/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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:45:23,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:45:23,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:45:23,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:45:23,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:45:23,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:45:23,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:45:23,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:45:23,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:45:23,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:45:23,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:45:23,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:45:23,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:45:23,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:45:23,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:45:23,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:45:23,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:45:23,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:45:23,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:45:23,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:45:23,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:45:23,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:45:23,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:45:23,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:45:23,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:45:23,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:45:23,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:45:23,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:45:23,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:45:23,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:45:23,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:45:23,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:45:23,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:45:23,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:45:23,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:45:23,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:45:23,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:45:23,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:45:23,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:45:23,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:45:23,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:45:23,371 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 03:45:23,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:45:23,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:45:23,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:45:23,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:45:23,401 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:45:23,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:45:23,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:45:23,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:45:23,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:45:23,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:45:23,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:45:23,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:45:23,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:45:23,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:45:23,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:45:23,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:45:23,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:45:23,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:45:23,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:45:23,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:45:23,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:45:23,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:45:23,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:45:23,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:45:23,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:45:23,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:45:23,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:45:23,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:45:23,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:45:23,405 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 03:45:23,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:45:23,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:45:23,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:45:23,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:45:23,716 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:45:23,717 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:45:23,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f32f42eb8/09d6cd1f8660478c859cb5ddc663c63d/FLAG90e29742b [2020-10-15 03:45:24,281 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:45:24,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:45:24,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f32f42eb8/09d6cd1f8660478c859cb5ddc663c63d/FLAG90e29742b [2020-10-15 03:45:24,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f32f42eb8/09d6cd1f8660478c859cb5ddc663c63d [2020-10-15 03:45:24,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:45:24,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:45:24,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:45:24,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:45:24,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:45:24,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:45:24" (1/1) ... [2020-10-15 03:45:24,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f389357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:24, skipping insertion in model container [2020-10-15 03:45:24,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:45:24" (1/1) ... [2020-10-15 03:45:24,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:45:24,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:45:25,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:45:25,067 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:45:25,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:45:25,321 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:45:25,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25 WrapperNode [2020-10-15 03:45:25,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:45:25,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:45:25,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:45:25,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:45:25,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25" (1/1) ... [2020-10-15 03:45:25,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25" (1/1) ... [2020-10-15 03:45:25,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25" (1/1) ... [2020-10-15 03:45:25,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25" (1/1) ... [2020-10-15 03:45:25,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25" (1/1) ... [2020-10-15 03:45:25,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25" (1/1) ... [2020-10-15 03:45:25,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25" (1/1) ... [2020-10-15 03:45:25,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:45:25,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:45:25,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:45:25,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:45:25,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25" (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 03:45:25,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:45:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:45:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:45:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:45:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:45:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:45:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:45:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:45:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:45:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:45:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:45:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:45:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:45:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:45:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:45:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:45:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:45:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:45:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:45:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:45:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:45:26,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:45:26,234 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:45:26,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:45:26 BoogieIcfgContainer [2020-10-15 03:45:26,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:45:26,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:45:26,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:45:26,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:45:26,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:45:24" (1/3) ... [2020-10-15 03:45:26,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e0266e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:45:26, skipping insertion in model container [2020-10-15 03:45:26,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:45:25" (2/3) ... [2020-10-15 03:45:26,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e0266e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:45:26, skipping insertion in model container [2020-10-15 03:45:26,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:45:26" (3/3) ... [2020-10-15 03:45:26,247 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:45:26,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:45:26,266 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:45:26,280 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:45:26,306 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:45:26,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:45:26,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:45:26,307 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:45:26,307 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:45:26,308 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:45:26,308 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:45:26,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:45:26,330 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-10-15 03:45:26,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:45:26,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:26,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:26,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:26,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1299417404, now seen corresponding path program 1 times [2020-10-15 03:45:26,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:26,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758045185] [2020-10-15 03:45:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:27,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:28,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:28,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:45:28,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:45:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-10-15 03:45:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:28,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:45:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:45:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:45:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:45:28,724 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:45:28,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:28,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:28,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:28,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:28,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:45:28,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:28,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:28,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:28,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:28,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:28,766 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 03:45:28,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758045185] [2020-10-15 03:45:28,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:28,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:45:28,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164153200] [2020-10-15 03:45:28,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:45:28,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:45:28,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:45:28,792 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 7 states. [2020-10-15 03:45:29,018 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 03:45:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:29,921 INFO L93 Difference]: Finished difference Result 650 states and 1046 transitions. [2020-10-15 03:45:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:45:29,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-15 03:45:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:29,943 INFO L225 Difference]: With dead ends: 650 [2020-10-15 03:45:29,944 INFO L226 Difference]: Without dead ends: 545 [2020-10-15 03:45:29,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:45:29,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-10-15 03:45:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 279. [2020-10-15 03:45:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-15 03:45:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 416 transitions. [2020-10-15 03:45:30,023 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 416 transitions. Word has length 69 [2020-10-15 03:45:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:30,023 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 416 transitions. [2020-10-15 03:45:30,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:45:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 416 transitions. [2020-10-15 03:45:30,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:45:30,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:30,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:30,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:45:30,027 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:30,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:30,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1350115301, now seen corresponding path program 1 times [2020-10-15 03:45:30,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:30,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618564447] [2020-10-15 03:45:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:30,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:30,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:30,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:45:30,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:45:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-15 03:45:30,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:30,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:45:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:45:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:45:30,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:31,187 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:45:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:31,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:31,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:31,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:45:31,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:31,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:31,261 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 03:45:31,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618564447] [2020-10-15 03:45:31,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:31,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:45:31,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970799155] [2020-10-15 03:45:31,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:45:31,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:31,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:45:31,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:45:31,266 INFO L87 Difference]: Start difference. First operand 279 states and 416 transitions. Second operand 7 states. [2020-10-15 03:45:32,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:32,067 INFO L93 Difference]: Finished difference Result 1017 states and 1560 transitions. [2020-10-15 03:45:32,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:45:32,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-15 03:45:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:32,073 INFO L225 Difference]: With dead ends: 1017 [2020-10-15 03:45:32,073 INFO L226 Difference]: Without dead ends: 805 [2020-10-15 03:45:32,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:45:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-15 03:45:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 799. [2020-10-15 03:45:32,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2020-10-15 03:45:32,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1215 transitions. [2020-10-15 03:45:32,132 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1215 transitions. Word has length 70 [2020-10-15 03:45:32,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:32,132 INFO L479 AbstractCegarLoop]: Abstraction has 799 states and 1215 transitions. [2020-10-15 03:45:32,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:45:32,133 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1215 transitions. [2020-10-15 03:45:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:45:32,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:32,137 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] [2020-10-15 03:45:32,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:45:32,137 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:32,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1026057547, now seen corresponding path program 1 times [2020-10-15 03:45:32,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:32,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053377327] [2020-10-15 03:45:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:32,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:32,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:32,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:45:32,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:45:32,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-15 03:45:32,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:32,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:45:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:45:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:32,869 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:45:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:32,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:32,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:32,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:45:32,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:32,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:45:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:32,939 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 03:45:32,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053377327] [2020-10-15 03:45:32,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:32,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:45:32,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909573583] [2020-10-15 03:45:32,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:32,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:32,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:32,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:32,943 INFO L87 Difference]: Start difference. First operand 799 states and 1215 transitions. Second operand 6 states. [2020-10-15 03:45:33,159 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:33,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:33,970 INFO L93 Difference]: Finished difference Result 2015 states and 3107 transitions. [2020-10-15 03:45:33,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:45:33,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:45:33,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:33,978 INFO L225 Difference]: With dead ends: 2015 [2020-10-15 03:45:33,978 INFO L226 Difference]: Without dead ends: 1321 [2020-10-15 03:45:33,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-15 03:45:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1319. [2020-10-15 03:45:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-15 03:45:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2015 transitions. [2020-10-15 03:45:34,070 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2015 transitions. Word has length 71 [2020-10-15 03:45:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:34,071 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 2015 transitions. [2020-10-15 03:45:34,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:45:34,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2015 transitions. [2020-10-15 03:45:34,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:45:34,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:34,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:34,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:45:34,074 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:34,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:34,075 INFO L82 PathProgramCache]: Analyzing trace with hash -679908380, now seen corresponding path program 1 times [2020-10-15 03:45:34,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:34,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049354109] [2020-10-15 03:45:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:34,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:45:34,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:45:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-15 03:45:34,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:34,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:45:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:45:34,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:34,932 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:45:34,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:34,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:34,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:45:34,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:34,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:45:34,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:34,994 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 03:45:34,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049354109] [2020-10-15 03:45:34,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:34,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:45:34,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997516231] [2020-10-15 03:45:34,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:34,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:34,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:34,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:34,997 INFO L87 Difference]: Start difference. First operand 1319 states and 2015 transitions. Second operand 6 states. [2020-10-15 03:45:35,210 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:36,276 INFO L93 Difference]: Finished difference Result 3626 states and 5578 transitions. [2020-10-15 03:45:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:45:36,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:45:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:36,292 INFO L225 Difference]: With dead ends: 3626 [2020-10-15 03:45:36,293 INFO L226 Difference]: Without dead ends: 2385 [2020-10-15 03:45:36,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2020-10-15 03:45:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2383. [2020-10-15 03:45:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2383 states. [2020-10-15 03:45:36,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 3637 transitions. [2020-10-15 03:45:36,513 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 3637 transitions. Word has length 71 [2020-10-15 03:45:36,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:36,514 INFO L479 AbstractCegarLoop]: Abstraction has 2383 states and 3637 transitions. [2020-10-15 03:45:36,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:45:36,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 3637 transitions. [2020-10-15 03:45:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:45:36,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:36,516 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] [2020-10-15 03:45:36,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:45:36,517 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:36,517 INFO L82 PathProgramCache]: Analyzing trace with hash -474937069, now seen corresponding path program 1 times [2020-10-15 03:45:36,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:36,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014550064] [2020-10-15 03:45:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:36,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:37,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:37,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:45:37,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:45:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-15 03:45:37,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:37,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:45:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:45:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:37,216 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:45:37,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:37,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:37,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:37,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:37,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:45:37,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:37,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:45:37,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:37,265 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 03:45:37,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014550064] [2020-10-15 03:45:37,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:37,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:45:37,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401094188] [2020-10-15 03:45:37,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:37,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:37,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:37,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:37,268 INFO L87 Difference]: Start difference. First operand 2383 states and 3637 transitions. Second operand 6 states. [2020-10-15 03:45:37,409 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:38,392 INFO L93 Difference]: Finished difference Result 6853 states and 10489 transitions. [2020-10-15 03:45:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:45:38,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:45:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:38,418 INFO L225 Difference]: With dead ends: 6853 [2020-10-15 03:45:38,418 INFO L226 Difference]: Without dead ends: 4525 [2020-10-15 03:45:38,423 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 03:45:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2020-10-15 03:45:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 4523. [2020-10-15 03:45:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4523 states. [2020-10-15 03:45:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 6866 transitions. [2020-10-15 03:45:38,726 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 6866 transitions. Word has length 71 [2020-10-15 03:45:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:38,727 INFO L479 AbstractCegarLoop]: Abstraction has 4523 states and 6866 transitions. [2020-10-15 03:45:38,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:45:38,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 6866 transitions. [2020-10-15 03:45:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:45:38,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:38,730 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] [2020-10-15 03:45:38,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:45:38,731 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:38,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1749987906, now seen corresponding path program 1 times [2020-10-15 03:45:38,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:38,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689171513] [2020-10-15 03:45:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:38,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:39,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:39,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:45:39,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:45:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-15 03:45:39,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:39,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:45:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:45:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:39,484 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:45:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:39,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:39,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:39,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:39,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:45:39,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:39,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:45:39,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:39,539 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 03:45:39,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689171513] [2020-10-15 03:45:39,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:39,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:45:39,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405661840] [2020-10-15 03:45:39,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:39,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:39,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:39,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:39,542 INFO L87 Difference]: Start difference. First operand 4523 states and 6866 transitions. Second operand 6 states. [2020-10-15 03:45:39,696 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:41,407 INFO L93 Difference]: Finished difference Result 13174 states and 20006 transitions. [2020-10-15 03:45:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:45:41,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:45:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:41,448 INFO L225 Difference]: With dead ends: 13174 [2020-10-15 03:45:41,449 INFO L226 Difference]: Without dead ends: 8690 [2020-10-15 03:45:41,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8690 states. [2020-10-15 03:45:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8690 to 8688. [2020-10-15 03:45:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8688 states. [2020-10-15 03:45:42,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 13068 transitions. [2020-10-15 03:45:42,060 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 13068 transitions. Word has length 71 [2020-10-15 03:45:42,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:42,061 INFO L479 AbstractCegarLoop]: Abstraction has 8688 states and 13068 transitions. [2020-10-15 03:45:42,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:45:42,062 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 13068 transitions. [2020-10-15 03:45:42,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:45:42,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:42,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:42,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:45:42,065 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:42,066 INFO L82 PathProgramCache]: Analyzing trace with hash -393483888, now seen corresponding path program 1 times [2020-10-15 03:45:42,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:42,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285752791] [2020-10-15 03:45:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:42,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:44,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:44,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:45:44,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:45:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2218 [2020-10-15 03:45:44,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:44,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:45:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:45:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:44,674 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:45:44,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:44,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:44,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:44,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:45:44,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:44,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:44,717 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 03:45:44,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285752791] [2020-10-15 03:45:44,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:44,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:45:44,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881344582] [2020-10-15 03:45:44,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:45:44,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:44,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:45:44,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:45:44,719 INFO L87 Difference]: Start difference. First operand 8688 states and 13068 transitions. Second operand 9 states. [2020-10-15 03:45:44,888 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:45:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:48,958 INFO L93 Difference]: Finished difference Result 38933 states and 58576 transitions. [2020-10-15 03:45:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:45:48,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:45:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:49,067 INFO L225 Difference]: With dead ends: 38933 [2020-10-15 03:45:49,067 INFO L226 Difference]: Without dead ends: 36594 [2020-10-15 03:45:49,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:45:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36594 states. [2020-10-15 03:45:50,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36594 to 8662. [2020-10-15 03:45:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2020-10-15 03:45:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 13027 transitions. [2020-10-15 03:45:50,111 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 13027 transitions. Word has length 72 [2020-10-15 03:45:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:50,111 INFO L479 AbstractCegarLoop]: Abstraction has 8662 states and 13027 transitions. [2020-10-15 03:45:50,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:45:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 13027 transitions. [2020-10-15 03:45:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:45:50,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:50,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:50,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:45:50,116 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:50,116 INFO L82 PathProgramCache]: Analyzing trace with hash -924827152, now seen corresponding path program 1 times [2020-10-15 03:45:50,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:50,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705014091] [2020-10-15 03:45:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:51,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:51,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:45:51,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:45:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-15 03:45:51,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:51,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:45:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:45:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:45:51,893 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:45:51,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:51,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:51,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:51,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:51,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:51,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:45:51,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:51,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:51,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:51,940 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 03:45:51,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705014091] [2020-10-15 03:45:51,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:51,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:45:51,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894039162] [2020-10-15 03:45:51,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:45:51,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:51,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:45:51,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:45:51,944 INFO L87 Difference]: Start difference. First operand 8662 states and 13027 transitions. Second operand 9 states. [2020-10-15 03:45:52,196 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:45:52,732 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-10-15 03:45:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:57,209 INFO L93 Difference]: Finished difference Result 44203 states and 66502 transitions. [2020-10-15 03:45:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:45:57,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:45:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:57,314 INFO L225 Difference]: With dead ends: 44203 [2020-10-15 03:45:57,314 INFO L226 Difference]: Without dead ends: 39837 [2020-10-15 03:45:57,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:45:57,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39837 states. [2020-10-15 03:45:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39837 to 8824. [2020-10-15 03:45:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8824 states. [2020-10-15 03:45:58,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8824 states to 8824 states and 13239 transitions. [2020-10-15 03:45:58,495 INFO L78 Accepts]: Start accepts. Automaton has 8824 states and 13239 transitions. Word has length 72 [2020-10-15 03:45:58,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:58,496 INFO L479 AbstractCegarLoop]: Abstraction has 8824 states and 13239 transitions. [2020-10-15 03:45:58,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:45:58,496 INFO L276 IsEmpty]: Start isEmpty. Operand 8824 states and 13239 transitions. [2020-10-15 03:45:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:45:58,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:58,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:58,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:45:58,500 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:58,501 INFO L82 PathProgramCache]: Analyzing trace with hash -963585456, now seen corresponding path program 1 times [2020-10-15 03:45:58,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:58,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013833598] [2020-10-15 03:45:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:58,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:58,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:00,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:00,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:46:00,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:46:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1679 [2020-10-15 03:46:00,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:00,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:46:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:46:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:46:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:00,484 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:46:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:00,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:00,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:00,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:00,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:46:00,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:00,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:00,529 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 03:46:00,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013833598] [2020-10-15 03:46:00,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:00,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:46:00,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706643787] [2020-10-15 03:46:00,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:46:00,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:00,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:46:00,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:46:00,532 INFO L87 Difference]: Start difference. First operand 8824 states and 13239 transitions. Second operand 9 states. [2020-10-15 03:46:00,706 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:46:07,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:07,368 INFO L93 Difference]: Finished difference Result 49868 states and 74879 transitions. [2020-10-15 03:46:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:46:07,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:46:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:07,450 INFO L225 Difference]: With dead ends: 49868 [2020-10-15 03:46:07,450 INFO L226 Difference]: Without dead ends: 43473 [2020-10-15 03:46:07,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:46:07,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43473 states. [2020-10-15 03:46:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43473 to 8997. [2020-10-15 03:46:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-10-15 03:46:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 13458 transitions. [2020-10-15 03:46:08,587 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 13458 transitions. Word has length 72 [2020-10-15 03:46:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:08,587 INFO L479 AbstractCegarLoop]: Abstraction has 8997 states and 13458 transitions. [2020-10-15 03:46:08,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:46:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 13458 transitions. [2020-10-15 03:46:08,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:46:08,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:08,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:08,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:46:08,591 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:08,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:08,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1816507056, now seen corresponding path program 1 times [2020-10-15 03:46:08,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:08,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444506101] [2020-10-15 03:46:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:08,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:10,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:10,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:46:10,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:46:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-15 03:46:10,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:10,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:46:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:46:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:46:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:10,372 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:46:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:10,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:10,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:10,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:46:10,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:10,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:10,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:46:10,422 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 03:46:10,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444506101] [2020-10-15 03:46:10,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:10,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:46:10,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662112724] [2020-10-15 03:46:10,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:46:10,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:10,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:46:10,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:46:10,425 INFO L87 Difference]: Start difference. First operand 8997 states and 13458 transitions. Second operand 9 states. [2020-10-15 03:46:10,687 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:46:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:18,516 INFO L93 Difference]: Finished difference Result 48025 states and 71874 transitions. [2020-10-15 03:46:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:46:18,517 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:46:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:18,598 INFO L225 Difference]: With dead ends: 48025 [2020-10-15 03:46:18,599 INFO L226 Difference]: Without dead ends: 39768 [2020-10-15 03:46:18,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:46:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39768 states. [2020-10-15 03:46:20,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39768 to 9119. [2020-10-15 03:46:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9119 states. [2020-10-15 03:46:20,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9119 states to 9119 states and 13590 transitions. [2020-10-15 03:46:20,641 INFO L78 Accepts]: Start accepts. Automaton has 9119 states and 13590 transitions. Word has length 72 [2020-10-15 03:46:20,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:20,641 INFO L479 AbstractCegarLoop]: Abstraction has 9119 states and 13590 transitions. [2020-10-15 03:46:20,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:46:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 9119 states and 13590 transitions. [2020-10-15 03:46:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:46:20,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:20,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:20,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:46:20,646 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:20,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:20,646 INFO L82 PathProgramCache]: Analyzing trace with hash 249417697, now seen corresponding path program 1 times [2020-10-15 03:46:20,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:20,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076681972] [2020-10-15 03:46:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:20,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:20,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:20,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:46:20,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:20,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-15 03:46:20,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:20,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:46:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 03:46:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:46:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:20,954 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:46:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:20,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:20,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:20,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:46:20,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:20,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:20,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:46:20,991 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 03:46:20,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076681972] [2020-10-15 03:46:20,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:20,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:46:20,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593522397] [2020-10-15 03:46:20,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:46:20,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:20,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:46:20,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:46:20,995 INFO L87 Difference]: Start difference. First operand 9119 states and 13590 transitions. Second operand 5 states. [2020-10-15 03:46:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:24,195 INFO L93 Difference]: Finished difference Result 17345 states and 25911 transitions. [2020-10-15 03:46:24,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:46:24,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 03:46:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:24,238 INFO L225 Difference]: With dead ends: 17345 [2020-10-15 03:46:24,239 INFO L226 Difference]: Without dead ends: 17343 [2020-10-15 03:46:24,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:46:24,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17343 states. [2020-10-15 03:46:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17343 to 9375. [2020-10-15 03:46:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9375 states. [2020-10-15 03:46:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9375 states to 9375 states and 13846 transitions. [2020-10-15 03:46:25,542 INFO L78 Accepts]: Start accepts. Automaton has 9375 states and 13846 transitions. Word has length 73 [2020-10-15 03:46:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:25,542 INFO L479 AbstractCegarLoop]: Abstraction has 9375 states and 13846 transitions. [2020-10-15 03:46:25,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:46:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9375 states and 13846 transitions. [2020-10-15 03:46:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:46:25,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:25,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:25,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:46:25,546 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:25,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:25,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1893937802, now seen corresponding path program 1 times [2020-10-15 03:46:25,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:25,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389845692] [2020-10-15 03:46:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:46:27,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:46:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-10-15 03:46:27,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:27,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:46:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:46:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:46:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:46:27,579 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:46:27,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:27,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:27,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:27,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:46:27,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:27,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:46:27,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389845692] [2020-10-15 03:46:27,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:27,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:46:27,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550342520] [2020-10-15 03:46:27,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:46:27,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:27,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:46:27,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:46:27,611 INFO L87 Difference]: Start difference. First operand 9375 states and 13846 transitions. Second operand 7 states. [2020-10-15 03:46:27,806 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:46:31,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:31,635 INFO L93 Difference]: Finished difference Result 26488 states and 39637 transitions. [2020-10-15 03:46:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:46:31,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:46:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:31,669 INFO L225 Difference]: With dead ends: 26488 [2020-10-15 03:46:31,670 INFO L226 Difference]: Without dead ends: 22374 [2020-10-15 03:46:31,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:46:31,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22374 states. [2020-10-15 03:46:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22374 to 15724. [2020-10-15 03:46:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15724 states. [2020-10-15 03:46:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15724 states to 15724 states and 23318 transitions. [2020-10-15 03:46:33,942 INFO L78 Accepts]: Start accepts. Automaton has 15724 states and 23318 transitions. Word has length 74 [2020-10-15 03:46:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:33,943 INFO L479 AbstractCegarLoop]: Abstraction has 15724 states and 23318 transitions. [2020-10-15 03:46:33,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:46:33,943 INFO L276 IsEmpty]: Start isEmpty. Operand 15724 states and 23318 transitions. [2020-10-15 03:46:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:46:33,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:33,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:33,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:46:33,948 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:33,948 INFO L82 PathProgramCache]: Analyzing trace with hash -581438809, now seen corresponding path program 1 times [2020-10-15 03:46:33,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:33,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330585876] [2020-10-15 03:46:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:34,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:34,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:46:34,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:34,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-15 03:46:34,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:34,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:46:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:46:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:46:34,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:34,266 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:46:34,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:34,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:34,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:34,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:34,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:46:34,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:34,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:34,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:46:34,315 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 03:46:34,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330585876] [2020-10-15 03:46:34,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:34,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:46:34,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231626417] [2020-10-15 03:46:34,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:46:34,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:34,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:46:34,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:46:34,319 INFO L87 Difference]: Start difference. First operand 15724 states and 23318 transitions. Second operand 5 states. [2020-10-15 03:46:34,478 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 03:46:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:39,157 INFO L93 Difference]: Finished difference Result 41236 states and 61180 transitions. [2020-10-15 03:46:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:46:39,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-15 03:46:39,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:39,190 INFO L225 Difference]: With dead ends: 41236 [2020-10-15 03:46:39,191 INFO L226 Difference]: Without dead ends: 26770 [2020-10-15 03:46:39,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:46:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26770 states. [2020-10-15 03:46:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26770 to 26768. [2020-10-15 03:46:43,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26768 states. [2020-10-15 03:46:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26768 states to 26768 states and 39386 transitions. [2020-10-15 03:46:43,169 INFO L78 Accepts]: Start accepts. Automaton has 26768 states and 39386 transitions. Word has length 74 [2020-10-15 03:46:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:43,169 INFO L479 AbstractCegarLoop]: Abstraction has 26768 states and 39386 transitions. [2020-10-15 03:46:43,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:46:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 26768 states and 39386 transitions. [2020-10-15 03:46:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:46:43,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:43,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:43,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:46:43,174 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:43,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1148287064, now seen corresponding path program 1 times [2020-10-15 03:46:43,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:43,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222343381] [2020-10-15 03:46:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:45,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:45,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:46:45,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:46:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-10-15 03:46:45,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:45,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:46:45,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:46:45,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:46:45,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:46:45,235 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:46:45,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:45,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:45,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:45,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:45,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:45,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:46:45,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:45,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:46:45,267 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 03:46:45,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222343381] [2020-10-15 03:46:45,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:45,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:46:45,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470446229] [2020-10-15 03:46:45,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:46:45,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:45,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:46:45,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:46:45,269 INFO L87 Difference]: Start difference. First operand 26768 states and 39386 transitions. Second operand 7 states. [2020-10-15 03:46:45,434 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:46:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:53,723 INFO L93 Difference]: Finished difference Result 53703 states and 79195 transitions. [2020-10-15 03:46:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:46:53,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:46:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:53,774 INFO L225 Difference]: With dead ends: 53703 [2020-10-15 03:46:53,775 INFO L226 Difference]: Without dead ends: 49397 [2020-10-15 03:46:53,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:46:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49397 states. [2020-10-15 03:46:58,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49397 to 28967. [2020-10-15 03:46:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28967 states. [2020-10-15 03:46:58,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28967 states to 28967 states and 42593 transitions. [2020-10-15 03:46:58,158 INFO L78 Accepts]: Start accepts. Automaton has 28967 states and 42593 transitions. Word has length 74 [2020-10-15 03:46:58,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:58,158 INFO L479 AbstractCegarLoop]: Abstraction has 28967 states and 42593 transitions. [2020-10-15 03:46:58,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:46:58,159 INFO L276 IsEmpty]: Start isEmpty. Operand 28967 states and 42593 transitions. [2020-10-15 03:46:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:46:58,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:58,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:58,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:46:58,162 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:58,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:58,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1532926198, now seen corresponding path program 1 times [2020-10-15 03:46:58,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:58,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171865281] [2020-10-15 03:46:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:58,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:59,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:59,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:46:59,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:46:59,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1574 [2020-10-15 03:46:59,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:59,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:46:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:46:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:46:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:59,914 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:46:59,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:59,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:59,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:59,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:46:59,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:59,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:59,942 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 03:46:59,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171865281] [2020-10-15 03:46:59,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:59,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:46:59,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697471194] [2020-10-15 03:46:59,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:46:59,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:59,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:46:59,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:46:59,944 INFO L87 Difference]: Start difference. First operand 28967 states and 42593 transitions. Second operand 7 states. [2020-10-15 03:47:00,112 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:47:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:08,367 INFO L93 Difference]: Finished difference Result 58939 states and 86799 transitions. [2020-10-15 03:47:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:47:08,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:47:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:08,419 INFO L225 Difference]: With dead ends: 58939 [2020-10-15 03:47:08,420 INFO L226 Difference]: Without dead ends: 50681 [2020-10-15 03:47:08,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:47:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50681 states. [2020-10-15 03:47:14,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50681 to 33222. [2020-10-15 03:47:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33222 states. [2020-10-15 03:47:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33222 states to 33222 states and 48845 transitions. [2020-10-15 03:47:14,546 INFO L78 Accepts]: Start accepts. Automaton has 33222 states and 48845 transitions. Word has length 74 [2020-10-15 03:47:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:14,546 INFO L479 AbstractCegarLoop]: Abstraction has 33222 states and 48845 transitions. [2020-10-15 03:47:14,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:47:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 33222 states and 48845 transitions. [2020-10-15 03:47:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:47:14,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:14,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:47:14,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:47:14,550 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:14,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:14,550 INFO L82 PathProgramCache]: Analyzing trace with hash -926563288, now seen corresponding path program 1 times [2020-10-15 03:47:14,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:14,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614764433] [2020-10-15 03:47:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:14,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:14,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:47:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:47:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-15 03:47:15,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:15,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:47:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:47:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:47:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:16,026 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:16,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:16,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:16,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:47:16,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:16,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:16,052 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 03:47:16,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614764433] [2020-10-15 03:47:16,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:16,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:47:16,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499453368] [2020-10-15 03:47:16,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:47:16,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:16,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:47:16,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:47:16,054 INFO L87 Difference]: Start difference. First operand 33222 states and 48845 transitions. Second operand 7 states. [2020-10-15 03:47:16,221 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:47:25,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:25,806 INFO L93 Difference]: Finished difference Result 67854 states and 99867 transitions. [2020-10-15 03:47:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:47:25,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:47:25,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:25,864 INFO L225 Difference]: With dead ends: 67854 [2020-10-15 03:47:25,865 INFO L226 Difference]: Without dead ends: 55996 [2020-10-15 03:47:25,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:47:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55996 states. [2020-10-15 03:47:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55996 to 38519. [2020-10-15 03:47:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38519 states. [2020-10-15 03:47:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38519 states to 38519 states and 56631 transitions. [2020-10-15 03:47:32,287 INFO L78 Accepts]: Start accepts. Automaton has 38519 states and 56631 transitions. Word has length 74 [2020-10-15 03:47:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:32,288 INFO L479 AbstractCegarLoop]: Abstraction has 38519 states and 56631 transitions. [2020-10-15 03:47:32,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:47:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 38519 states and 56631 transitions. [2020-10-15 03:47:32,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:47:32,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:32,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:47:32,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:47:32,292 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:32,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2140072015, now seen corresponding path program 1 times [2020-10-15 03:47:32,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:32,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305375633] [2020-10-15 03:47:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:33,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:33,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:34,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:35,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:36,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:36,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:47:36,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:47:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3971 [2020-10-15 03:47:36,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:36,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:47:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:47:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:47:36,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:36,519 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:36,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:36,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:36,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:36,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:47:36,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:36,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:47:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:47:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:36,551 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 03:47:36,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305375633] [2020-10-15 03:47:36,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:36,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:47:36,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624358727] [2020-10-15 03:47:36,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:47:36,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:36,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:47:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:47:36,553 INFO L87 Difference]: Start difference. First operand 38519 states and 56631 transitions. Second operand 8 states. [2020-10-15 03:47:36,701 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:48:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:08,009 INFO L93 Difference]: Finished difference Result 211008 states and 307815 transitions. [2020-10-15 03:48:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:48:08,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-10-15 03:48:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:48:08,222 INFO L225 Difference]: With dead ends: 211008 [2020-10-15 03:48:08,223 INFO L226 Difference]: Without dead ends: 173662 [2020-10-15 03:48:08,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:48:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173662 states. [2020-10-15 03:48:17,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173662 to 38663. [2020-10-15 03:48:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38663 states. [2020-10-15 03:48:17,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38663 states to 38663 states and 56509 transitions. [2020-10-15 03:48:17,400 INFO L78 Accepts]: Start accepts. Automaton has 38663 states and 56509 transitions. Word has length 77 [2020-10-15 03:48:17,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:48:17,401 INFO L479 AbstractCegarLoop]: Abstraction has 38663 states and 56509 transitions. [2020-10-15 03:48:17,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:48:17,401 INFO L276 IsEmpty]: Start isEmpty. Operand 38663 states and 56509 transitions. [2020-10-15 03:48:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:48:17,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:17,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:48:17,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:48:17,405 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:17,405 INFO L82 PathProgramCache]: Analyzing trace with hash 347457361, now seen corresponding path program 1 times [2020-10-15 03:48:17,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:17,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373909792] [2020-10-15 03:48:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:17,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:17,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:20,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:20,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:48:20,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:48:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3572 [2020-10-15 03:48:20,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:20,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:48:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:48:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 03:48:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:48:21,228 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:48:21,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:48:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:21,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:21,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:21,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:48:21,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:48:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:48:21,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:21,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:48:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:48:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:48:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:48:21,265 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 03:48:21,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373909792] [2020-10-15 03:48:21,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:48:21,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:48:21,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228791685] [2020-10-15 03:48:21,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:48:21,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:48:21,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:48:21,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:48:21,267 INFO L87 Difference]: Start difference. First operand 38663 states and 56509 transitions. Second operand 8 states. [2020-10-15 03:48:21,409 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:48:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:59,867 INFO L93 Difference]: Finished difference Result 239539 states and 348217 transitions. [2020-10-15 03:48:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:48:59,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-10-15 03:48:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:00,148 INFO L225 Difference]: With dead ends: 239539 [2020-10-15 03:49:00,149 INFO L226 Difference]: Without dead ends: 201999 [2020-10-15 03:49:00,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:49:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201999 states. [2020-10-15 03:49:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201999 to 38623. [2020-10-15 03:49:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38623 states. [2020-10-15 03:49:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38623 states to 38623 states and 56075 transitions. [2020-10-15 03:49:10,634 INFO L78 Accepts]: Start accepts. Automaton has 38623 states and 56075 transitions. Word has length 77 [2020-10-15 03:49:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:10,634 INFO L479 AbstractCegarLoop]: Abstraction has 38623 states and 56075 transitions. [2020-10-15 03:49:10,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:49:10,634 INFO L276 IsEmpty]: Start isEmpty. Operand 38623 states and 56075 transitions. [2020-10-15 03:49:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:49:10,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:10,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:10,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:49:10,639 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:10,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:10,639 INFO L82 PathProgramCache]: Analyzing trace with hash 754574351, now seen corresponding path program 1 times [2020-10-15 03:49:10,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:10,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982910095] [2020-10-15 03:49:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:10,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking...