/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/eca-rers2012/Problem12_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:24:34,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:24:34,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:24:34,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:24:34,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:24:34,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:24:34,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:24:34,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:24:34,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:24:34,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:24:34,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:24:34,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:24:34,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:24:34,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:24:34,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:24:34,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:24:34,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:24:34,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:24:34,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:24:34,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:24:34,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:24:34,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:24:34,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:24:34,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:24:34,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:24:34,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:24:34,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:24:34,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:24:34,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:24:34,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:24:34,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:24:34,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:24:34,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:24:34,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:24:34,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:24:34,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:24:34,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:24:34,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:24:34,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:24:34,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:24:34,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:24:34,697 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 12:24:34,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:24:34,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:24:34,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:24:34,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:24:34,758 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:24:34,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:24:34,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:24:34,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:24:34,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:24:34,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:24:34,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:24:34,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:24:34,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:24:34,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:24:34,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:24:34,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:24:34,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:24:34,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:24:34,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:24:34,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:24:34,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:24:34,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:24:34,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:24:34,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:24:34,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:24:34,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:24:34,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:24:34,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:24:34,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:24:34,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:24:35,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:24:35,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:24:35,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:24:35,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:24:35,290 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:24:35,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-28 12:24:35,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22bfab8fe/2dc75050af0b404ebe9259480723afe8/FLAG6353f4d8f [2020-10-28 12:24:36,424 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:24:36,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-28 12:24:36,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22bfab8fe/2dc75050af0b404ebe9259480723afe8/FLAG6353f4d8f [2020-10-28 12:24:36,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22bfab8fe/2dc75050af0b404ebe9259480723afe8 [2020-10-28 12:24:36,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:24:36,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:24:36,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:36,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:24:36,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:24:36,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:36" (1/1) ... [2020-10-28 12:24:36,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407f7f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:36, skipping insertion in model container [2020-10-28 12:24:36,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:36" (1/1) ... [2020-10-28 12:24:36,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:24:37,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:24:38,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:38,444 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:24:39,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:39,179 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:24:39,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39 WrapperNode [2020-10-28 12:24:39,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:39,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:24:39,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:24:39,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:24:39,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:24:39,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:24:39,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:24:39,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:24:39,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (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 12:24:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:24:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:24:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:24:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:24:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:24:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:24:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:24:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:24:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:24:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:24:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:24:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:24:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:24:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:24:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:24:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:24:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:24:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:24:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:24:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:24:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:24:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:24:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:24:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:24:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:24:44,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:24:44,692 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:24:44,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:44 BoogieIcfgContainer [2020-10-28 12:24:44,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:24:44,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:24:44,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:24:44,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:24:44,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:24:36" (1/3) ... [2020-10-28 12:24:44,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29da5d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:44, skipping insertion in model container [2020-10-28 12:24:44,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (2/3) ... [2020-10-28 12:24:44,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29da5d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:44, skipping insertion in model container [2020-10-28 12:24:44,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:44" (3/3) ... [2020-10-28 12:24:44,710 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2020-10-28 12:24:44,726 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:24:44,732 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:24:44,747 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:24:44,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:24:44,792 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:24:44,792 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:24:44,792 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:24:44,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:24:44,792 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:24:44,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:24:44,792 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:24:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:24:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 12:24:44,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:44,858 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 12:24:44,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:44,867 INFO L82 PathProgramCache]: Analyzing trace with hash -88085652, now seen corresponding path program 1 times [2020-10-28 12:24:44,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:44,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351440135] [2020-10-28 12:24:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:45,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:45,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:45,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:24:45,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-28 12:24:45,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:45,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 12:24:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:24:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:46,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:24:46,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:46,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:46,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:46,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:46,093 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 12:24:46,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351440135] [2020-10-28 12:24:46,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:46,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:24:46,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838292350] [2020-10-28 12:24:46,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:24:46,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:46,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:24:46,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:24:46,127 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:24:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:57,069 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-28 12:24:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:24:57,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-28 12:24:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:57,104 INFO L225 Difference]: With dead ends: 2492 [2020-10-28 12:24:57,104 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:24:57,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:24:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:24:57,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-28 12:24:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-28 12:24:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-28 12:24:57,284 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 68 [2020-10-28 12:24:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:57,285 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-28 12:24:57,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:24:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-28 12:24:57,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 12:24:57,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:57,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 12:24:57,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:24:57,292 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:57,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1516880606, now seen corresponding path program 1 times [2020-10-28 12:24:57,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:57,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110639264] [2020-10-28 12:24:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 12:24:58,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-28 12:24:58,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:58,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:58,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:24:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:24:58,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:58,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:58,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:58,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:24:58,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:58,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:58,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:24:58,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:59,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:59,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:24:59,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:24:59,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:59,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:24:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:24:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:24:59,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110639264] [2020-10-28 12:24:59,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:59,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:24:59,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850136537] [2020-10-28 12:24:59,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:24:59,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:59,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:24:59,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:24:59,158 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 7 states. [2020-10-28 12:24:59,304 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:25:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:13,354 INFO L93 Difference]: Finished difference Result 4771 states and 7609 transitions. [2020-10-28 12:25:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:25:13,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-28 12:25:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:13,378 INFO L225 Difference]: With dead ends: 4771 [2020-10-28 12:25:13,379 INFO L226 Difference]: Without dead ends: 3212 [2020-10-28 12:25:13,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:25:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2020-10-28 12:25:13,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3164. [2020-10-28 12:25:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-10-28 12:25:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4587 transitions. [2020-10-28 12:25:13,531 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4587 transitions. Word has length 147 [2020-10-28 12:25:13,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:13,531 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 4587 transitions. [2020-10-28 12:25:13,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4587 transitions. [2020-10-28 12:25:13,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 12:25:13,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:13,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:13,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:25:13,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:13,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1026369044, now seen corresponding path program 1 times [2020-10-28 12:25:13,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:13,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178330897] [2020-10-28 12:25:13,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:15,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:15,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 12:25:15,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:25:15,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-10-28 12:25:15,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:15,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:25:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:25:15,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:15,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:15,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:15,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:25:15,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:15,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:15,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:15,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:25:15,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-28 12:25:15,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:15,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:25:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:16,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178330897] [2020-10-28 12:25:16,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:16,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:25:16,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481870593] [2020-10-28 12:25:16,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:16,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:16,053 INFO L87 Difference]: Start difference. First operand 3164 states and 4587 transitions. Second operand 7 states. [2020-10-28 12:25:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:31,208 INFO L93 Difference]: Finished difference Result 9753 states and 14378 transitions. [2020-10-28 12:25:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:25:31,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-28 12:25:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:31,248 INFO L225 Difference]: With dead ends: 9753 [2020-10-28 12:25:31,248 INFO L226 Difference]: Without dead ends: 6595 [2020-10-28 12:25:31,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:25:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2020-10-28 12:25:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6516. [2020-10-28 12:25:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6516 states. [2020-10-28 12:25:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6516 states to 6516 states and 9120 transitions. [2020-10-28 12:25:31,501 INFO L78 Accepts]: Start accepts. Automaton has 6516 states and 9120 transitions. Word has length 176 [2020-10-28 12:25:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:31,502 INFO L481 AbstractCegarLoop]: Abstraction has 6516 states and 9120 transitions. [2020-10-28 12:25:31,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 6516 states and 9120 transitions. [2020-10-28 12:25:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 12:25:31,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:31,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:31,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:25:31,511 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:31,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:31,513 INFO L82 PathProgramCache]: Analyzing trace with hash 305878652, now seen corresponding path program 1 times [2020-10-28 12:25:31,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:31,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572241331] [2020-10-28 12:25:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:31,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:33,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:33,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-28 12:25:33,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:25:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-28 12:25:33,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:33,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:25:33,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:33,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:33,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:33,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:33,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:25:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:33,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:33,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:33,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:33,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:25:33,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 12:25:33,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:33,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:25:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:25:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:33,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572241331] [2020-10-28 12:25:33,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:33,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:25:33,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037815354] [2020-10-28 12:25:33,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:33,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:33,638 INFO L87 Difference]: Start difference. First operand 6516 states and 9120 transitions. Second operand 7 states. [2020-10-28 12:25:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:47,963 INFO L93 Difference]: Finished difference Result 19843 states and 28550 transitions. [2020-10-28 12:25:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:25:47,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-10-28 12:25:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:48,032 INFO L225 Difference]: With dead ends: 19843 [2020-10-28 12:25:48,032 INFO L226 Difference]: Without dead ends: 13333 [2020-10-28 12:25:48,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:25:48,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13333 states. [2020-10-28 12:25:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13333 to 13160. [2020-10-28 12:25:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13160 states. [2020-10-28 12:25:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13160 states to 13160 states and 17034 transitions. [2020-10-28 12:25:48,422 INFO L78 Accepts]: Start accepts. Automaton has 13160 states and 17034 transitions. Word has length 188 [2020-10-28 12:25:48,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:48,422 INFO L481 AbstractCegarLoop]: Abstraction has 13160 states and 17034 transitions. [2020-10-28 12:25:48,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:48,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13160 states and 17034 transitions. [2020-10-28 12:25:48,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 12:25:48,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:48,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:48,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:25:48,427 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:48,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:48,427 INFO L82 PathProgramCache]: Analyzing trace with hash -93230498, now seen corresponding path program 1 times [2020-10-28 12:25:48,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:48,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590742247] [2020-10-28 12:25:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:49,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:49,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-28 12:25:49,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-28 12:25:49,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:49,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:25:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 12:25:49,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:49,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:49,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:49,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:49,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:25:49,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:49,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:49,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:49,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:25:49,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 12:25:49,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:49,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:25:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:50,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590742247] [2020-10-28 12:25:50,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:50,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:25:50,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557747872] [2020-10-28 12:25:50,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:25:50,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:50,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:25:50,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:25:50,168 INFO L87 Difference]: Start difference. First operand 13160 states and 17034 transitions. Second operand 5 states. [2020-10-28 12:26:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:04,043 INFO L93 Difference]: Finished difference Result 39067 states and 52147 transitions. [2020-10-28 12:26:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:26:04,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-28 12:26:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:04,136 INFO L225 Difference]: With dead ends: 39067 [2020-10-28 12:26:04,136 INFO L226 Difference]: Without dead ends: 25913 [2020-10-28 12:26:04,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:26:04,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25913 states. [2020-10-28 12:26:04,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25913 to 23583. [2020-10-28 12:26:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23583 states. [2020-10-28 12:26:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23583 states to 23583 states and 30136 transitions. [2020-10-28 12:26:04,833 INFO L78 Accepts]: Start accepts. Automaton has 23583 states and 30136 transitions. Word has length 213 [2020-10-28 12:26:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:04,834 INFO L481 AbstractCegarLoop]: Abstraction has 23583 states and 30136 transitions. [2020-10-28 12:26:04,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:26:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 23583 states and 30136 transitions. [2020-10-28 12:26:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-28 12:26:04,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:04,841 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:04,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:26:04,841 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:04,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:04,842 INFO L82 PathProgramCache]: Analyzing trace with hash 402839416, now seen corresponding path program 1 times [2020-10-28 12:26:04,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:04,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107637994] [2020-10-28 12:26:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:07,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:07,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-28 12:26:07,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:26:07,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2485 [2020-10-28 12:26:07,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:07,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:26:07,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:26:07,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:07,617 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:26:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:07,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:07,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:07,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:07,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:26:07,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:07,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:07,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:07,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:07,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:26:07,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:07,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 12:26:07,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:07,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:26:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:26:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:08,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:08,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:08,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:26:08,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:26:08,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:08,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:26:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:26:08,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107637994] [2020-10-28 12:26:08,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:08,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:26:08,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081507504] [2020-10-28 12:26:08,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:26:08,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:08,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:26:08,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:26:08,192 INFO L87 Difference]: Start difference. First operand 23583 states and 30136 transitions. Second operand 6 states. [2020-10-28 12:26:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:27,619 INFO L93 Difference]: Finished difference Result 70158 states and 96300 transitions. [2020-10-28 12:26:27,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:26:27,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 288 [2020-10-28 12:26:27,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:27,772 INFO L225 Difference]: With dead ends: 70158 [2020-10-28 12:26:27,773 INFO L226 Difference]: Without dead ends: 46581 [2020-10-28 12:26:27,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:26:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46581 states. [2020-10-28 12:26:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46581 to 45009. [2020-10-28 12:26:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45009 states. [2020-10-28 12:26:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45009 states to 45009 states and 58466 transitions. [2020-10-28 12:26:29,237 INFO L78 Accepts]: Start accepts. Automaton has 45009 states and 58466 transitions. Word has length 288 [2020-10-28 12:26:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:29,238 INFO L481 AbstractCegarLoop]: Abstraction has 45009 states and 58466 transitions. [2020-10-28 12:26:29,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:26:29,238 INFO L276 IsEmpty]: Start isEmpty. Operand 45009 states and 58466 transitions. [2020-10-28 12:26:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-28 12:26:29,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:29,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:29,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:26:29,246 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:29,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1848212132, now seen corresponding path program 1 times [2020-10-28 12:26:29,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:29,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404850030] [2020-10-28 12:26:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:29,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:31,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:31,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-28 12:26:31,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:26:31,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2135 [2020-10-28 12:26:31,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:31,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:31,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:26:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 12:26:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:26:31,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:31,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:31,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:31,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:31,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:26:31,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:31,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:31,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:31,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:32,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:32,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:26:32,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:32,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:26:32,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:32,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:26:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:32,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:26:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:32,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:32,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:32,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:32,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:26:32,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 12:26:32,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:32,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:26:32,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:26:32,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404850030] [2020-10-28 12:26:32,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:32,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:26:32,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432479012] [2020-10-28 12:26:32,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:26:32,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:26:32,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:26:32,603 INFO L87 Difference]: Start difference. First operand 45009 states and 58466 transitions. Second operand 6 states. [2020-10-28 12:26:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:55,047 INFO L93 Difference]: Finished difference Result 111908 states and 148990 transitions. [2020-10-28 12:26:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:26:55,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2020-10-28 12:26:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:55,310 INFO L225 Difference]: With dead ends: 111908 [2020-10-28 12:26:55,310 INFO L226 Difference]: Without dead ends: 66905 [2020-10-28 12:26:55,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:26:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66905 states. [2020-10-28 12:26:57,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66905 to 66093. [2020-10-28 12:26:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66093 states. [2020-10-28 12:26:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66093 states to 66093 states and 86727 transitions. [2020-10-28 12:26:57,812 INFO L78 Accepts]: Start accepts. Automaton has 66093 states and 86727 transitions. Word has length 306 [2020-10-28 12:26:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:57,813 INFO L481 AbstractCegarLoop]: Abstraction has 66093 states and 86727 transitions. [2020-10-28 12:26:57,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:26:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 66093 states and 86727 transitions. [2020-10-28 12:26:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-28 12:26:57,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:57,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:57,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:26:57,822 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:57,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:57,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1804572514, now seen corresponding path program 1 times [2020-10-28 12:26:57,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:57,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955769462] [2020-10-28 12:26:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:00,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:00,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-28 12:27:00,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2011 [2020-10-28 12:27:00,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:00,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:27:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 12:27:00,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:00,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:00,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:00,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:00,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:27:00,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:00,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:00,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:00,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:00,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:00,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:27:00,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:00,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 12:27:00,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:00,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:27:00,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:00,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:27:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:00,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:00,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:00,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:27:00,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 12:27:00,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:00,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:27:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:27:00,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955769462] [2020-10-28 12:27:00,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:00,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:27:00,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659487737] [2020-10-28 12:27:00,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:00,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:00,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:00,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:00,767 INFO L87 Difference]: Start difference. First operand 66093 states and 86727 transitions. Second operand 7 states. [2020-10-28 12:27:26,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:26,283 INFO L93 Difference]: Finished difference Result 151967 states and 214756 transitions. [2020-10-28 12:27:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:27:26,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-28 12:27:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:27,019 INFO L225 Difference]: With dead ends: 151967 [2020-10-28 12:27:27,019 INFO L226 Difference]: Without dead ends: 85880 [2020-10-28 12:27:27,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:27:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85880 states. [2020-10-28 12:27:29,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85880 to 84543. [2020-10-28 12:27:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84543 states. [2020-10-28 12:27:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84543 states to 84543 states and 111533 transitions. [2020-10-28 12:27:29,568 INFO L78 Accepts]: Start accepts. Automaton has 84543 states and 111533 transitions. Word has length 307 [2020-10-28 12:27:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:29,571 INFO L481 AbstractCegarLoop]: Abstraction has 84543 states and 111533 transitions. [2020-10-28 12:27:29,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 84543 states and 111533 transitions. [2020-10-28 12:27:29,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-28 12:27:29,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:29,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:29,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:27:29,592 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:29,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1938968234, now seen corresponding path program 1 times [2020-10-28 12:27:29,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:29,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945638332] [2020-10-28 12:27:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:29,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:31,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:33,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:33,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 12:27:33,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:27:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3857 [2020-10-28 12:27:33,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:33,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:27:33,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:33,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:33,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:33,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:33,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:27:33,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:33,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:33,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:34,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:34,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:27:34,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 12:27:34,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:34,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:27:34,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:34,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:27:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:34,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:34,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:34,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:27:34,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:34,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:27:34,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:34,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:34,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:34,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 12:27:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 120 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:27:34,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945638332] [2020-10-28 12:27:34,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:34,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:27:34,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359810459] [2020-10-28 12:27:34,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:34,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:34,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:34,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:34,731 INFO L87 Difference]: Start difference. First operand 84543 states and 111533 transitions. Second operand 7 states. [2020-10-28 12:27:38,134 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 12:27:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:52,021 INFO L93 Difference]: Finished difference Result 172638 states and 228403 transitions. [2020-10-28 12:27:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:27:52,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-28 12:27:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:52,495 INFO L225 Difference]: With dead ends: 172638 [2020-10-28 12:27:52,495 INFO L226 Difference]: Without dead ends: 88887 [2020-10-28 12:27:52,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:27:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88887 states. [2020-10-28 12:27:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88887 to 88768. [2020-10-28 12:27:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88768 states. [2020-10-28 12:27:54,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88768 states to 88768 states and 117083 transitions. [2020-10-28 12:27:54,596 INFO L78 Accepts]: Start accepts. Automaton has 88768 states and 117083 transitions. Word has length 311 [2020-10-28 12:27:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:54,597 INFO L481 AbstractCegarLoop]: Abstraction has 88768 states and 117083 transitions. [2020-10-28 12:27:54,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 88768 states and 117083 transitions. [2020-10-28 12:27:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-28 12:27:54,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:54,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:54,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:27:54,616 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:54,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:54,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1340931684, now seen corresponding path program 1 times [2020-10-28 12:27:54,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:54,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114846446] [2020-10-28 12:27:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:55,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:55,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-28 12:27:55,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:55,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-10-28 12:27:55,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:55,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:55,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:55,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:27:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 12:27:55,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:55,909 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:27:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:55,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:55,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:55,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:55,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:27:55,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:55,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:55,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:55,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:55,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:56,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:56,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:27:56,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:27:56,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:56,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:56,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:56,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:27:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:56,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:56,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:27:56,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:27:56,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:56,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:27:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 12:27:56,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114846446] [2020-10-28 12:27:56,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:56,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:27:56,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248649031] [2020-10-28 12:27:56,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:27:56,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:56,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:27:56,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:27:56,431 INFO L87 Difference]: Start difference. First operand 88768 states and 117083 transitions. Second operand 5 states. [2020-10-28 12:28:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:16,912 INFO L93 Difference]: Finished difference Result 213787 states and 291687 transitions. [2020-10-28 12:28:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:28:16,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 338 [2020-10-28 12:28:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:17,453 INFO L225 Difference]: With dead ends: 213787 [2020-10-28 12:28:17,453 INFO L226 Difference]: Without dead ends: 125811 [2020-10-28 12:28:17,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:28:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125811 states.