722599, now seen corresponding path program 1 times [2020-10-15 03:25:40,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:40,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883239861] [2020-10-15 03:25:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:40,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:41,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:45,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:45,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:25:45,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:25:45,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:25:45,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:45,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:25:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:25:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:25:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:45,731 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:45,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:45,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:45,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:45,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:25:45,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:45,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:45,761 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 03:25:45,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883239861] [2020-10-15 03:25:45,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:45,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:25:45,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512454449] [2020-10-15 03:25:45,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:25:45,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:45,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:25:45,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:25:45,764 INFO L87 Difference]: Start difference. First operand 4597 states and 6765 transitions. Second operand 9 states. [2020-10-15 03:25:45,964 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:25:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:47,935 INFO L93 Difference]: Finished difference Result 9011 states and 13305 transitions. [2020-10-15 03:25:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:25:47,935 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:25:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:47,940 INFO L225 Difference]: With dead ends: 9011 [2020-10-15 03:25:47,940 INFO L226 Difference]: Without dead ends: 4637 [2020-10-15 03:25:47,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:25:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4637 states. [2020-10-15 03:25:48,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4637 to 4597. [2020-10-15 03:25:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4597 states. [2020-10-15 03:25:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 6761 transitions. [2020-10-15 03:25:48,997 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 6761 transitions. Word has length 87 [2020-10-15 03:25:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:48,998 INFO L479 AbstractCegarLoop]: Abstraction has 4597 states and 6761 transitions. [2020-10-15 03:25:48,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:25:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 6761 transitions. [2020-10-15 03:25:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:25:48,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:48,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:49,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:25:49,000 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:49,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:49,000 INFO L82 PathProgramCache]: Analyzing trace with hash 78532161, now seen corresponding path program 1 times [2020-10-15 03:25:49,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:49,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718221565] [2020-10-15 03:25:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:49,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:54,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:54,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:25:54,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:25:54,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:25:54,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:54,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:25:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:25:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 03:25:54,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:54,295 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:54,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:54,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:54,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:54,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:54,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:25:54,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:54,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:54,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:54,320 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 03:25:54,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718221565] [2020-10-15 03:25:54,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:54,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:25:54,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13026032] [2020-10-15 03:25:54,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:25:54,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:54,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:25:54,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:25:54,322 INFO L87 Difference]: Start difference. First operand 4597 states and 6761 transitions. Second operand 9 states. [2020-10-15 03:25:54,502 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:25:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:57,585 INFO L93 Difference]: Finished difference Result 10033 states and 14826 transitions. [2020-10-15 03:25:57,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:25:57,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:25:57,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:57,591 INFO L225 Difference]: With dead ends: 10033 [2020-10-15 03:25:57,591 INFO L226 Difference]: Without dead ends: 5675 [2020-10-15 03:25:57,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:25:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2020-10-15 03:25:58,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 4597. [2020-10-15 03:25:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4597 states. [2020-10-15 03:25:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 6735 transitions. [2020-10-15 03:25:58,643 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 6735 transitions. Word has length 87 [2020-10-15 03:25:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:58,644 INFO L479 AbstractCegarLoop]: Abstraction has 4597 states and 6735 transitions. [2020-10-15 03:25:58,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:25:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 6735 transitions. [2020-10-15 03:25:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:25:58,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:58,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:58,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:25:58,646 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:58,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1793755521, now seen corresponding path program 1 times [2020-10-15 03:25:58,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:58,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826084986] [2020-10-15 03:25:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:58,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:58,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:59,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:59,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:25:59,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:25:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-10-15 03:25:59,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:59,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:25:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:59,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:25:59,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:00,019 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:00,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:00,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:00,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:00,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:26:00,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:00,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:26:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:26:00,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:00,049 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 03:26:00,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826084986] [2020-10-15 03:26:00,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:00,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:26:00,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420818241] [2020-10-15 03:26:00,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:00,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:00,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:00,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:00,051 INFO L87 Difference]: Start difference. First operand 4597 states and 6735 transitions. Second operand 6 states. [2020-10-15 03:26:00,218 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:26:02,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:02,720 INFO L93 Difference]: Finished difference Result 13132 states and 19463 transitions. [2020-10-15 03:26:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:26:02,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-15 03:26:02,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:02,728 INFO L225 Difference]: With dead ends: 13132 [2020-10-15 03:26:02,728 INFO L226 Difference]: Without dead ends: 8699 [2020-10-15 03:26:02,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:26:02,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2020-10-15 03:26:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 8697. [2020-10-15 03:26:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8697 states. [2020-10-15 03:26:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8697 states to 8697 states and 12843 transitions. [2020-10-15 03:26:04,586 INFO L78 Accepts]: Start accepts. Automaton has 8697 states and 12843 transitions. Word has length 88 [2020-10-15 03:26:04,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:04,586 INFO L479 AbstractCegarLoop]: Abstraction has 8697 states and 12843 transitions. [2020-10-15 03:26:04,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8697 states and 12843 transitions. [2020-10-15 03:26:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:26:04,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:04,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:26:04,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:26:04,587 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:04,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1113288414, now seen corresponding path program 1 times [2020-10-15 03:26:04,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:04,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257233993] [2020-10-15 03:26:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:04,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:09,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:09,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:26:09,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:26:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:26:09,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:09,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:26:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-15 03:26:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:26:09,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:09,760 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:09,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:09,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:09,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:09,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:09,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:26:09,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:09,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:09,787 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 03:26:09,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257233993] [2020-10-15 03:26:09,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:09,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:26:09,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384097586] [2020-10-15 03:26:09,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:09,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:09,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:09,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:09,790 INFO L87 Difference]: Start difference. First operand 8697 states and 12843 transitions. Second operand 6 states. [2020-10-15 03:26:09,966 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:26:13,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:13,112 INFO L93 Difference]: Finished difference Result 16877 states and 24991 transitions. [2020-10-15 03:26:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:26:13,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-15 03:26:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:13,125 INFO L225 Difference]: With dead ends: 16877 [2020-10-15 03:26:13,125 INFO L226 Difference]: Without dead ends: 11843 [2020-10-15 03:26:13,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:26:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2020-10-15 03:26:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 11327. [2020-10-15 03:26:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11327 states. [2020-10-15 03:26:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11327 states to 11327 states and 16804 transitions. [2020-10-15 03:26:15,653 INFO L78 Accepts]: Start accepts. Automaton has 11327 states and 16804 transitions. Word has length 88 [2020-10-15 03:26:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:15,654 INFO L479 AbstractCegarLoop]: Abstraction has 11327 states and 16804 transitions. [2020-10-15 03:26:15,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 11327 states and 16804 transitions. [2020-10-15 03:26:15,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 03:26:15,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:15,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:26:15,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:26:15,655 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:15,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:15,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1954158792, now seen corresponding path program 1 times [2020-10-15 03:26:15,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:15,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500903141] [2020-10-15 03:26:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:15,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:16,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:20,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:20,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 03:26:20,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:26:20,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4379 [2020-10-15 03:26:20,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:20,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:26:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:26:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:26:20,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:20,316 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:20,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:20,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:20,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:20,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:26:20,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:20,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:20,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:20,338 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 03:26:20,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500903141] [2020-10-15 03:26:20,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:20,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:26:20,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030119756] [2020-10-15 03:26:20,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:26:20,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:20,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:26:20,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:26:20,340 INFO L87 Difference]: Start difference. First operand 11327 states and 16804 transitions. Second operand 9 states. [2020-10-15 03:26:20,528 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:26:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:25,614 INFO L93 Difference]: Finished difference Result 27987 states and 41555 transitions. [2020-10-15 03:26:25,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:26:25,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-15 03:26:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:25,630 INFO L225 Difference]: With dead ends: 27987 [2020-10-15 03:26:25,630 INFO L226 Difference]: Without dead ends: 16863 [2020-10-15 03:26:25,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:26:25,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16863 states. [2020-10-15 03:26:28,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16863 to 11327. [2020-10-15 03:26:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11327 states. [2020-10-15 03:26:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11327 states to 11327 states and 16795 transitions. [2020-10-15 03:26:28,313 INFO L78 Accepts]: Start accepts. Automaton has 11327 states and 16795 transitions. Word has length 89 [2020-10-15 03:26:28,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:28,314 INFO L479 AbstractCegarLoop]: Abstraction has 11327 states and 16795 transitions. [2020-10-15 03:26:28,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:26:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 11327 states and 16795 transitions. [2020-10-15 03:26:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 03:26:28,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:28,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:26:28,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:26:28,316 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:28,316 INFO L82 PathProgramCache]: Analyzing trace with hash 276931584, now seen corresponding path program 1 times [2020-10-15 03:26:28,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:28,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632571417] [2020-10-15 03:26:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:28,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:28,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:28,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 03:26:28,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:26:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-15 03:26:28,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:28,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:26:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:26:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:26:28,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:28,892 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:28,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:28,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:28,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:26:28,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:28,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:26:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:26:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:28,917 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 03:26:28,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632571417] [2020-10-15 03:26:28,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:28,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:26:28,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833642174] [2020-10-15 03:26:28,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:28,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:28,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:28,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:28,919 INFO L87 Difference]: Start difference. First operand 11327 states and 16795 transitions. Second operand 6 states. [2020-10-15 03:26:29,084 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 03:26:31,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:31,724 INFO L93 Difference]: Finished difference Result 16839 states and 25069 transitions. [2020-10-15 03:26:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:26:31,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-15 03:26:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:31,734 INFO L225 Difference]: With dead ends: 16839 [2020-10-15 03:26:31,734 INFO L226 Difference]: Without dead ends: 8455 [2020-10-15 03:26:31,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:26:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8455 states. [2020-10-15 03:26:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8455 to 5699. [2020-10-15 03:26:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5699 states. [2020-10-15 03:26:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 8444 transitions. [2020-10-15 03:26:33,357 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 8444 transitions. Word has length 90 [2020-10-15 03:26:33,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:33,357 INFO L479 AbstractCegarLoop]: Abstraction has 5699 states and 8444 transitions. [2020-10-15 03:26:33,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 8444 transitions. [2020-10-15 03:26:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 03:26:33,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:33,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:26:33,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:26:33,358 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:33,359 INFO L82 PathProgramCache]: Analyzing trace with hash 64995868, now seen corresponding path program 1 times [2020-10-15 03:26:33,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:33,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068259031] [2020-10-15 03:26:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:35,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:36,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:38,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:38,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 03:26:38,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:26:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:26:38,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:38,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:26:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:26:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:26:38,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:38,542 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:38,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:38,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:38,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:38,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:26:38,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:38,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:38,570 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 03:26:38,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068259031] [2020-10-15 03:26:38,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:38,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:26:38,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792690308] [2020-10-15 03:26:38,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:38,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:38,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:38,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:38,572 INFO L87 Difference]: Start difference. First operand 5699 states and 8444 transitions. Second operand 6 states. [2020-10-15 03:26:38,751 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:26:41,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:41,683 INFO L93 Difference]: Finished difference Result 11142 states and 16528 transitions. [2020-10-15 03:26:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:26:41,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-15 03:26:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:41,692 INFO L225 Difference]: With dead ends: 11142 [2020-10-15 03:26:41,692 INFO L226 Difference]: Without dead ends: 7788 [2020-10-15 03:26:41,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:26:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7788 states. [2020-10-15 03:26:43,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7788 to 7016. [2020-10-15 03:26:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7016 states. [2020-10-15 03:26:43,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10429 transitions. [2020-10-15 03:26:43,614 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10429 transitions. Word has length 90 [2020-10-15 03:26:43,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:43,614 INFO L479 AbstractCegarLoop]: Abstraction has 7016 states and 10429 transitions. [2020-10-15 03:26:43,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:43,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10429 transitions. [2020-10-15 03:26:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 03:26:43,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:43,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:26:43,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:26:43,615 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:43,616 INFO L82 PathProgramCache]: Analyzing trace with hash -254329221, now seen corresponding path program 1 times [2020-10-15 03:26:43,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:43,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724209058] [2020-10-15 03:26:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:48,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:48,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 03:26:48,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:26:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:26:48,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:48,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:26:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:26:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:26:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:48,803 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:48,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:48,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:48,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:26:48,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:48,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:48,825 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 03:26:48,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724209058] [2020-10-15 03:26:48,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:48,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:26:48,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403926077] [2020-10-15 03:26:48,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:48,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:48,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:48,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:48,826 INFO L87 Difference]: Start difference. First operand 7016 states and 10429 transitions. Second operand 6 states. [2020-10-15 03:26:48,996 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:26:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:52,555 INFO L93 Difference]: Finished difference Result 13675 states and 20313 transitions. [2020-10-15 03:26:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:26:52,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-15 03:26:52,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:52,565 INFO L225 Difference]: With dead ends: 13675 [2020-10-15 03:26:52,565 INFO L226 Difference]: Without dead ends: 9021 [2020-10-15 03:26:52,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:26:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9021 states. [2020-10-15 03:26:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9021 to 7881. [2020-10-15 03:26:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7881 states. [2020-10-15 03:26:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7881 states to 7881 states and 11722 transitions. [2020-10-15 03:26:54,734 INFO L78 Accepts]: Start accepts. Automaton has 7881 states and 11722 transitions. Word has length 90 [2020-10-15 03:26:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:54,735 INFO L479 AbstractCegarLoop]: Abstraction has 7881 states and 11722 transitions. [2020-10-15 03:26:54,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 7881 states and 11722 transitions. [2020-10-15 03:26:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 03:26:54,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:54,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:26:54,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:26:54,736 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash -182301144, now seen corresponding path program 1 times [2020-10-15 03:26:54,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:54,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731415103] [2020-10-15 03:26:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:58,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:58,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 03:26:58,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:26:58,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3928 [2020-10-15 03:26:58,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:58,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:26:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:26:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 03:26:58,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:59,111 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:59,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:59,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:59,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:59,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:26:59,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:59,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:59,154 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 03:26:59,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731415103] [2020-10-15 03:26:59,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:59,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:26:59,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775480613] [2020-10-15 03:26:59,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:26:59,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:59,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:26:59,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:26:59,156 INFO L87 Difference]: Start difference. First operand 7881 states and 11722 transitions. Second operand 10 states. [2020-10-15 03:26:59,612 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 152 [2020-10-15 03:27:00,067 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-15 03:27:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:04,405 INFO L93 Difference]: Finished difference Result 17219 states and 25659 transitions. [2020-10-15 03:27:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:27:04,406 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-15 03:27:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:04,420 INFO L225 Difference]: With dead ends: 17219 [2020-10-15 03:27:04,421 INFO L226 Difference]: Without dead ends: 11675 [2020-10-15 03:27:04,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:27:04,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11675 states. [2020-10-15 03:27:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11675 to 7845. [2020-10-15 03:27:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7845 states. [2020-10-15 03:27:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7845 states to 7845 states and 11671 transitions. [2020-10-15 03:27:06,861 INFO L78 Accepts]: Start accepts. Automaton has 7845 states and 11671 transitions. Word has length 91 [2020-10-15 03:27:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:06,861 INFO L479 AbstractCegarLoop]: Abstraction has 7845 states and 11671 transitions. [2020-10-15 03:27:06,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:27:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 7845 states and 11671 transitions. [2020-10-15 03:27:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 03:27:06,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:06,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:27:06,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:27:06,862 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:06,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:06,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1574312521, now seen corresponding path program 1 times [2020-10-15 03:27:06,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:06,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515282019] [2020-10-15 03:27:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:07,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:08,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:11,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:11,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 03:27:11,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:27:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4174 [2020-10-15 03:27:11,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:11,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:27:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:27:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 03:27:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:11,419 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:27:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:11,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:11,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:11,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:27:11,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:11,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:27:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:27:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:11,444 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 03:27:11,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515282019] [2020-10-15 03:27:11,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:11,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:27:11,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694291828] [2020-10-15 03:27:11,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:27:11,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:11,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:27:11,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:27:11,446 INFO L87 Difference]: Start difference. First operand 7845 states and 11671 transitions. Second operand 10 states. [2020-10-15 03:27:11,617 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:27:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:14,867 INFO L93 Difference]: Finished difference Result 13347 states and 19908 transitions. [2020-10-15 03:27:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:27:14,868 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-15 03:27:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:14,875 INFO L225 Difference]: With dead ends: 13347 [2020-10-15 03:27:14,876 INFO L226 Difference]: Without dead ends: 7807 [2020-10-15 03:27:14,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:27:14,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7807 states. [2020-10-15 03:27:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7807 to 7807. [2020-10-15 03:27:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7807 states. [2020-10-15 03:27:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7807 states to 7807 states and 11624 transitions. [2020-10-15 03:27:17,318 INFO L78 Accepts]: Start accepts. Automaton has 7807 states and 11624 transitions. Word has length 91 [2020-10-15 03:27:17,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:17,318 INFO L479 AbstractCegarLoop]: Abstraction has 7807 states and 11624 transitions. [2020-10-15 03:27:17,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:27:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7807 states and 11624 transitions. [2020-10-15 03:27:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 03:27:17,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:17,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:27:17,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 03:27:17,319 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:17,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:17,319 INFO L82 PathProgramCache]: Analyzing trace with hash 919410488, now seen corresponding path program 1 times [2020-10-15 03:27:17,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:17,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078263011] [2020-10-15 03:27:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:17,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:19,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:19,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 03:27:19,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:27:19,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2488 [2020-10-15 03:27:19,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:19,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 03:27:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:27:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 03:27:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:20,614 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-10-15 03:27:20,933 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-15 03:27:21,382 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2020-10-15 03:27:21,541 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-15 03:27:21,774 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-10-15 03:27:21,956 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-15 03:27:22,192 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-15 03:27:23,163 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:27:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:23,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:23,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:23,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:27:23,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:23,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:27:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:27:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:23,260 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 03:27:23,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078263011] [2020-10-15 03:27:23,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:23,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-10-15 03:27:23,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063088432] [2020-10-15 03:27:23,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 03:27:23,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:23,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 03:27:23,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2020-10-15 03:27:23,263 INFO L87 Difference]: Start difference. First operand 7807 states and 11624 transitions. Second operand 28 states. [2020-10-15 03:27:23,820 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 166 [2020-10-15 03:27:24,931 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 276 [2020-10-15 03:27:25,782 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-15 03:27:26,025 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-15 03:27:26,335 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-10-15 03:27:26,715 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 104 [2020-10-15 03:27:27,277 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 133 [2020-10-15 03:27:27,956 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 156 [2020-10-15 03:27:28,856 WARN L193 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 179 [2020-10-15 03:27:29,967 WARN L193 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 213