/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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:59:01,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:59:01,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:59:01,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:59:01,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:59:01,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:59:01,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:59:01,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:59:01,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:59:01,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:59:01,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:59:01,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:59:01,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:59:01,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:59:01,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:59:01,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:59:01,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:59:01,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:59:01,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:59:01,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:59:01,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:59:01,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:59:01,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:59:01,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:59:01,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:59:01,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:59:01,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:59:01,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:59:01,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:59:01,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:59:01,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:59:01,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:59:01,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:59:01,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:59:01,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:59:01,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:59:01,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:59:01,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:59:01,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:59:01,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:59:01,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:59:01,848 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 06:59:01,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:59:01,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:59:01,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:59:01,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:59:01,922 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:59:01,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:59:01,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:59:01,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:59:01,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:59:01,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:59:01,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:59:01,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:59:01,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:59:01,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:59:01,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:59:01,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:59:01,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:59:01,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:59:01,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:59:01,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:59:01,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:59:01,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:59:01,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:59:01,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:59:01,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:59:01,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:59:01,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:59:01,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:59:01,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:59:01,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:59:02,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:59:02,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:59:02,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:59:02,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:59:02,461 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:59:02,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-29 06:59:02,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f7f589e4/995dd30f285a449eb8bb72aa6973f2a2/FLAG8e3f4f4ae [2020-10-29 06:59:03,781 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:59:03,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-29 06:59:03,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f7f589e4/995dd30f285a449eb8bb72aa6973f2a2/FLAG8e3f4f4ae [2020-10-29 06:59:04,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f7f589e4/995dd30f285a449eb8bb72aa6973f2a2 [2020-10-29 06:59:04,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:59:04,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:59:04,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:59:04,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:59:04,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:59:04,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:59:04" (1/1) ... [2020-10-29 06:59:04,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa736ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:04, skipping insertion in model container [2020-10-29 06:59:04,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:59:04" (1/1) ... [2020-10-29 06:59:04,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:59:04,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:59:05,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:59:05,886 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:59:06,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:59:06,630 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:59:06,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06 WrapperNode [2020-10-29 06:59:06,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:59:06,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:59:06,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:59:06,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:59:06,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06" (1/1) ... [2020-10-29 06:59:06,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06" (1/1) ... [2020-10-29 06:59:06,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06" (1/1) ... [2020-10-29 06:59:06,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06" (1/1) ... [2020-10-29 06:59:06,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06" (1/1) ... [2020-10-29 06:59:06,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06" (1/1) ... [2020-10-29 06:59:07,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06" (1/1) ... [2020-10-29 06:59:07,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:59:07,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:59:07,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:59:07,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:59:07,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06" (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 06:59:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:59:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:59:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:59:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:59:07,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:59:07,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:59:07,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:59:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:59:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:59:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:59:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:59:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:59:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:59:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:59:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:59:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:59:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:59:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:59:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:59:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:59:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:59:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:59:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:59:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:59:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:59:13,322 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:59:13,322 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:59:13,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:59:13 BoogieIcfgContainer [2020-10-29 06:59:13,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:59:13,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:59:13,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:59:13,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:59:13,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:59:04" (1/3) ... [2020-10-29 06:59:13,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c3c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:59:13, skipping insertion in model container [2020-10-29 06:59:13,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:06" (2/3) ... [2020-10-29 06:59:13,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c3c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:59:13, skipping insertion in model container [2020-10-29 06:59:13,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:59:13" (3/3) ... [2020-10-29 06:59:13,346 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label25.c [2020-10-29 06:59:13,360 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:59:13,367 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:59:13,384 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:59:13,419 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:59:13,420 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:59:13,420 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:59:13,420 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:59:13,420 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:59:13,420 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:59:13,420 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:59:13,421 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:59:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:59:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 06:59:13,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:13,472 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] [2020-10-29 06:59:13,473 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1035873092, now seen corresponding path program 1 times [2020-10-29 06:59:13,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:13,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704065833] [2020-10-29 06:59:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:14,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:14,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 06:59:14,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:14,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-29 06:59:14,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:14,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 06:59:14,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:59:14,469 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:59:14,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:14,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:14,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:14,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:14,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:14,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:59:14,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:14,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:14,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:14,523 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 06:59:14,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704065833] [2020-10-29 06:59:14,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:59:14,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:59:14,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378528063] [2020-10-29 06:59:14,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:59:14,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:14,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:59:14,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:59:14,552 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 06:59:24,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:24,851 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:59:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:59:24,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-29 06:59:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:24,899 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:59:24,899 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:59:24,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:59:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:59:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:59:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:59:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-29 06:59:25,136 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 24 [2020-10-29 06:59:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:25,137 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-29 06:59:25,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:59:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-29 06:59:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 06:59:25,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:25,143 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 06:59:25,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:59:25,143 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:25,144 INFO L82 PathProgramCache]: Analyzing trace with hash -179090554, now seen corresponding path program 1 times [2020-10-29 06:59:25,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:25,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272511943] [2020-10-29 06:59:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:26,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 06:59:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-29 06:59:26,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:26,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:26,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:26,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:59:26,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 06:59:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:26,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:26,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:26,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:26,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 06:59:26,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:26,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:59:26,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:26,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:26,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:26,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:59:26,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:26,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 06:59:26,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:26,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:26,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:26,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:26,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:59:26,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:59:26,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272511943] [2020-10-29 06:59:26,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:59:26,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:59:26,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437016860] [2020-10-29 06:59:26,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:26,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:26,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:26,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:26,980 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-29 06:59:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:40,261 INFO L93 Difference]: Finished difference Result 4784 states and 8428 transitions. [2020-10-29 06:59:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:59:40,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-29 06:59:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:40,288 INFO L225 Difference]: With dead ends: 4784 [2020-10-29 06:59:40,289 INFO L226 Difference]: Without dead ends: 3236 [2020-10-29 06:59:40,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:59:40,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2020-10-29 06:59:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3144. [2020-10-29 06:59:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3144 states. [2020-10-29 06:59:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4843 transitions. [2020-10-29 06:59:40,418 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4843 transitions. Word has length 93 [2020-10-29 06:59:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:40,418 INFO L481 AbstractCegarLoop]: Abstraction has 3144 states and 4843 transitions. [2020-10-29 06:59:40,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4843 transitions. [2020-10-29 06:59:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 06:59:40,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:40,421 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 06:59:40,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:59:40,421 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:40,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:40,422 INFO L82 PathProgramCache]: Analyzing trace with hash 338631354, now seen corresponding path program 1 times [2020-10-29 06:59:40,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:40,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344313327] [2020-10-29 06:59:40,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:40,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:40,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:59:40,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:40,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 06:59:40,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:40,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:40,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:40,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:59:40,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 06:59:40,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:40,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:59:40,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:40,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:40,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:40,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:40,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:59:40,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:40,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 06:59:40,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:40,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:59:40,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:59:41,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344313327] [2020-10-29 06:59:41,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:41,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:59:41,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016783936] [2020-10-29 06:59:41,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:59:41,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:41,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:59:41,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:59:41,049 INFO L87 Difference]: Start difference. First operand 3144 states and 4843 transitions. Second operand 6 states. [2020-10-29 06:59:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:57,118 INFO L93 Difference]: Finished difference Result 7874 states and 12616 transitions. [2020-10-29 06:59:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:59:57,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-29 06:59:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:57,147 INFO L225 Difference]: With dead ends: 7874 [2020-10-29 06:59:57,147 INFO L226 Difference]: Without dead ends: 4736 [2020-10-29 06:59:57,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:59:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2020-10-29 06:59:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 4705. [2020-10-29 06:59:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4705 states. [2020-10-29 06:59:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4705 states to 4705 states and 6478 transitions. [2020-10-29 06:59:57,325 INFO L78 Accepts]: Start accepts. Automaton has 4705 states and 6478 transitions. Word has length 99 [2020-10-29 06:59:57,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:57,326 INFO L481 AbstractCegarLoop]: Abstraction has 4705 states and 6478 transitions. [2020-10-29 06:59:57,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:59:57,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4705 states and 6478 transitions. [2020-10-29 06:59:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 06:59:57,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:57,336 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 06:59:57,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:59:57,336 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:57,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1388624602, now seen corresponding path program 1 times [2020-10-29 06:59:57,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:57,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059900367] [2020-10-29 06:59:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:57,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:58,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:58,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 06:59:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-29 06:59:58,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:58,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 06:59:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:58,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:58,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:58,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:58,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:58,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:59:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:58,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:58,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:58,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:58,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 06:59:58,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:58,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 06:59:58,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:58,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 06:59:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 06:59:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:59:58,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059900367] [2020-10-29 06:59:58,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:59:58,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:59:58,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848859587] [2020-10-29 06:59:58,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:58,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:58,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:58,954 INFO L87 Difference]: Start difference. First operand 4705 states and 6478 transitions. Second operand 7 states. [2020-10-29 07:00:14,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:14,902 INFO L93 Difference]: Finished difference Result 14372 states and 20115 transitions. [2020-10-29 07:00:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:00:14,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-29 07:00:14,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:14,959 INFO L225 Difference]: With dead ends: 14372 [2020-10-29 07:00:14,960 INFO L226 Difference]: Without dead ends: 9673 [2020-10-29 07:00:14,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:00:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9673 states. [2020-10-29 07:00:15,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9673 to 9525. [2020-10-29 07:00:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9525 states. [2020-10-29 07:00:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9525 states to 9525 states and 12209 transitions. [2020-10-29 07:00:15,290 INFO L78 Accepts]: Start accepts. Automaton has 9525 states and 12209 transitions. Word has length 141 [2020-10-29 07:00:15,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:15,292 INFO L481 AbstractCegarLoop]: Abstraction has 9525 states and 12209 transitions. [2020-10-29 07:00:15,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 9525 states and 12209 transitions. [2020-10-29 07:00:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 07:00:15,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:15,300 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:00:15,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:00:15,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:15,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:15,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1144357230, now seen corresponding path program 1 times [2020-10-29 07:00:15,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:15,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271504293] [2020-10-29 07:00:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:15,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:15,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:16,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:16,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 07:00:16,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-29 07:00:16,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:16,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:16,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:00:16,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:16,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 07:00:16,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:16,837 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:00:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:16,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:16,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:16,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:16,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:16,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:00:16,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:16,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:16,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:16,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:17,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:17,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:00:17,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-29 07:00:17,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:17,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:00:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:00:17,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271504293] [2020-10-29 07:00:17,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:17,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:00:17,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105382742] [2020-10-29 07:00:17,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:00:17,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:17,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:00:17,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:00:17,386 INFO L87 Difference]: Start difference. First operand 9525 states and 12209 transitions. Second operand 5 states. [2020-10-29 07:00:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:31,168 INFO L93 Difference]: Finished difference Result 26946 states and 35759 transitions. [2020-10-29 07:00:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:00:31,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-29 07:00:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:31,246 INFO L225 Difference]: With dead ends: 26946 [2020-10-29 07:00:31,246 INFO L226 Difference]: Without dead ends: 17427 [2020-10-29 07:00:31,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:00:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2020-10-29 07:00:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 17396. [2020-10-29 07:00:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17396 states. [2020-10-29 07:00:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17396 states to 17396 states and 22860 transitions. [2020-10-29 07:00:31,742 INFO L78 Accepts]: Start accepts. Automaton has 17396 states and 22860 transitions. Word has length 169 [2020-10-29 07:00:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:31,743 INFO L481 AbstractCegarLoop]: Abstraction has 17396 states and 22860 transitions. [2020-10-29 07:00:31,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:00:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 17396 states and 22860 transitions. [2020-10-29 07:00:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 07:00:31,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:31,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:00:31,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:00:31,749 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:31,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1599983696, now seen corresponding path program 1 times [2020-10-29 07:00:31,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:31,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026472251] [2020-10-29 07:00:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:32,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:33,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:33,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:00:33,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:00:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-29 07:00:33,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:33,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:00:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 07:00:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:33,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:33,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:33,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:33,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:33,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:33,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:00:33,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:33,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:33,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:33,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:34,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:34,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:00:34,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 07:00:34,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:34,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:34,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:34,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:00:34,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:00:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:34,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:34,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:34,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:00:34,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 07:00:34,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:34,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:00:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:00:34,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026472251] [2020-10-29 07:00:34,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:34,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:00:34,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880447466] [2020-10-29 07:00:34,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:00:34,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:34,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:00:34,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:00:34,380 INFO L87 Difference]: Start difference. First operand 17396 states and 22860 transitions. Second operand 8 states. [2020-10-29 07:00:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:49,946 INFO L93 Difference]: Finished difference Result 50406 states and 69453 transitions. [2020-10-29 07:00:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:00:49,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-10-29 07:00:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:50,194 INFO L225 Difference]: With dead ends: 50406 [2020-10-29 07:00:50,196 INFO L226 Difference]: Without dead ends: 33016 [2020-10-29 07:00:50,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:00:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33016 states. [2020-10-29 07:00:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33016 to 30411. [2020-10-29 07:00:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30411 states. [2020-10-29 07:00:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30411 states to 30411 states and 39549 transitions. [2020-10-29 07:00:51,135 INFO L78 Accepts]: Start accepts. Automaton has 30411 states and 39549 transitions. Word has length 180 [2020-10-29 07:00:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:51,135 INFO L481 AbstractCegarLoop]: Abstraction has 30411 states and 39549 transitions. [2020-10-29 07:00:51,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:00:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 30411 states and 39549 transitions. [2020-10-29 07:00:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-29 07:00:51,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:51,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:00:51,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:00:51,143 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:51,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:51,146 INFO L82 PathProgramCache]: Analyzing trace with hash -461929898, now seen corresponding path program 1 times [2020-10-29 07:00:51,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:51,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41170104] [2020-10-29 07:00:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:51,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:54,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:54,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 07:00:54,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:00:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3662 [2020-10-29 07:00:54,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:54,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:00:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-29 07:00:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:55,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:55,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:55,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:55,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:00:55,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:55,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:55,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:55,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:55,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:00:55,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-29 07:00:55,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:55,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:00:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:55,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:00:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:55,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:55,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:55,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:00:55,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:55,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:00:55,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:55,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:00:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:00:55,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41170104] [2020-10-29 07:00:55,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:55,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:00:55,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489562584] [2020-10-29 07:00:55,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:55,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:55,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:55,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:55,983 INFO L87 Difference]: Start difference. First operand 30411 states and 39549 transitions. Second operand 7 states. [2020-10-29 07:01:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:11,727 INFO L93 Difference]: Finished difference Result 59210 states and 80172 transitions. [2020-10-29 07:01:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:01:11,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-29 07:01:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:11,836 INFO L225 Difference]: With dead ends: 59210 [2020-10-29 07:01:11,837 INFO L226 Difference]: Without dead ends: 28805 [2020-10-29 07:01:11,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:01:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28805 states. [2020-10-29 07:01:12,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28805 to 23759. [2020-10-29 07:01:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23759 states. [2020-10-29 07:01:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23759 states to 23759 states and 29313 transitions. [2020-10-29 07:01:12,475 INFO L78 Accepts]: Start accepts. Automaton has 23759 states and 29313 transitions. Word has length 277 [2020-10-29 07:01:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:12,476 INFO L481 AbstractCegarLoop]: Abstraction has 23759 states and 29313 transitions. [2020-10-29 07:01:12,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 23759 states and 29313 transitions. [2020-10-29 07:01:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-29 07:01:12,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:12,491 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-29 07:01:12,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:01:12,491 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash 634012558, now seen corresponding path program 1 times [2020-10-29 07:01:12,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:12,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029655578] [2020-10-29 07:01:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:17,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:17,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-29 07:01:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:01:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 07:01:17,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:17,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:01:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:01:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:17,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:17,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:17,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:17,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:01:17,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:17,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:17,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:18,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:18,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:01:18,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 07:01:18,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:18,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:01:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:01:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:18,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:18,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:01:18,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:01:18,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:18,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:01:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:01:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-29 07:01:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:18,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:18,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:18,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:01:18,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:01:18,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:18,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 07:01:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:18,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:18,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 07:01:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:18,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:18,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:01:18,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:18,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:01:18,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:18,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:18,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:18,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:01:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:18,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 64 proven. 208 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-29 07:01:19,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029655578] [2020-10-29 07:01:19,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:19,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:01:19,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211372366] [2020-10-29 07:01:19,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:19,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:19,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:19,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:19,136 INFO L87 Difference]: Start difference. First operand 23759 states and 29313 transitions. Second operand 7 states. [2020-10-29 07:01:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:35,068 INFO L93 Difference]: Finished difference Result 47337 states and 58960 transitions. [2020-10-29 07:01:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:01:35,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 395 [2020-10-29 07:01:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:35,155 INFO L225 Difference]: With dead ends: 47337 [2020-10-29 07:01:35,156 INFO L226 Difference]: Without dead ends: 24353 [2020-10-29 07:01:35,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:01:35,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24353 states. [2020-10-29 07:01:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24353 to 23982. [2020-10-29 07:01:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23982 states. [2020-10-29 07:01:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23982 states to 23982 states and 29703 transitions. [2020-10-29 07:01:36,003 INFO L78 Accepts]: Start accepts. Automaton has 23982 states and 29703 transitions. Word has length 395 [2020-10-29 07:01:36,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:36,004 INFO L481 AbstractCegarLoop]: Abstraction has 23982 states and 29703 transitions. [2020-10-29 07:01:36,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 23982 states and 29703 transitions. [2020-10-29 07:01:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-29 07:01:36,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:36,035 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:01:36,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:01:36,035 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash 816100252, now seen corresponding path program 1 times [2020-10-29 07:01:36,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:36,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960734256] [2020-10-29 07:01:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:36,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:41,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-29 07:01:41,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:01:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 07:01:41,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:41,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:01:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:01:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-10-29 07:01:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:41,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:41,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:41,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:01:41,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:41,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:41,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:41,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:01:41,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:41,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 07:01:41,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:41,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:01:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:01:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:41,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:01:41,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:01:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 07:01:41,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:41,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:01:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:42,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-29 07:01:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:42,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:42,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:01:42,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 07:01:42,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:42,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:42,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:42,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:01:42,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 07:01:42,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960734256] [2020-10-29 07:01:42,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:42,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:01:42,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062680444] [2020-10-29 07:01:42,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:01:42,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:42,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:01:42,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:01:42,485 INFO L87 Difference]: Start difference. First operand 23982 states and 29703 transitions. Second operand 8 states. [2020-10-29 07:02:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:24,411 INFO L93 Difference]: Finished difference Result 90496 states and 117897 transitions. [2020-10-29 07:02:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:02:24,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 394 [2020-10-29 07:02:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:24,783 INFO L225 Difference]: With dead ends: 90496 [2020-10-29 07:02:24,783 INFO L226 Difference]: Without dead ends: 67289 [2020-10-29 07:02:24,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:02:24,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67289 states. [2020-10-29 07:02:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67289 to 64147. [2020-10-29 07:02:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64147 states. [2020-10-29 07:02:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64147 states to 64147 states and 80479 transitions. [2020-10-29 07:02:26,956 INFO L78 Accepts]: Start accepts. Automaton has 64147 states and 80479 transitions. Word has length 394 [2020-10-29 07:02:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:26,958 INFO L481 AbstractCegarLoop]: Abstraction has 64147 states and 80479 transitions. [2020-10-29 07:02:26,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:02:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 64147 states and 80479 transitions. [2020-10-29 07:02:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-29 07:02:27,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:27,066 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:02:27,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:02:27,067 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:27,067 INFO L82 PathProgramCache]: Analyzing trace with hash -924975614, now seen corresponding path program 1 times [2020-10-29 07:02:27,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:27,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779048912] [2020-10-29 07:02:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:27,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:31,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:31,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-29 07:02:31,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:02:31,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4151 [2020-10-29 07:02:31,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:31,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:31,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:31,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-29 07:02:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-29 07:02:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:31,880 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:02:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:02:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:31,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:02:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:02:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:31,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:32,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:32,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:02:32,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:02:32,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:32,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:02:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:02:32,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:32,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:02:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:32,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:32,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 07:02:32,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:32,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:02:32,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:32,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:32,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 07:02:32,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-29 07:02:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:33,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:33,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 07:02:33,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-29 07:02:33,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:33,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-29 07:02:33,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-29 07:02:33,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779048912] [2020-10-29 07:02:33,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:33,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:02:33,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144971274] [2020-10-29 07:02:33,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:02:33,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:33,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:02:33,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:02:33,628 INFO L87 Difference]: Start difference. First operand 64147 states and 80479 transitions. Second operand 7 states. [2020-10-29 07:02:36,058 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68