/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:04:25,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:04:25,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:04:25,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:04:25,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:04:25,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:04:25,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:04:25,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:04:25,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:04:25,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:04:25,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:04:25,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:04:25,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:04:25,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:04:25,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:04:25,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:04:25,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:04:25,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:04:25,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:04:25,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:04:25,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:04:25,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:04:25,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:04:25,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:04:25,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:04:25,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:04:25,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:04:25,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:04:25,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:04:25,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:04:25,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:04:25,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:04:25,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:04:25,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:04:25,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:04:25,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:04:25,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:04:25,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:04:25,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:04:25,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:04:25,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:04:25,691 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 [2020-10-29 07:04:25,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:04:25,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:04:25,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:04:25,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:04:25,763 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:04:25,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:04:25,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:04:25,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:04:25,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:04:25,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:04:25,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:04:25,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:04:25,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:04:25,767 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:04:25,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:04:25,767 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:04:25,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:04:25,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:04:25,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:04:25,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:04:25,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:04:25,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:04:25,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:04:25,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:04:25,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:04:25,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:04:25,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:04:25,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:04:25,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:04:25,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:04:26,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:04:26,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:04:26,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:04:26,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:04:26,341 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:04:26,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-29 07:04:26,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac9eb95e8/234ff997efe242af854c12008dc5b5e2/FLAG836f49156 [2020-10-29 07:04:27,650 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:04:27,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-29 07:04:27,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac9eb95e8/234ff997efe242af854c12008dc5b5e2/FLAG836f49156 [2020-10-29 07:04:28,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac9eb95e8/234ff997efe242af854c12008dc5b5e2 [2020-10-29 07:04:28,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:04:28,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:04:28,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:04:28,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:04:28,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:04:28,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:04:28" (1/1) ... [2020-10-29 07:04:28,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb0b7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:28, skipping insertion in model container [2020-10-29 07:04:28,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:04:28" (1/1) ... [2020-10-29 07:04:28,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:04:28,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:04:29,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:04:29,832 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:04:30,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:04:30,606 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:04:30,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30 WrapperNode [2020-10-29 07:04:30,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:04:30,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:04:30,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:04:30,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:04:30,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30" (1/1) ... [2020-10-29 07:04:30,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30" (1/1) ... [2020-10-29 07:04:30,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30" (1/1) ... [2020-10-29 07:04:30,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30" (1/1) ... [2020-10-29 07:04:30,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30" (1/1) ... [2020-10-29 07:04:30,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30" (1/1) ... [2020-10-29 07:04:31,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30" (1/1) ... [2020-10-29 07:04:31,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:04:31,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:04:31,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:04:31,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:04:31,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30" (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 [2020-10-29 07:04:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:04:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:04:31,182 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:04:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:04:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:04:31,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:04:31,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:04:31,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:04:31,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:04:31,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:04:31,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:04:31,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:04:31,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:04:31,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:04:31,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:04:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:04:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:04:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:04:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:04:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:04:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:04:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:04:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:04:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:04:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:04:37,898 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:04:37,898 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:04:37,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:04:37 BoogieIcfgContainer [2020-10-29 07:04:37,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:04:37,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:04:37,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:04:37,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:04:37,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:04:28" (1/3) ... [2020-10-29 07:04:37,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5d4e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:04:37, skipping insertion in model container [2020-10-29 07:04:37,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:30" (2/3) ... [2020-10-29 07:04:37,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5d4e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:04:37, skipping insertion in model container [2020-10-29 07:04:37,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:04:37" (3/3) ... [2020-10-29 07:04:37,915 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label43.c [2020-10-29 07:04:37,931 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:04:37,938 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:04:37,957 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:04:37,999 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:04:38,000 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:04:38,000 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:04:38,000 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:04:38,000 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:04:38,000 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:04:38,000 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:04:38,001 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:04:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:04:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 07:04:38,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:38,060 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] [2020-10-29 07:04:38,061 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:38,070 INFO L82 PathProgramCache]: Analyzing trace with hash -360488676, now seen corresponding path program 1 times [2020-10-29 07:04:38,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:38,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625720844] [2020-10-29 07:04:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:38,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:38,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 07:04:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-29 07:04:38,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:38,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:04:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:04:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 07:04:38,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:04:39,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:04:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:39,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:39,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:04:39,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:39,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:04:39,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:39,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:39,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:39,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:39,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:04:39,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:04:39,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625720844] [2020-10-29 07:04:39,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:04:39,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:04:39,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520504199] [2020-10-29 07:04:39,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:04:39,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:04:39,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:04:39,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:04:39,337 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:04:52,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:04:52,247 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 07:04:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:04:52,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-29 07:04:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:04:52,285 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 07:04:52,286 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:04:52,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:04:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:04:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 07:04:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 07:04:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-29 07:04:52,490 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 48 [2020-10-29 07:04:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:04:52,491 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-29 07:04:52,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:04:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-29 07:04:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 07:04:52,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:52,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:04:52,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:04:52,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:52,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1809300378, now seen corresponding path program 1 times [2020-10-29 07:04:52,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:52,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226276011] [2020-10-29 07:04:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:52,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:53,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:53,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 07:04:53,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:04:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-29 07:04:53,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:53,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:04:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:04:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 07:04:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:04:53,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:04:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:53,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:53,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:04:53,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:04:53,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:53,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:04:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-29 07:04:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:04:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:54,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:54,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:04:54,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 07:04:54,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:54,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:04:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:04:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:04:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:04:54,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226276011] [2020-10-29 07:04:54,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:04:54,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:04:54,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150954556] [2020-10-29 07:04:54,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:04:54,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:04:54,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:04:54,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:04:54,387 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-29 07:05:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:06,837 INFO L93 Difference]: Finished difference Result 4692 states and 7653 transitions. [2020-10-29 07:05:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:05:06,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-29 07:05:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:06,864 INFO L225 Difference]: With dead ends: 4692 [2020-10-29 07:05:06,865 INFO L226 Difference]: Without dead ends: 3144 [2020-10-29 07:05:06,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:05:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-10-29 07:05:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3126. [2020-10-29 07:05:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-10-29 07:05:06,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4444 transitions. [2020-10-29 07:05:06,989 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4444 transitions. Word has length 123 [2020-10-29 07:05:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:06,990 INFO L481 AbstractCegarLoop]: Abstraction has 3126 states and 4444 transitions. [2020-10-29 07:05:06,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:05:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4444 transitions. [2020-10-29 07:05:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 07:05:06,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:06,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:06,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:05:06,994 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:06,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1956670702, now seen corresponding path program 1 times [2020-10-29 07:05:06,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:06,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142348730] [2020-10-29 07:05:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:07,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:08,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:08,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 07:05:08,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:05:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-29 07:05:08,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:08,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:08,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:05:08,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:08,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:05:08,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:08,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:08,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:08,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:08,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:08,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:05:08,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:08,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:08,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:08,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:08,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:08,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:08,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:08,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:08,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:05:08,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:08,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-29 07:05:08,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:08,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:05:08,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:05:08,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142348730] [2020-10-29 07:05:08,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:05:08,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:05:08,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063474403] [2020-10-29 07:05:08,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:05:08,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:08,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:05:08,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:05:08,994 INFO L87 Difference]: Start difference. First operand 3126 states and 4444 transitions. Second operand 7 states. [2020-10-29 07:05:25,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:25,368 INFO L93 Difference]: Finished difference Result 9560 states and 13723 transitions. [2020-10-29 07:05:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:05:25,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-29 07:05:25,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:25,415 INFO L225 Difference]: With dead ends: 9560 [2020-10-29 07:05:25,416 INFO L226 Difference]: Without dead ends: 6440 [2020-10-29 07:05:25,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:05:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6440 states. [2020-10-29 07:05:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6440 to 6300. [2020-10-29 07:05:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6300 states. [2020-10-29 07:05:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 8423 transitions. [2020-10-29 07:05:25,651 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 8423 transitions. Word has length 127 [2020-10-29 07:05:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:25,651 INFO L481 AbstractCegarLoop]: Abstraction has 6300 states and 8423 transitions. [2020-10-29 07:05:25,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:05:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 8423 transitions. [2020-10-29 07:05:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 07:05:25,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:25,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:25,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:05:25,656 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:25,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1353799026, now seen corresponding path program 1 times [2020-10-29 07:05:25,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:25,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092373417] [2020-10-29 07:05:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:26,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:26,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 07:05:26,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:05:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-10-29 07:05:26,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:26,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:05:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:05:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:27,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:27,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:27,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:27,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:05:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:27,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:27,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:27,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:27,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:05:27,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:27,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 07:05:27,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:27,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:05:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:05:27,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092373417] [2020-10-29 07:05:27,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:05:27,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:05:27,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857363610] [2020-10-29 07:05:27,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:05:27,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:27,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:05:27,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:05:27,519 INFO L87 Difference]: Start difference. First operand 6300 states and 8423 transitions. Second operand 7 states. [2020-10-29 07:05:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:43,667 INFO L93 Difference]: Finished difference Result 19175 states and 26285 transitions. [2020-10-29 07:05:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:05:43,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-29 07:05:43,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:43,753 INFO L225 Difference]: With dead ends: 19175 [2020-10-29 07:05:43,753 INFO L226 Difference]: Without dead ends: 12881 [2020-10-29 07:05:43,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:05:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12881 states. [2020-10-29 07:05:44,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12881 to 12802. [2020-10-29 07:05:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12802 states. [2020-10-29 07:05:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12802 states to 12802 states and 16959 transitions. [2020-10-29 07:05:44,306 INFO L78 Accepts]: Start accepts. Automaton has 12802 states and 16959 transitions. Word has length 161 [2020-10-29 07:05:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:44,307 INFO L481 AbstractCegarLoop]: Abstraction has 12802 states and 16959 transitions. [2020-10-29 07:05:44,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:05:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 12802 states and 16959 transitions. [2020-10-29 07:05:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 07:05:44,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:44,311 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, 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] [2020-10-29 07:05:44,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:05:44,312 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:44,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:44,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1919631598, now seen corresponding path program 1 times [2020-10-29 07:05:44,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:44,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662810561] [2020-10-29 07:05:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:44,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:45,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:45,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-29 07:05:45,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:05:45,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-29 07:05:45,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:45,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:05:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 07:05:45,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:46,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:46,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:46,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:46,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:05:46,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:46,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:05:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:05:46,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:46,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:46,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:46,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:05:46,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:05:46,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:46,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:05:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:05:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:46,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:46,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:05:46,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:46,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:05:46,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:46,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:46,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:46,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:46,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 07:05:46,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:05:46,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662810561] [2020-10-29 07:05:46,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:05:46,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:05:46,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909937010] [2020-10-29 07:05:46,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:05:46,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:46,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:05:46,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:05:46,580 INFO L87 Difference]: Start difference. First operand 12802 states and 16959 transitions. Second operand 8 states. [2020-10-29 07:05:47,377 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:06:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:12,619 INFO L93 Difference]: Finished difference Result 33210 states and 48241 transitions. [2020-10-29 07:06:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:06:12,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-10-29 07:06:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:12,713 INFO L225 Difference]: With dead ends: 33210 [2020-10-29 07:06:12,713 INFO L226 Difference]: Without dead ends: 17242 [2020-10-29 07:06:12,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:06:12,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17242 states. [2020-10-29 07:06:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17242 to 17063. [2020-10-29 07:06:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17063 states. [2020-10-29 07:06:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17063 states to 17063 states and 23088 transitions. [2020-10-29 07:06:13,342 INFO L78 Accepts]: Start accepts. Automaton has 17063 states and 23088 transitions. Word has length 223 [2020-10-29 07:06:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:13,343 INFO L481 AbstractCegarLoop]: Abstraction has 17063 states and 23088 transitions. [2020-10-29 07:06:13,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:06:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 17063 states and 23088 transitions. [2020-10-29 07:06:13,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-29 07:06:13,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:13,350 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, 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] [2020-10-29 07:06:13,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:06:13,351 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:13,352 INFO L82 PathProgramCache]: Analyzing trace with hash -896924468, now seen corresponding path program 1 times [2020-10-29 07:06:13,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:13,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115034789] [2020-10-29 07:06:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:13,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:15,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:15,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-29 07:06:15,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:06:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-29 07:06:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:15,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:06:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 07:06:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:15,324 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:06:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:15,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:15,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:15,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:15,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:06:15,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:15,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:06:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:06:15,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:15,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:15,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:06:15,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 07:06:15,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:15,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:06:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:15,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:06:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:15,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:15,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:06:15,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 07:06:15,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:15,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:06:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:06:16,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115034789] [2020-10-29 07:06:16,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:06:16,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:06:16,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67516216] [2020-10-29 07:06:16,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:06:16,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:16,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:06:16,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:06:16,075 INFO L87 Difference]: Start difference. First operand 17063 states and 23088 transitions. Second operand 6 states. [2020-10-29 07:06:16,209 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:06:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:32,929 INFO L93 Difference]: Finished difference Result 49590 states and 70803 transitions. [2020-10-29 07:06:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:06:32,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 282 [2020-10-29 07:06:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:33,074 INFO L225 Difference]: With dead ends: 49590 [2020-10-29 07:06:33,075 INFO L226 Difference]: Without dead ends: 33300 [2020-10-29 07:06:33,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:06:33,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33300 states. [2020-10-29 07:06:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33300 to 33183. [2020-10-29 07:06:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33183 states. [2020-10-29 07:06:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33183 states to 33183 states and 45171 transitions. [2020-10-29 07:06:34,130 INFO L78 Accepts]: Start accepts. Automaton has 33183 states and 45171 transitions. Word has length 282 [2020-10-29 07:06:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:34,131 INFO L481 AbstractCegarLoop]: Abstraction has 33183 states and 45171 transitions. [2020-10-29 07:06:34,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:06:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 33183 states and 45171 transitions. [2020-10-29 07:06:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-29 07:06:34,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:34,139 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, 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] [2020-10-29 07:06:34,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:06:34,139 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:34,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:34,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1271333972, now seen corresponding path program 1 times [2020-10-29 07:06:34,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:34,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244735522] [2020-10-29 07:06:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:35,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:36,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:36,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-29 07:06:36,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:06:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2717 [2020-10-29 07:06:36,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:36,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:06:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 07:06:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:37,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:37,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:37,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:37,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:06:37,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:37,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:06:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:06:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:37,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:37,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:37,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:37,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:06:37,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:37,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 07:06:37,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:37,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:06:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:06:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:37,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:37,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:37,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:06:37,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:06:37,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:06:37,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:37,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:06:37,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 07:06:37,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244735522] [2020-10-29 07:06:37,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:06:37,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:06:37,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816587925] [2020-10-29 07:06:37,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:06:37,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:37,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:06:37,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:06:37,721 INFO L87 Difference]: Start difference. First operand 33183 states and 45171 transitions. Second operand 5 states. [2020-10-29 07:06:56,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:56,075 INFO L93 Difference]: Finished difference Result 79785 states and 112826 transitions. [2020-10-29 07:06:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:06:56,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-10-29 07:06:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:56,260 INFO L225 Difference]: With dead ends: 79785 [2020-10-29 07:06:56,260 INFO L226 Difference]: Without dead ends: 47375 [2020-10-29 07:06:56,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:06:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47375 states. [2020-10-29 07:06:57,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47375 to 47354. [2020-10-29 07:06:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47354 states. [2020-10-29 07:06:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47354 states to 47354 states and 65777 transitions. [2020-10-29 07:06:58,108 INFO L78 Accepts]: Start accepts. Automaton has 47354 states and 65777 transitions. Word has length 286 [2020-10-29 07:06:58,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:58,112 INFO L481 AbstractCegarLoop]: Abstraction has 47354 states and 65777 transitions. [2020-10-29 07:06:58,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:06:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 47354 states and 65777 transitions. [2020-10-29 07:06:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-29 07:06:58,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:58,126 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, 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] [2020-10-29 07:06:58,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:06:58,127 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:58,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:58,127 INFO L82 PathProgramCache]: Analyzing trace with hash 197188626, now seen corresponding path program 1 times [2020-10-29 07:06:58,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:58,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394149382] [2020-10-29 07:06:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:58,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:00,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:00,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-29 07:07:00,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:07:00,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2340 [2020-10-29 07:07:00,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:00,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:07:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 07:07:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:00,813 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:07:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:00,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:00,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:00,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:07:00,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:00,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:00,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:00,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:01,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:01,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:07:01,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:01,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 07:07:01,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:01,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:01,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:01,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:01,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:07:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:07:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:01,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:01,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:07:01,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:07:01,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-29 07:07:01,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:01,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:07:01,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 125 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:07:01,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394149382] [2020-10-29 07:07:01,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:07:01,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:07:01,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430837487] [2020-10-29 07:07:01,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:01,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:01,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:01,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:01,729 INFO L87 Difference]: Start difference. First operand 47354 states and 65777 transitions. Second operand 7 states. [2020-10-29 07:07:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:32,479 INFO L93 Difference]: Finished difference Result 117516 states and 178295 transitions. [2020-10-29 07:07:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:07:32,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-29 07:07:32,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:33,022 INFO L225 Difference]: With dead ends: 117516 [2020-10-29 07:07:33,022 INFO L226 Difference]: Without dead ends: 70935 [2020-10-29 07:07:33,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:07:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70935 states. [2020-10-29 07:07:35,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70935 to 68914. [2020-10-29 07:07:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68914 states. [2020-10-29 07:07:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68914 states to 68914 states and 94146 transitions. [2020-10-29 07:07:35,811 INFO L78 Accepts]: Start accepts. Automaton has 68914 states and 94146 transitions. Word has length 287 [2020-10-29 07:07:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:35,812 INFO L481 AbstractCegarLoop]: Abstraction has 68914 states and 94146 transitions. [2020-10-29 07:07:35,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:07:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 68914 states and 94146 transitions. [2020-10-29 07:07:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-29 07:07:35,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:35,820 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, 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] [2020-10-29 07:07:35,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:07:35,821 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:35,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:35,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1997799898, now seen corresponding path program 1 times [2020-10-29 07:07:35,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:35,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785573283] [2020-10-29 07:07:35,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:36,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:37,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:41,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:41,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-29 07:07:41,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:07:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 07:07:41,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:41,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:07:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:07:41,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:41,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:41,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:41,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:07:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:41,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:07:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:41,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:41,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:41,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:07:41,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-29 07:07:41,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:41,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:07:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:07:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:41,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:41,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:07:41,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:41,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:07:41,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:41,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-29 07:07:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:41,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 80 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:07:42,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785573283] [2020-10-29 07:07:42,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:07:42,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:07:42,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053122205] [2020-10-29 07:07:42,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:42,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:42,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:42,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:42,268 INFO L87 Difference]: Start difference. First operand 68914 states and 94146 transitions. Second operand 7 states. [2020-10-29 07:07:42,440 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 07:07:45,624 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:08:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:06,131 INFO L93 Difference]: Finished difference Result 142812 states and 197013 transitions. [2020-10-29 07:08:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:08:06,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-29 07:08:06,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:06,509 INFO L225 Difference]: With dead ends: 142812 [2020-10-29 07:08:06,509 INFO L226 Difference]: Without dead ends: 74671 [2020-10-29 07:08:06,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:08:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74671 states.