/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:33:53,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:33:53,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:33:53,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:33:53,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:33:53,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:33:53,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:33:53,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:33:53,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:33:53,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:33:53,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:33:53,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:33:53,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:33:53,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:33:53,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:33:53,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:33:53,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:33:53,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:33:53,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:33:53,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:33:53,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:33:53,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:33:53,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:33:53,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:33:53,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:33:53,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:33:53,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:33:53,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:33:53,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:33:53,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:33:53,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:33:53,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:33:53,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:33:53,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:33:53,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:33:53,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:33:53,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:33:53,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:33:53,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:33:53,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:33:53,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:33:53,217 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 [2020-10-28 18:33:53,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:33:53,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:33:53,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:33:53,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:33:53,279 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:33:53,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:33:53,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:33:53,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:33:53,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:33:53,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:33:53,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:33:53,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:33:53,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:33:53,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:33:53,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:33:53,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:33:53,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:33:53,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:33:53,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:33:53,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:33:53,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:33:53,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:33:53,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:33:53,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:33:53,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:33:53,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:33:53,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:33:53,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:33:53,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:33:53,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:33:53,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:33:53,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:33:53,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:33:53,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:33:53,749 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:33:53,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:33:53,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7127dbda4/acb924e678e44b5b89981e9165803a6e/FLAGdb172c43e [2020-10-28 18:33:54,528 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:33:54,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:33:54,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7127dbda4/acb924e678e44b5b89981e9165803a6e/FLAGdb172c43e [2020-10-28 18:33:54,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7127dbda4/acb924e678e44b5b89981e9165803a6e [2020-10-28 18:33:54,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:33:54,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:33:54,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:33:54,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:33:54,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:33:54,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:33:54" (1/1) ... [2020-10-28 18:33:54,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fede82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:54, skipping insertion in model container [2020-10-28 18:33:54,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:33:54" (1/1) ... [2020-10-28 18:33:54,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:33:54,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:33:55,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:33:55,430 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:33:55,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:33:55,535 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:33:55,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55 WrapperNode [2020-10-28 18:33:55,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:33:55,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:33:55,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:33:55,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:33:55,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55" (1/1) ... [2020-10-28 18:33:55,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55" (1/1) ... [2020-10-28 18:33:55,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55" (1/1) ... [2020-10-28 18:33:55,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55" (1/1) ... [2020-10-28 18:33:55,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55" (1/1) ... [2020-10-28 18:33:55,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55" (1/1) ... [2020-10-28 18:33:55,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55" (1/1) ... [2020-10-28 18:33:55,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:33:55,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:33:55,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:33:55,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:33:55,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55" (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 [2020-10-28 18:33:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:33:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:33:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:33:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:33:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:33:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:33:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:33:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:33:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:33:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:33:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:33:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:33:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:33:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:33:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:33:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:33:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:33:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:33:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:33:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:33:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:33:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:33:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:33:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:33:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:33:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:33:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:33:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:33:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:33:56,887 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:33:56,888 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:33:56,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:33:56 BoogieIcfgContainer [2020-10-28 18:33:56,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:33:56,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:33:56,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:33:56,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:33:56,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:33:54" (1/3) ... [2020-10-28 18:33:56,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7fe447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:33:56, skipping insertion in model container [2020-10-28 18:33:56,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:33:55" (2/3) ... [2020-10-28 18:33:56,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7fe447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:33:56, skipping insertion in model container [2020-10-28 18:33:56,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:33:56" (3/3) ... [2020-10-28 18:33:56,899 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:33:56,911 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:33:56,917 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:33:56,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:33:56,959 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:33:56,960 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:33:56,960 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:33:56,960 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:33:56,960 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:33:56,960 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:33:56,960 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:33:56,960 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:33:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-10-28 18:33:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 18:33:56,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:33:56,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:33:56,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:33:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:33:57,001 INFO L82 PathProgramCache]: Analyzing trace with hash 350764180, now seen corresponding path program 1 times [2020-10-28 18:33:57,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:33:57,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323967032] [2020-10-28 18:33:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:33:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:33:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:33:57,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:33:57,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:33:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:33:58,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:33:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:33:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:33:59,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:33:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:02,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:02,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 18:34:02,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:34:02,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:34:02,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:02,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:34:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 18:34:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 18:34:02,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:34:02,850 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:34:02,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:34:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:02,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:02,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:34:02,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:34:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 18:34:02,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:02,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:34:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:34:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:34:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:34:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:34:03,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323967032] [2020-10-28 18:34:03,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:34:03,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:34:03,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935436138] [2020-10-28 18:34:03,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:34:03,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:34:03,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:34:03,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:34:03,071 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 4 states. [2020-10-28 18:34:03,537 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:34:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:34:04,736 INFO L93 Difference]: Finished difference Result 258 states and 416 transitions. [2020-10-28 18:34:04,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:34:04,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-28 18:34:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:34:04,751 INFO L225 Difference]: With dead ends: 258 [2020-10-28 18:34:04,751 INFO L226 Difference]: Without dead ends: 190 [2020-10-28 18:34:04,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:34:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-28 18:34:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2020-10-28 18:34:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-28 18:34:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 268 transitions. [2020-10-28 18:34:04,824 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 268 transitions. Word has length 66 [2020-10-28 18:34:04,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:34:04,826 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 268 transitions. [2020-10-28 18:34:04,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:34:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 268 transitions. [2020-10-28 18:34:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 18:34:04,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:34:04,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:34:04,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:34:04,830 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:34:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:34:04,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2147329497, now seen corresponding path program 1 times [2020-10-28 18:34:04,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:34:04,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819156019] [2020-10-28 18:34:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:34:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:05,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:06,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:09,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:09,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 18:34:09,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:34:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:34:09,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:09,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:34:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 18:34:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 18:34:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:34:10,434 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:34:10,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:34:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:10,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:10,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:10,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:34:10,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:34:10,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:34:10,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:10,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:34:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:34:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:34:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:34:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:34:10,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819156019] [2020-10-28 18:34:10,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:34:10,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:34:10,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775774516] [2020-10-28 18:34:10,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:34:10,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:34:10,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:34:10,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:34:10,504 INFO L87 Difference]: Start difference. First operand 187 states and 268 transitions. Second operand 7 states. [2020-10-28 18:34:11,042 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:34:11,988 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-28 18:34:12,445 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:34:13,005 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:34:13,474 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:34:13,896 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:34:14,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:34:14,503 INFO L93 Difference]: Finished difference Result 598 states and 901 transitions. [2020-10-28 18:34:14,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 18:34:14,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-28 18:34:14,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:34:14,510 INFO L225 Difference]: With dead ends: 598 [2020-10-28 18:34:14,510 INFO L226 Difference]: Without dead ends: 499 [2020-10-28 18:34:14,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-28 18:34:14,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-28 18:34:14,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 232. [2020-10-28 18:34:14,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-28 18:34:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 340 transitions. [2020-10-28 18:34:14,553 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 340 transitions. Word has length 68 [2020-10-28 18:34:14,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:34:14,554 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 340 transitions. [2020-10-28 18:34:14,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:34:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 340 transitions. [2020-10-28 18:34:14,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 18:34:14,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:34:14,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:34:14,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:34:14,563 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:34:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:34:14,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1601379729, now seen corresponding path program 1 times [2020-10-28 18:34:14,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:34:14,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520002870] [2020-10-28 18:34:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:34:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:14,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:14,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:15,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:18,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:19,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:19,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 18:34:19,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:34:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:34:19,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:19,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:34:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:34:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 18:34:19,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:34:20,039 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:34:20,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:34:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:20,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:20,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:34:20,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:34:20,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:34:20,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:20,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:34:20,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:34:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:34:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:34:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:34:20,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520002870] [2020-10-28 18:34:20,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:34:20,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:34:20,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003753011] [2020-10-28 18:34:20,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:34:20,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:34:20,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:34:20,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:34:20,097 INFO L87 Difference]: Start difference. First operand 232 states and 340 transitions. Second operand 7 states. [2020-10-28 18:34:20,552 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:34:21,484 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:34:21,916 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-28 18:34:22,371 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:34:22,825 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:34:23,252 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:34:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:34:23,577 INFO L93 Difference]: Finished difference Result 723 states and 1098 transitions. [2020-10-28 18:34:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 18:34:23,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-28 18:34:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:34:23,583 INFO L225 Difference]: With dead ends: 723 [2020-10-28 18:34:23,583 INFO L226 Difference]: Without dead ends: 624 [2020-10-28 18:34:23,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-28 18:34:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-10-28 18:34:23,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 354. [2020-10-28 18:34:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-28 18:34:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 534 transitions. [2020-10-28 18:34:23,622 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 534 transitions. Word has length 68 [2020-10-28 18:34:23,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:34:23,625 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 534 transitions. [2020-10-28 18:34:23,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:34:23,625 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 534 transitions. [2020-10-28 18:34:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 18:34:23,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:34:23,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:34:23,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:34:23,635 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:34:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:34:23,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1796233243, now seen corresponding path program 1 times [2020-10-28 18:34:23,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:34:23,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236937215] [2020-10-28 18:34:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:34:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:23,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:24,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 18:34:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:34:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:34:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:28,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:34:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:34:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 18:34:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 18:34:29,248 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:34:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:34:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:29,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:29,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:29,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:34:29,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:34:29,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:34:29,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:29,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:34:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:34:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:34:29,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:34:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:34:29,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236937215] [2020-10-28 18:34:29,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:34:29,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:34:29,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034542360] [2020-10-28 18:34:29,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:34:29,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:34:29,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:34:29,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:34:29,309 INFO L87 Difference]: Start difference. First operand 354 states and 534 transitions. Second operand 7 states. [2020-10-28 18:34:29,870 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 18:34:30,925 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:34:31,319 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:34:31,782 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 18:34:32,197 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:34:32,650 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:34:33,132 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 18:34:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:34:33,492 INFO L93 Difference]: Finished difference Result 1225 states and 1901 transitions. [2020-10-28 18:34:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:34:33,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-28 18:34:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:34:33,499 INFO L225 Difference]: With dead ends: 1225 [2020-10-28 18:34:33,499 INFO L226 Difference]: Without dead ends: 976 [2020-10-28 18:34:33,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-28 18:34:33,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-10-28 18:34:33,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 504. [2020-10-28 18:34:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-28 18:34:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 766 transitions. [2020-10-28 18:34:33,548 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 766 transitions. Word has length 68 [2020-10-28 18:34:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:34:33,548 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 766 transitions. [2020-10-28 18:34:33,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:34:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 766 transitions. [2020-10-28 18:34:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 18:34:33,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:34:33,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:34:33,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:34:33,551 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:34:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:34:33,551 INFO L82 PathProgramCache]: Analyzing trace with hash 770796058, now seen corresponding path program 1 times [2020-10-28 18:34:33,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:34:33,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763779945] [2020-10-28 18:34:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:34:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:33,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:33,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:34,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:34,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:36,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:36,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:38,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:38,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 18:34:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:34:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:34:38,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:38,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:34:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 18:34:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:34:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:34:39,024 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:34:39,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:34:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:39,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:39,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:34:39,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:34:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:34:39,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:39,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:34:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:34:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:34:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:34:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:34:39,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763779945] [2020-10-28 18:34:39,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:34:39,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:34:39,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597567156] [2020-10-28 18:34:39,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:34:39,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:34:39,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:34:39,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:34:39,070 INFO L87 Difference]: Start difference. First operand 504 states and 766 transitions. Second operand 4 states. [2020-10-28 18:34:39,867 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 18:34:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:34:40,456 INFO L93 Difference]: Finished difference Result 1253 states and 1938 transitions. [2020-10-28 18:34:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:34:40,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-28 18:34:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:34:40,463 INFO L225 Difference]: With dead ends: 1253 [2020-10-28 18:34:40,463 INFO L226 Difference]: Without dead ends: 854 [2020-10-28 18:34:40,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:34:40,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-10-28 18:34:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 835. [2020-10-28 18:34:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-28 18:34:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1271 transitions. [2020-10-28 18:34:40,552 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1271 transitions. Word has length 68 [2020-10-28 18:34:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:34:40,553 INFO L481 AbstractCegarLoop]: Abstraction has 835 states and 1271 transitions. [2020-10-28 18:34:40,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:34:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1271 transitions. [2020-10-28 18:34:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 18:34:40,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:34:40,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:34:40,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:34:40,555 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:34:40,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:34:40,556 INFO L82 PathProgramCache]: Analyzing trace with hash 639942978, now seen corresponding path program 1 times [2020-10-28 18:34:40,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:34:40,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328049394] [2020-10-28 18:34:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:34:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:45,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:45,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 18:34:45,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:34:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:34:45,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:45,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:34:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:34:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 18:34:45,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:34:46,063 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:34:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:34:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:46,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:46,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:34:46,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:34:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:34:46,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:46,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:34:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:34:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:34:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:34:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:34:46,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328049394] [2020-10-28 18:34:46,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:34:46,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:34:46,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960219942] [2020-10-28 18:34:46,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:34:46,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:34:46,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:34:46,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:34:46,122 INFO L87 Difference]: Start difference. First operand 835 states and 1271 transitions. Second operand 7 states. [2020-10-28 18:34:46,590 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:34:47,471 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-28 18:34:47,900 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:34:48,317 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:34:48,710 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:34:49,156 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:34:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:34:49,790 INFO L93 Difference]: Finished difference Result 1929 states and 2950 transitions. [2020-10-28 18:34:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 18:34:49,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-28 18:34:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:34:49,802 INFO L225 Difference]: With dead ends: 1929 [2020-10-28 18:34:49,802 INFO L226 Difference]: Without dead ends: 1657 [2020-10-28 18:34:49,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-28 18:34:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2020-10-28 18:34:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1019. [2020-10-28 18:34:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-10-28 18:34:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1556 transitions. [2020-10-28 18:34:49,902 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1556 transitions. Word has length 68 [2020-10-28 18:34:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:34:49,902 INFO L481 AbstractCegarLoop]: Abstraction has 1019 states and 1556 transitions. [2020-10-28 18:34:49,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:34:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1556 transitions. [2020-10-28 18:34:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 18:34:49,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:34:49,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:34:49,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:34:49,904 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:34:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:34:49,905 INFO L82 PathProgramCache]: Analyzing trace with hash -385701844, now seen corresponding path program 1 times [2020-10-28 18:34:49,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:34:49,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753962725] [2020-10-28 18:34:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:34:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:50,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:50,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:50,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:52,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:52,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:53,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:53,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:53,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:53,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:54,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:54,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 18:34:54,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 18:34:54,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:34:54,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:54,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:34:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:34:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 18:34:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:34:55,343 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:34:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:34:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:55,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:55,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:34:55,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:34:55,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:34:55,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:55,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:34:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:34:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:34:55,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:34:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:34:55,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753962725] [2020-10-28 18:34:55,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:34:55,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:34:55,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800698522] [2020-10-28 18:34:55,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:34:55,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:34:55,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:34:55,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:34:55,389 INFO L87 Difference]: Start difference. First operand 1019 states and 1556 transitions. Second operand 7 states. [2020-10-28 18:34:55,847 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:34:56,839 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:34:57,237 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:34:57,611 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-28 18:34:58,035 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:34:58,426 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:34:58,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:34:58,843 INFO L93 Difference]: Finished difference Result 2166 states and 3315 transitions. [2020-10-28 18:34:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 18:34:58,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-28 18:34:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:34:58,856 INFO L225 Difference]: With dead ends: 2166 [2020-10-28 18:34:58,856 INFO L226 Difference]: Without dead ends: 1894 [2020-10-28 18:34:58,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-28 18:34:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-10-28 18:34:58,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1213. [2020-10-28 18:34:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-28 18:34:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1857 transitions. [2020-10-28 18:34:58,975 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1857 transitions. Word has length 68 [2020-10-28 18:34:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:34:58,976 INFO L481 AbstractCegarLoop]: Abstraction has 1213 states and 1857 transitions. [2020-10-28 18:34:58,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:34:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1857 transitions. [2020-10-28 18:34:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 18:34:58,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:34:58,977 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] [2020-10-28 18:34:58,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:34:58,978 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:34:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:34:58,978 INFO L82 PathProgramCache]: Analyzing trace with hash -210778879, now seen corresponding path program 1 times [2020-10-28 18:34:58,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:34:58,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673019416] [2020-10-28 18:34:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:34:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:59,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:04,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:04,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 18:35:04,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:35:04,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 18:35:04,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:04,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:35:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:35:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 18:35:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:04,460 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:35:04,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:04,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:04,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:04,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:04,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:35:04,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:04,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:35:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:35:04,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:35:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:04,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673019416] [2020-10-28 18:35:04,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:04,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:35:04,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968368283] [2020-10-28 18:35:04,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:35:04,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:04,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:35:04,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:35:04,527 INFO L87 Difference]: Start difference. First operand 1213 states and 1857 transitions. Second operand 6 states. [2020-10-28 18:35:04,971 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 18:35:05,821 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 18:35:06,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:06,338 INFO L93 Difference]: Finished difference Result 3458 states and 5322 transitions. [2020-10-28 18:35:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:35:06,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-28 18:35:06,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:06,358 INFO L225 Difference]: With dead ends: 3458 [2020-10-28 18:35:06,358 INFO L226 Difference]: Without dead ends: 2290 [2020-10-28 18:35:06,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:35:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2020-10-28 18:35:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2287. [2020-10-28 18:35:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-10-28 18:35:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3487 transitions. [2020-10-28 18:35:06,585 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3487 transitions. Word has length 69 [2020-10-28 18:35:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:06,585 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 3487 transitions. [2020-10-28 18:35:06,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:35:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3487 transitions. [2020-10-28 18:35:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 18:35:06,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:06,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:35:06,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:35:06,587 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:06,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2147268731, now seen corresponding path program 1 times [2020-10-28 18:35:06,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:06,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143285188] [2020-10-28 18:35:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:06,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:06,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:06,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:11,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:11,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 18:35:11,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:35:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:35:11,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:11,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:35:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:35:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 18:35:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:11,940 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-10-28 18:35:12,341 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:35:12,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:12,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:12,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:12,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:35:12,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:12,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:35:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:35:12,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:12,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143285188] [2020-10-28 18:35:12,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:12,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:35:12,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284356446] [2020-10-28 18:35:12,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:35:12,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:12,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:35:12,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:35:12,392 INFO L87 Difference]: Start difference. First operand 2287 states and 3487 transitions. Second operand 8 states. [2020-10-28 18:35:12,875 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:35:14,112 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 18:35:14,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:14,930 INFO L93 Difference]: Finished difference Result 5592 states and 8554 transitions. [2020-10-28 18:35:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:35:14,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-28 18:35:14,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:14,947 INFO L225 Difference]: With dead ends: 5592 [2020-10-28 18:35:14,947 INFO L226 Difference]: Without dead ends: 3383 [2020-10-28 18:35:14,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-28 18:35:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2020-10-28 18:35:15,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 2287. [2020-10-28 18:35:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-10-28 18:35:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3486 transitions. [2020-10-28 18:35:15,241 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3486 transitions. Word has length 70 [2020-10-28 18:35:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:15,241 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 3486 transitions. [2020-10-28 18:35:15,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:35:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3486 transitions. [2020-10-28 18:35:15,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 18:35:15,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:15,243 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] [2020-10-28 18:35:15,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:35:15,243 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:15,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1665841832, now seen corresponding path program 1 times [2020-10-28 18:35:15,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:15,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596522430] [2020-10-28 18:35:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:15,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:15,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:17,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:20,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:20,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 18:35:20,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:35:20,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:35:20,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:20,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:35:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:35:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 18:35:20,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:20,707 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:35:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:20,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:20,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:20,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:20,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:20,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:35:20,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:20,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:20,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:35:20,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:20,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:35:20,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:20,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596522430] [2020-10-28 18:35:20,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:20,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:35:20,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869612318] [2020-10-28 18:35:20,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:35:20,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:20,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:35:20,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:35:20,756 INFO L87 Difference]: Start difference. First operand 2287 states and 3486 transitions. Second operand 6 states. [2020-10-28 18:35:21,234 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 18:35:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:22,188 INFO L93 Difference]: Finished difference Result 4533 states and 6928 transitions. [2020-10-28 18:35:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:35:22,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-28 18:35:22,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:22,201 INFO L225 Difference]: With dead ends: 4533 [2020-10-28 18:35:22,201 INFO L226 Difference]: Without dead ends: 2287 [2020-10-28 18:35:22,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:35:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2020-10-28 18:35:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2287. [2020-10-28 18:35:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-10-28 18:35:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3437 transitions. [2020-10-28 18:35:22,535 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3437 transitions. Word has length 71 [2020-10-28 18:35:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:22,536 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 3437 transitions. [2020-10-28 18:35:22,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:35:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3437 transitions. [2020-10-28 18:35:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 18:35:22,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:22,537 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] [2020-10-28 18:35:22,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:35:22,538 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:22,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:22,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1605421281, now seen corresponding path program 1 times [2020-10-28 18:35:22,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:22,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456465353] [2020-10-28 18:35:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:22,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:22,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:23,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:23,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:26,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:27,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:27,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 18:35:27,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:35:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:35:27,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:27,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:35:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:35:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 18:35:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:27,990 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:35:27,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:28,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:28,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:28,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:28,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:35:28,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:28,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:35:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:35:28,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:28,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456465353] [2020-10-28 18:35:28,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:28,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:35:28,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384427948] [2020-10-28 18:35:28,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:35:28,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:28,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:35:28,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:35:28,053 INFO L87 Difference]: Start difference. First operand 2287 states and 3437 transitions. Second operand 6 states. [2020-10-28 18:35:28,516 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:35:29,433 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:35:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:30,182 INFO L93 Difference]: Finished difference Result 6693 states and 10074 transitions. [2020-10-28 18:35:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:35:30,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-28 18:35:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:30,203 INFO L225 Difference]: With dead ends: 6693 [2020-10-28 18:35:30,203 INFO L226 Difference]: Without dead ends: 4443 [2020-10-28 18:35:30,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:35:30,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2020-10-28 18:35:30,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 4440. [2020-10-28 18:35:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2020-10-28 18:35:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 6625 transitions. [2020-10-28 18:35:30,863 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 6625 transitions. Word has length 72 [2020-10-28 18:35:30,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:30,863 INFO L481 AbstractCegarLoop]: Abstraction has 4440 states and 6625 transitions. [2020-10-28 18:35:30,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:35:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 6625 transitions. [2020-10-28 18:35:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 18:35:30,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:30,865 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] [2020-10-28 18:35:30,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:35:30,865 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:30,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:30,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1823204089, now seen corresponding path program 1 times [2020-10-28 18:35:30,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:30,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412880893] [2020-10-28 18:35:30,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:30,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:30,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:31,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:35,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 18:35:35,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:35:35,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:35:35,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:35,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:35:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:35:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 18:35:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:36,353 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:35:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:36,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:36,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:36,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:36,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:36,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:35:36,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:36,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:35:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:35:36,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:36,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412880893] [2020-10-28 18:35:36,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:36,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:35:36,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544611923] [2020-10-28 18:35:36,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:35:36,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:36,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:35:36,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:35:36,402 INFO L87 Difference]: Start difference. First operand 4440 states and 6625 transitions. Second operand 6 states. [2020-10-28 18:35:36,852 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:35:37,894 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:35:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:39,367 INFO L93 Difference]: Finished difference Result 13095 states and 19529 transitions. [2020-10-28 18:35:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:35:39,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-28 18:35:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:39,406 INFO L225 Difference]: With dead ends: 13095 [2020-10-28 18:35:39,407 INFO L226 Difference]: Without dead ends: 8688 [2020-10-28 18:35:39,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:35:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8688 states. [2020-10-28 18:35:40,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8688 to 8685. [2020-10-28 18:35:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8685 states. [2020-10-28 18:35:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8685 states to 8685 states and 12839 transitions. [2020-10-28 18:35:40,645 INFO L78 Accepts]: Start accepts. Automaton has 8685 states and 12839 transitions. Word has length 73 [2020-10-28 18:35:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:40,645 INFO L481 AbstractCegarLoop]: Abstraction has 8685 states and 12839 transitions. [2020-10-28 18:35:40,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:35:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 8685 states and 12839 transitions. [2020-10-28 18:35:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 18:35:40,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:40,648 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] [2020-10-28 18:35:40,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:35:40,648 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:40,649 INFO L82 PathProgramCache]: Analyzing trace with hash 566154288, now seen corresponding path program 1 times [2020-10-28 18:35:40,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:40,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749264021] [2020-10-28 18:35:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:40,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:41,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:41,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:45,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:45,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 18:35:45,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:35:45,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:35:45,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:45,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:35:45,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 18:35:45,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:35:45,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:46,120 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:35:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:46,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:46,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:46,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:35:46,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:46,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:35:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:35:46,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:46,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749264021] [2020-10-28 18:35:46,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:46,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:35:46,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365485734] [2020-10-28 18:35:46,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:35:46,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:46,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:35:46,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:35:46,151 INFO L87 Difference]: Start difference. First operand 8685 states and 12839 transitions. Second operand 5 states. [2020-10-28 18:35:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:48,290 INFO L93 Difference]: Finished difference Result 14696 states and 21673 transitions. [2020-10-28 18:35:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:35:48,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-28 18:35:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:48,328 INFO L225 Difference]: With dead ends: 14696 [2020-10-28 18:35:48,328 INFO L226 Difference]: Without dead ends: 14693 [2020-10-28 18:35:48,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:35:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14693 states. [2020-10-28 18:35:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14693 to 8765. [2020-10-28 18:35:49,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8765 states. [2020-10-28 18:35:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8765 states to 8765 states and 12871 transitions. [2020-10-28 18:35:49,641 INFO L78 Accepts]: Start accepts. Automaton has 8765 states and 12871 transitions. Word has length 74 [2020-10-28 18:35:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:49,642 INFO L481 AbstractCegarLoop]: Abstraction has 8765 states and 12871 transitions. [2020-10-28 18:35:49,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:35:49,642 INFO L276 IsEmpty]: Start isEmpty. Operand 8765 states and 12871 transitions. [2020-10-28 18:35:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 18:35:49,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:49,643 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] [2020-10-28 18:35:49,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:35:49,644 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash -396317196, now seen corresponding path program 1 times [2020-10-28 18:35:49,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:49,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61860819] [2020-10-28 18:35:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:49,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:49,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:49,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:50,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:50,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:50,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:54,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:54,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 18:35:54,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:35:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:35:54,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:54,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:35:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:35:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 18:35:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:55,109 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:35:55,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:55,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:55,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:55,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:55,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:35:55,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:55,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:35:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:35:55,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:55,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61860819] [2020-10-28 18:35:55,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:55,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:35:55,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005003478] [2020-10-28 18:35:55,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:35:55,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:55,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:35:55,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:35:55,139 INFO L87 Difference]: Start difference. First operand 8765 states and 12871 transitions. Second operand 5 states. [2020-10-28 18:35:55,633 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:35:56,471 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:35:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:58,124 INFO L93 Difference]: Finished difference Result 21079 states and 31003 transitions. [2020-10-28 18:35:58,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:35:58,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-28 18:35:58,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:58,157 INFO L225 Difference]: With dead ends: 21079 [2020-10-28 18:35:58,157 INFO L226 Difference]: Without dead ends: 12540 [2020-10-28 18:35:58,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:35:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12540 states. [2020-10-28 18:35:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12540 to 12449. [2020-10-28 18:35:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12449 states. [2020-10-28 18:35:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18139 transitions. [2020-10-28 18:35:59,786 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18139 transitions. Word has length 74 [2020-10-28 18:35:59,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:59,786 INFO L481 AbstractCegarLoop]: Abstraction has 12449 states and 18139 transitions. [2020-10-28 18:35:59,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:35:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18139 transitions. [2020-10-28 18:35:59,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 18:35:59,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:59,788 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] [2020-10-28 18:35:59,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:35:59,788 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:59,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:59,789 INFO L82 PathProgramCache]: Analyzing trace with hash -157864702, now seen corresponding path program 1 times [2020-10-28 18:35:59,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:59,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692770406] [2020-10-28 18:35:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:59,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:00,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:00,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:00,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:02,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:02,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:02,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:03,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:03,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:03,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 18:36:04,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 18:36:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:36:04,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:04,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 18:36:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:36:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 18:36:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:05,574 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:36:05,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:36:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:36:05,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:36:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:36:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:05,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:36:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:36:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:36:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:36:05,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692770406] [2020-10-28 18:36:05,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:36:05,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 18:36:05,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166911850] [2020-10-28 18:36:05,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 18:36:05,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:36:05,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 18:36:05,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:36:05,622 INFO L87 Difference]: Start difference. First operand 12449 states and 18139 transitions. Second operand 13 states. [2020-10-28 18:36:06,748 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 155 [2020-10-28 18:36:07,099 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-10-28 18:36:07,537 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2020-10-28 18:36:07,811 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-28 18:36:08,010 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-10-28 18:36:08,149 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-10-28 18:36:08,927 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-10-28 18:36:10,147 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 158 [2020-10-28 18:36:10,663 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 18:36:11,766 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-10-28 18:36:17,349 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 153 [2020-10-28 18:36:17,995 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:36:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:36:29,194 INFO L93 Difference]: Finished difference Result 122890 states and 176988 transitions. [2020-10-28 18:36:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 18:36:29,195 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 74 [2020-10-28 18:36:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:36:29,621 INFO L225 Difference]: With dead ends: 122890 [2020-10-28 18:36:29,621 INFO L226 Difference]: Without dead ends: 117692 [2020-10-28 18:36:29,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=392, Invalid=1414, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 18:36:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117692 states. [2020-10-28 18:36:33,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117692 to 12452. [2020-10-28 18:36:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12452 states. [2020-10-28 18:36:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12452 states to 12452 states and 18136 transitions. [2020-10-28 18:36:33,178 INFO L78 Accepts]: Start accepts. Automaton has 12452 states and 18136 transitions. Word has length 74 [2020-10-28 18:36:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:36:33,179 INFO L481 AbstractCegarLoop]: Abstraction has 12452 states and 18136 transitions. [2020-10-28 18:36:33,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 18:36:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 12452 states and 18136 transitions. [2020-10-28 18:36:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 18:36:33,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:36:33,181 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] [2020-10-28 18:36:33,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:36:33,181 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:36:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:36:33,181 INFO L82 PathProgramCache]: Analyzing trace with hash 36988812, now seen corresponding path program 1 times [2020-10-28 18:36:33,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:36:33,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119321534] [2020-10-28 18:36:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:36:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:35,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:35,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:38,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:38,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 18:36:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:36:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:36:38,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:38,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 18:36:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:36:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 18:36:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:38,795 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:36:38,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:36:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:38,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:38,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:36:38,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:36:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:36:38,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:38,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:36:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:36:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:36:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:36:38,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119321534] [2020-10-28 18:36:38,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:36:38,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:36:38,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001590679] [2020-10-28 18:36:38,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:36:38,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:36:38,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:36:38,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:36:38,843 INFO L87 Difference]: Start difference. First operand 12452 states and 18136 transitions. Second operand 11 states. [2020-10-28 18:36:39,369 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-28 18:36:41,035 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:36:41,501 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:36:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:36:46,297 INFO L93 Difference]: Finished difference Result 37536 states and 54461 transitions. [2020-10-28 18:36:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 18:36:46,298 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-28 18:36:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:36:46,360 INFO L225 Difference]: With dead ends: 37536 [2020-10-28 18:36:46,361 INFO L226 Difference]: Without dead ends: 25304 [2020-10-28 18:36:46,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:36:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25304 states. [2020-10-28 18:36:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25304 to 12449. [2020-10-28 18:36:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12449 states. [2020-10-28 18:36:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18124 transitions. [2020-10-28 18:36:49,065 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18124 transitions. Word has length 74 [2020-10-28 18:36:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:36:49,066 INFO L481 AbstractCegarLoop]: Abstraction has 12449 states and 18124 transitions. [2020-10-28 18:36:49,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:36:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18124 transitions. [2020-10-28 18:36:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 18:36:49,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:36:49,068 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] [2020-10-28 18:36:49,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:36:49,068 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:36:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:36:49,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1119301453, now seen corresponding path program 1 times [2020-10-28 18:36:49,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:36:49,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238006600] [2020-10-28 18:36:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:36:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:49,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:51,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:51,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:53,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:54,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:54,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 18:36:54,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:36:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:36:54,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:54,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 18:36:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:36:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 18:36:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:54,710 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:36:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:36:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:54,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:54,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:36:54,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:36:54,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:36:54,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:54,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:36:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:36:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:36:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:36:54,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238006600] [2020-10-28 18:36:54,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:36:54,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:36:54,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439011252] [2020-10-28 18:36:54,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:36:54,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:36:54,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:36:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:36:54,777 INFO L87 Difference]: Start difference. First operand 12449 states and 18124 transitions. Second operand 11 states. [2020-10-28 18:36:55,311 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 18:36:56,890 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:36:57,399 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 18:37:01,014 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2020-10-28 18:37:04,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:37:04,942 INFO L93 Difference]: Finished difference Result 43287 states and 62997 transitions. [2020-10-28 18:37:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 18:37:04,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-28 18:37:04,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:37:04,996 INFO L225 Difference]: With dead ends: 43287 [2020-10-28 18:37:04,997 INFO L226 Difference]: Without dead ends: 30995 [2020-10-28 18:37:05,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2020-10-28 18:37:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30995 states. [2020-10-28 18:37:07,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30995 to 12449. [2020-10-28 18:37:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12449 states. [2020-10-28 18:37:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18115 transitions. [2020-10-28 18:37:07,845 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18115 transitions. Word has length 74 [2020-10-28 18:37:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:37:07,845 INFO L481 AbstractCegarLoop]: Abstraction has 12449 states and 18115 transitions. [2020-10-28 18:37:07,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:37:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18115 transitions. [2020-10-28 18:37:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 18:37:07,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:07,847 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] [2020-10-28 18:37:07,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:37:07,847 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:07,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:07,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1794232912, now seen corresponding path program 1 times [2020-10-28 18:37:07,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:07,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927674805] [2020-10-28 18:37:07,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:07,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:09,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:12,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:12,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 18:37:12,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:37:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 18:37:12,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:12,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 18:37:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:37:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 18:37:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:13,116 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-10-28 18:37:13,261 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-10-28 18:37:13,391 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2020-10-28 18:37:13,527 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 18 [2020-10-28 18:37:13,987 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 18:37:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:37:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:14,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:14,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:37:14,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:37:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:37:14,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:14,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:37:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:37:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:37:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:37:14,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927674805] [2020-10-28 18:37:14,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:37:14,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:37:14,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599876085] [2020-10-28 18:37:14,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 18:37:14,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:37:14,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 18:37:14,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:37:14,033 INFO L87 Difference]: Start difference. First operand 12449 states and 18115 transitions. Second operand 10 states. [2020-10-28 18:37:14,537 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 18:37:16,240 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 18:37:16,762 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 18:37:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:37:22,490 INFO L93 Difference]: Finished difference Result 29929 states and 43627 transitions. [2020-10-28 18:37:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 18:37:22,491 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-28 18:37:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:37:22,530 INFO L225 Difference]: With dead ends: 29929 [2020-10-28 18:37:22,530 INFO L226 Difference]: Without dead ends: 24730 [2020-10-28 18:37:22,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-28 18:37:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24730 states. [2020-10-28 18:37:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24730 to 12444. [2020-10-28 18:37:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12444 states. [2020-10-28 18:37:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12444 states to 12444 states and 18095 transitions. [2020-10-28 18:37:25,969 INFO L78 Accepts]: Start accepts. Automaton has 12444 states and 18095 transitions. Word has length 75 [2020-10-28 18:37:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:37:25,969 INFO L481 AbstractCegarLoop]: Abstraction has 12444 states and 18095 transitions. [2020-10-28 18:37:25,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 18:37:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 12444 states and 18095 transitions. [2020-10-28 18:37:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 18:37:25,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:25,971 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] [2020-10-28 18:37:25,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 18:37:25,971 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:25,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1467698047, now seen corresponding path program 1 times [2020-10-28 18:37:25,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:25,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931639067] [2020-10-28 18:37:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:26,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:28,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking...