/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:53:56,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:53:56,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:53:56,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:53:56,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:53:56,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:53:56,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:53:56,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:53:56,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:53:56,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:53:56,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:53:56,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:53:56,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:53:56,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:53:56,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:53:56,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:53:56,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:53:56,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:53:56,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:53:56,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:53:56,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:53:56,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:53:56,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:53:56,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:53:56,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:53:56,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:53:56,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:53:56,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:53:56,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:53:56,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:53:56,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:53:56,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:53:56,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:53:56,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:53:56,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:53:56,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:53:56,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:53:56,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:53:56,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:53:56,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:53:56,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:53:56,870 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 06:53:56,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:53:56,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:53:56,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:53:56,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:53:56,901 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:53:56,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:53:56,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:53:56,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:53:56,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:53:56,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:53:56,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:53:56,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:53:56,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:53:56,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:53:56,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:53:56,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:53:56,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:53:56,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:53:56,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:53:56,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:53:56,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:53:56,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:53:56,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:53:56,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:53:56,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:53:56,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:53:56,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:53:56,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:53:56,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:53:56,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:53:57,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:53:57,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:53:57,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:53:57,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:53:57,370 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:53:57,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05.c [2020-10-29 06:53:57,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f51501ac/5ec1d8b6bb964e049c9ae010e09ea31f/FLAGa4d2194de [2020-10-29 06:53:58,399 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:53:58,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label05.c [2020-10-29 06:53:58,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f51501ac/5ec1d8b6bb964e049c9ae010e09ea31f/FLAGa4d2194de [2020-10-29 06:53:58,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f51501ac/5ec1d8b6bb964e049c9ae010e09ea31f [2020-10-29 06:53:58,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:53:58,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:53:58,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:53:58,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:53:58,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:53:58,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:53:58" (1/1) ... [2020-10-29 06:53:58,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f765300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:58, skipping insertion in model container [2020-10-29 06:53:58,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:53:58" (1/1) ... [2020-10-29 06:53:58,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:53:59,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:54:00,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:54:00,452 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:54:01,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:54:01,187 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:54:01,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01 WrapperNode [2020-10-29 06:54:01,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:54:01,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:54:01,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:54:01,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:54:01,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01" (1/1) ... [2020-10-29 06:54:01,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01" (1/1) ... [2020-10-29 06:54:01,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01" (1/1) ... [2020-10-29 06:54:01,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01" (1/1) ... [2020-10-29 06:54:01,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01" (1/1) ... [2020-10-29 06:54:01,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01" (1/1) ... [2020-10-29 06:54:01,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01" (1/1) ... [2020-10-29 06:54:01,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:54:01,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:54:01,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:54:01,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:54:01,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01" (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 06:54:01,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:54:01,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:54:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:54:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:54:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:54:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:54:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:54:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:54:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:54:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:54:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:54:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:54:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:54:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:54:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:54:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:54:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:54:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:54:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:54:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:54:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:54:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:54:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:54:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:54:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:54:06,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:54:06,791 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:54:06,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:54:06 BoogieIcfgContainer [2020-10-29 06:54:06,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:54:06,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:54:06,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:54:06,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:54:06,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:53:58" (1/3) ... [2020-10-29 06:54:06,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293adc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:54:06, skipping insertion in model container [2020-10-29 06:54:06,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:01" (2/3) ... [2020-10-29 06:54:06,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293adc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:54:06, skipping insertion in model container [2020-10-29 06:54:06,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:54:06" (3/3) ... [2020-10-29 06:54:06,807 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label05.c [2020-10-29 06:54:06,821 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:54:06,828 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:54:06,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:54:06,879 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:54:06,879 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:54:06,879 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:54:06,879 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:54:06,879 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:54:06,880 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:54:06,880 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:54:06,880 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:54:06,917 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:54:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 06:54:06,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:06,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:06,933 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:06,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:06,940 INFO L82 PathProgramCache]: Analyzing trace with hash -947553692, now seen corresponding path program 1 times [2020-10-29 06:54:06,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:06,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487711796] [2020-10-29 06:54:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:54:07,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:07,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-29 06:54:07,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:54:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:54:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:54:08,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:08,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:08,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:08,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 06:54:08,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:08,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:08,198 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 06:54:08,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487711796] [2020-10-29 06:54:08,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:54:08,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:54:08,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151591383] [2020-10-29 06:54:08,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:54:08,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:08,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:54:08,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:54:08,237 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 06:54:20,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:20,180 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:54:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:54:20,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-29 06:54:20,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:20,216 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:54:20,216 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:54:20,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:54:20,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:54:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:54:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:54:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2864 transitions. [2020-10-29 06:54:20,407 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2864 transitions. Word has length 66 [2020-10-29 06:54:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:20,408 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2864 transitions. [2020-10-29 06:54:20,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:54:20,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2864 transitions. [2020-10-29 06:54:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 06:54:20,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:20,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:20,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:54:20,416 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:20,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1678769650, now seen corresponding path program 1 times [2020-10-29 06:54:20,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:20,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480546466] [2020-10-29 06:54:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:20,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:21,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:21,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 06:54:21,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:54:21,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1347 [2020-10-29 06:54:21,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:21,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:21,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:54:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 06:54:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 06:54:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:22,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:22,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:22,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:54:22,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:22,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:22,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:22,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:22,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:22,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:22,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:54:22,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:22,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 06:54:22,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:22,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 06:54:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:54:22,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480546466] [2020-10-29 06:54:22,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:22,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:54:22,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837938091] [2020-10-29 06:54:22,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:54:22,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:22,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:54:22,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:54:22,250 INFO L87 Difference]: Start difference. First operand 1554 states and 2864 transitions. Second operand 6 states. [2020-10-29 06:54:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:34,396 INFO L93 Difference]: Finished difference Result 4670 states and 8669 transitions. [2020-10-29 06:54:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:54:34,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-29 06:54:34,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:34,431 INFO L225 Difference]: With dead ends: 4670 [2020-10-29 06:54:34,431 INFO L226 Difference]: Without dead ends: 3122 [2020-10-29 06:54:34,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-10-29 06:54:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3107. [2020-10-29 06:54:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-10-29 06:54:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5576 transitions. [2020-10-29 06:54:34,533 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5576 transitions. Word has length 135 [2020-10-29 06:54:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:34,534 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5576 transitions. [2020-10-29 06:54:34,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:54:34,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5576 transitions. [2020-10-29 06:54:34,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 06:54:34,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:34,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 06:54:34,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:54:34,539 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:34,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:34,540 INFO L82 PathProgramCache]: Analyzing trace with hash -446429118, now seen corresponding path program 1 times [2020-10-29 06:54:34,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:34,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173368585] [2020-10-29 06:54:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:35,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:35,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 06:54:35,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:54:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1251 [2020-10-29 06:54:35,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:35,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:54:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:54:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:35,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:35,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:35,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:54:35,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:35,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:36,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:54:36,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:36,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 06:54:36,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:54:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:54:36,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173368585] [2020-10-29 06:54:36,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:36,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:54:36,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765176445] [2020-10-29 06:54:36,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:54:36,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:36,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:54:36,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:54:36,238 INFO L87 Difference]: Start difference. First operand 3107 states and 5576 transitions. Second operand 6 states. [2020-10-29 06:54:49,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:49,682 INFO L93 Difference]: Finished difference Result 9370 states and 16984 transitions. [2020-10-29 06:54:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:54:49,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-10-29 06:54:49,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:49,722 INFO L225 Difference]: With dead ends: 9370 [2020-10-29 06:54:49,722 INFO L226 Difference]: Without dead ends: 6269 [2020-10-29 06:54:49,731 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 06:54:49,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2020-10-29 06:54:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 6243. [2020-10-29 06:54:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6243 states. [2020-10-29 06:54:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6243 states to 6243 states and 9658 transitions. [2020-10-29 06:54:49,921 INFO L78 Accepts]: Start accepts. Automaton has 6243 states and 9658 transitions. Word has length 141 [2020-10-29 06:54:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:49,922 INFO L481 AbstractCegarLoop]: Abstraction has 6243 states and 9658 transitions. [2020-10-29 06:54:49,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:54:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6243 states and 9658 transitions. [2020-10-29 06:54:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 06:54:49,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:49,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:49,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:54:49,927 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:49,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:49,927 INFO L82 PathProgramCache]: Analyzing trace with hash -682587140, now seen corresponding path program 1 times [2020-10-29 06:54:49,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:49,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366781883] [2020-10-29 06:54:49,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:51,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:51,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 06:54:51,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:54:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-10-29 06:54:51,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:51,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:54:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 06:54:51,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:51,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:51,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:51,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:51,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:51,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:54:51,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:51,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:51,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 06:54:51,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 06:54:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:51,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 06:54:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:54:51,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366781883] [2020-10-29 06:54:51,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:54:51,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:54:51,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127469133] [2020-10-29 06:54:51,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:51,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:52,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:52,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:52,000 INFO L87 Difference]: Start difference. First operand 6243 states and 9658 transitions. Second operand 7 states. [2020-10-29 06:54:52,155 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:55:07,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:07,598 INFO L93 Difference]: Finished difference Result 15879 states and 25071 transitions. [2020-10-29 06:55:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:55:07,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-29 06:55:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:07,649 INFO L225 Difference]: With dead ends: 15879 [2020-10-29 06:55:07,649 INFO L226 Difference]: Without dead ends: 9642 [2020-10-29 06:55:07,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:55:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9642 states. [2020-10-29 06:55:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9642 to 9512. [2020-10-29 06:55:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9512 states. [2020-10-29 06:55:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 13775 transitions. [2020-10-29 06:55:08,026 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 13775 transitions. Word has length 166 [2020-10-29 06:55:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:08,027 INFO L481 AbstractCegarLoop]: Abstraction has 9512 states and 13775 transitions. [2020-10-29 06:55:08,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:55:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 13775 transitions. [2020-10-29 06:55:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 06:55:08,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:08,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:55:08,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:55:08,034 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:08,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:08,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1949206530, now seen corresponding path program 1 times [2020-10-29 06:55:08,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:08,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971889602] [2020-10-29 06:55:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:13,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:13,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-29 06:55:13,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:55:13,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 06:55:13,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:13,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:55:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 06:55:13,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:13,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:13,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:13,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:13,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:55:13,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:13,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 06:55:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:13,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:13,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:13,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:13,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:55:13,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:13,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-29 06:55:13,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:13,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:55:13,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:13,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 06:55:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:13,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:55:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 06:55:13,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:13,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:13,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:13,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:13,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 06:55:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-29 06:55:13,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971889602] [2020-10-29 06:55:13,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:13,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:55:13,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246663549] [2020-10-29 06:55:13,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:13,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:13,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:13,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:13,831 INFO L87 Difference]: Start difference. First operand 9512 states and 13775 transitions. Second operand 7 states. [2020-10-29 06:55:13,980 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:55:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:30,100 INFO L93 Difference]: Finished difference Result 28169 states and 42932 transitions. [2020-10-29 06:55:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:55:30,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-29 06:55:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:30,189 INFO L225 Difference]: With dead ends: 28169 [2020-10-29 06:55:30,190 INFO L226 Difference]: Without dead ends: 18663 [2020-10-29 06:55:30,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:55:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18663 states. [2020-10-29 06:55:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18663 to 17648. [2020-10-29 06:55:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17648 states. [2020-10-29 06:55:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17648 states to 17648 states and 24746 transitions. [2020-10-29 06:55:31,017 INFO L78 Accepts]: Start accepts. Automaton has 17648 states and 24746 transitions. Word has length 221 [2020-10-29 06:55:31,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:31,018 INFO L481 AbstractCegarLoop]: Abstraction has 17648 states and 24746 transitions. [2020-10-29 06:55:31,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:55:31,018 INFO L276 IsEmpty]: Start isEmpty. Operand 17648 states and 24746 transitions. [2020-10-29 06:55:31,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 06:55:31,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:31,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:55:31,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:55:31,024 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:31,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1586500314, now seen corresponding path program 1 times [2020-10-29 06:55:31,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:31,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135231635] [2020-10-29 06:55:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:31,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:31,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:31,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:31,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:32,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:32,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 06:55:32,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:55:32,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1867 [2020-10-29 06:55:32,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:32,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:55:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:55:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:33,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:33,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:55:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:33,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:55:33,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 06:55:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:33,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:55:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:55:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:33,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:33,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:33,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 06:55:33,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 06:55:33,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:33,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 06:55:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:55:33,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135231635] [2020-10-29 06:55:33,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:33,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:55:33,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545828778] [2020-10-29 06:55:33,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:33,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:33,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:33,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:33,658 INFO L87 Difference]: Start difference. First operand 17648 states and 24746 transitions. Second operand 7 states. [2020-10-29 06:55:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:50,380 INFO L93 Difference]: Finished difference Result 28443 states and 40888 transitions. [2020-10-29 06:55:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:55:50,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-29 06:55:50,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:50,413 INFO L225 Difference]: With dead ends: 28443 [2020-10-29 06:55:50,414 INFO L226 Difference]: Without dead ends: 10008 [2020-10-29 06:55:50,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:55:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10008 states. [2020-10-29 06:55:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10008 to 9682. [2020-10-29 06:55:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9682 states. [2020-10-29 06:55:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9682 states to 9682 states and 12318 transitions. [2020-10-29 06:55:50,710 INFO L78 Accepts]: Start accepts. Automaton has 9682 states and 12318 transitions. Word has length 241 [2020-10-29 06:55:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:50,711 INFO L481 AbstractCegarLoop]: Abstraction has 9682 states and 12318 transitions. [2020-10-29 06:55:50,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:55:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 9682 states and 12318 transitions. [2020-10-29 06:55:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 06:55:50,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:50,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:50,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:55:50,719 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:50,720 INFO L82 PathProgramCache]: Analyzing trace with hash 290602442, now seen corresponding path program 1 times [2020-10-29 06:55:50,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:50,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521714525] [2020-10-29 06:55:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:52,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:53,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:53,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 06:55:53,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:55:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2207 [2020-10-29 06:55:53,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:53,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:55:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-29 06:55:53,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:53,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:53,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:53,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:53,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:53,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:55:53,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:53,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:53,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:53,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:53,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:53,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 06:55:53,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-29 06:55:53,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:53,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-29 06:55:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:55:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:55:54,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521714525] [2020-10-29 06:55:54,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:55:54,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:55:54,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56655743] [2020-10-29 06:55:54,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:54,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:54,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:54,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:54,157 INFO L87 Difference]: Start difference. First operand 9682 states and 12318 transitions. Second operand 7 states. [2020-10-29 06:56:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:12,156 INFO L93 Difference]: Finished difference Result 23793 states and 30134 transitions. [2020-10-29 06:56:12,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:56:12,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-29 06:56:12,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:12,216 INFO L225 Difference]: With dead ends: 23793 [2020-10-29 06:56:12,217 INFO L226 Difference]: Without dead ends: 14045 [2020-10-29 06:56:12,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:56:12,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14045 states. [2020-10-29 06:56:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14045 to 12921. [2020-10-29 06:56:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12921 states. [2020-10-29 06:56:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12921 states to 12921 states and 15654 transitions. [2020-10-29 06:56:12,549 INFO L78 Accepts]: Start accepts. Automaton has 12921 states and 15654 transitions. Word has length 265 [2020-10-29 06:56:12,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:12,550 INFO L481 AbstractCegarLoop]: Abstraction has 12921 states and 15654 transitions. [2020-10-29 06:56:12,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 12921 states and 15654 transitions. [2020-10-29 06:56:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-29 06:56:12,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:12,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:56:12,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:56:12,556 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:12,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:12,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1126448496, now seen corresponding path program 1 times [2020-10-29 06:56:12,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:12,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301011552] [2020-10-29 06:56:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:12,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:12,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:13,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:15,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:15,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-29 06:56:15,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:56:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2462 [2020-10-29 06:56:15,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:15,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:56:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:56:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 06:56:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:15,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:15,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:15,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:15,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:56:15,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:15,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:56:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:56:15,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:15,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:15,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:15,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:56:15,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 06:56:15,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:15,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:56:15,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:15,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:56:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:15,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:15,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:15,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:15,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:56:15,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:56:15,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:56:15,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:15,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:15,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:15,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:56:15,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:56:15,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301011552] [2020-10-29 06:56:15,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:15,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:56:15,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160651004] [2020-10-29 06:56:15,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:56:15,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:15,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:56:15,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:56:15,824 INFO L87 Difference]: Start difference. First operand 12921 states and 15654 transitions. Second operand 6 states. [2020-10-29 06:56:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:42,827 INFO L93 Difference]: Finished difference Result 41732 states and 54294 transitions. [2020-10-29 06:56:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:56:42,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2020-10-29 06:56:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:42,907 INFO L225 Difference]: With dead ends: 41732 [2020-10-29 06:56:42,908 INFO L226 Difference]: Without dead ends: 28008 [2020-10-29 06:56:42,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:56:42,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28008 states. [2020-10-29 06:56:43,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28008 to 26442. [2020-10-29 06:56:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26442 states. [2020-10-29 06:56:43,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26442 states to 26442 states and 32636 transitions. [2020-10-29 06:56:43,510 INFO L78 Accepts]: Start accepts. Automaton has 26442 states and 32636 transitions. Word has length 286 [2020-10-29 06:56:43,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:43,510 INFO L481 AbstractCegarLoop]: Abstraction has 26442 states and 32636 transitions. [2020-10-29 06:56:43,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:56:43,510 INFO L276 IsEmpty]: Start isEmpty. Operand 26442 states and 32636 transitions. [2020-10-29 06:56:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-29 06:56:43,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:43,523 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:43,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:56:43,524 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2059864606, now seen corresponding path program 1 times [2020-10-29 06:56:43,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:43,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169356503] [2020-10-29 06:56:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:46,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:46,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-29 06:56:46,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:56:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2866 [2020-10-29 06:56:46,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:46,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:56:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 06:56:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 06:56:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:46,848 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:56:46,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:46,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:46,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:46,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:46,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:56:46,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:46,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:56:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:56:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:47,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:47,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 06:56:47,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:47,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 06:56:47,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:47,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:56:47,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 06:56:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:47,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:47,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:56:47,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:56:47,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 06:56:47,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:47,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:56:47,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:47,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 06:56:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:47,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:47,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:47,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:56:47,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:56:47,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:47,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:56:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 354 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-29 06:56:48,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169356503] [2020-10-29 06:56:48,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:48,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:56:48,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345540894] [2020-10-29 06:56:48,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:56:48,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:48,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:56:48,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:56:48,135 INFO L87 Difference]: Start difference. First operand 26442 states and 32636 transitions. Second operand 8 states. [2020-10-29 06:57:05,031 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 06:57:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:14,916 INFO L93 Difference]: Finished difference Result 53467 states and 66564 transitions. [2020-10-29 06:57:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:57:14,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 401 [2020-10-29 06:57:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:14,996 INFO L225 Difference]: With dead ends: 53467 [2020-10-29 06:57:14,996 INFO L226 Difference]: Without dead ends: 27031 [2020-10-29 06:57:15,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:57:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27031 states. [2020-10-29 06:57:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27031 to 26861. [2020-10-29 06:57:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26861 states. [2020-10-29 06:57:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26861 states to 26861 states and 32444 transitions. [2020-10-29 06:57:15,701 INFO L78 Accepts]: Start accepts. Automaton has 26861 states and 32444 transitions. Word has length 401 [2020-10-29 06:57:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:15,702 INFO L481 AbstractCegarLoop]: Abstraction has 26861 states and 32444 transitions. [2020-10-29 06:57:15,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:57:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26861 states and 32444 transitions. [2020-10-29 06:57:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-29 06:57:15,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:15,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:15,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:57:15,720 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:15,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:15,721 INFO L82 PathProgramCache]: Analyzing trace with hash -779031136, now seen corresponding path program 1 times [2020-10-29 06:57:15,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:15,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652468004] [2020-10-29 06:57:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:15,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:18,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:18,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:18,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-29 06:57:18,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:57:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3149 [2020-10-29 06:57:18,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:18,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:57:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 06:57:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 06:57:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:19,244 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:57:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:19,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:19,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:19,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:57:19,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:19,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:19,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:19,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:19,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 06:57:19,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 06:57:19,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:19,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:57:19,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:19,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 06:57:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:19,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:19,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:19,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 06:57:19,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:57:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 06:57:19,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:19,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 06:57:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:19,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 06:57:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:19,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:20,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:20,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:57:20,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 06:57:20,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:20,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:57:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:57:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 323 proven. 38 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 06:57:20,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652468004] [2020-10-29 06:57:20,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:20,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:57:20,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474326316] [2020-10-29 06:57:20,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:57:20,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:20,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:57:20,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:57:20,427 INFO L87 Difference]: Start difference. First operand 26861 states and 32444 transitions. Second operand 9 states. [2020-10-29 06:57:20,614 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:57:22,149 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:57:26,218 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 76