/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=DEEPEST --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_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:40:23,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:40:23,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:40:23,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:40:23,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:40:23,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:40:23,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:40:23,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:40:23,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:40:23,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:40:23,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:40:23,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:40:23,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:40:23,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:40:23,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:40:23,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:40:23,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:40:23,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:40:23,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:40:23,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:40:23,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:40:23,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:40:23,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:40:23,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:40:23,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:40:23,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:40:23,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:40:23,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:40:23,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:40:23,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:40:23,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:40:23,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:40:23,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:40:23,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:40:23,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:40:23,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:40:23,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:40:23,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:40:23,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:40:23,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:40:23,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:40:23,855 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 [2020-10-27 17:40:23,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:40:23,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:40:23,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:40:23,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:40:23,888 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:40:23,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:40:23,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:40:23,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:40:23,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:40:23,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:40:23,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:40:23,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:40:23,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:40:23,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:40:23,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:40:23,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:40:23,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:40:23,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:40:23,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:40:23,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:40:23,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:40:23,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:40:23,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:40:23,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:40:23,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:40:23,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:40:23,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:40:23,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:40:23,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:40:23,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:40:24,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:40:24,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:40:24,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:40:24,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:40:24,419 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:40:24,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2020-10-27 17:40:24,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/145ee5891/9696416e577649979a020787f82243f8/FLAG0a74bf21a [2020-10-27 17:40:25,635 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:40:25,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2020-10-27 17:40:25,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/145ee5891/9696416e577649979a020787f82243f8/FLAG0a74bf21a [2020-10-27 17:40:26,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/145ee5891/9696416e577649979a020787f82243f8 [2020-10-27 17:40:26,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:40:26,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:40:26,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:40:26,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:40:26,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:40:26,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:40:26" (1/1) ... [2020-10-27 17:40:26,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2251289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:26, skipping insertion in model container [2020-10-27 17:40:26,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:40:26" (1/1) ... [2020-10-27 17:40:26,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:40:26,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:40:27,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:40:27,735 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:40:28,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:40:28,565 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:40:28,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28 WrapperNode [2020-10-27 17:40:28,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:40:28,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:40:28,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:40:28,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:40:28,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28" (1/1) ... [2020-10-27 17:40:28,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28" (1/1) ... [2020-10-27 17:40:28,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28" (1/1) ... [2020-10-27 17:40:28,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28" (1/1) ... [2020-10-27 17:40:28,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28" (1/1) ... [2020-10-27 17:40:28,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28" (1/1) ... [2020-10-27 17:40:28,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28" (1/1) ... [2020-10-27 17:40:28,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:40:28,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:40:28,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:40:28,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:40:28,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28" (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 [2020-10-27 17:40:29,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:40:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:40:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:40:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:40:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:40:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:40:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:40:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:40:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:40:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:40:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:40:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:40:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:40:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:40:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:40:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:40:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:40:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:40:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:40:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:40:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:40:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:40:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:40:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:40:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:40:35,162 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:40:35,163 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:40:35,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:40:35 BoogieIcfgContainer [2020-10-27 17:40:35,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:40:35,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:40:35,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:40:35,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:40:35,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:40:26" (1/3) ... [2020-10-27 17:40:35,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1126e9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:40:35, skipping insertion in model container [2020-10-27 17:40:35,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:28" (2/3) ... [2020-10-27 17:40:35,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1126e9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:40:35, skipping insertion in model container [2020-10-27 17:40:35,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:40:35" (3/3) ... [2020-10-27 17:40:35,186 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label12.c [2020-10-27 17:40:35,207 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:40:35,215 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:40:35,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:40:35,273 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:40:35,273 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:40:35,273 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:40:35,274 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:40:35,274 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:40:35,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:40:35,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:40:35,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:40:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:40:35,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 17:40:35,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:35,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:40:35,330 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:35,340 INFO L82 PathProgramCache]: Analyzing trace with hash 108003572, now seen corresponding path program 1 times [2020-10-27 17:40:35,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:35,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927580873] [2020-10-27 17:40:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:36,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:36,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:40:36,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-27 17:40:36,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:40:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:40:36,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:40:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:40:36,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:36,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:36,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:36,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 17:40:36,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:40:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:40:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:40:36,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927580873] [2020-10-27 17:40:36,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:40:36,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 17:40:36,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000374099] [2020-10-27 17:40:36,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:40:36,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:36,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:40:36,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:40:36,940 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-27 17:40:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:54,673 INFO L93 Difference]: Finished difference Result 3258 states and 6299 transitions. [2020-10-27 17:40:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:40:54,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-27 17:40:54,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:54,732 INFO L225 Difference]: With dead ends: 3258 [2020-10-27 17:40:54,732 INFO L226 Difference]: Without dead ends: 2347 [2020-10-27 17:40:54,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:40:54,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-27 17:40:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-27 17:40:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-27 17:40:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3835 transitions. [2020-10-27 17:40:54,960 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3835 transitions. Word has length 65 [2020-10-27 17:40:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:54,961 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3835 transitions. [2020-10-27 17:40:54,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:40:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3835 transitions. [2020-10-27 17:40:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 17:40:54,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:54,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:40:54,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:40:54,970 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:54,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1166290959, now seen corresponding path program 1 times [2020-10-27 17:40:54,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:54,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74832087] [2020-10-27 17:40:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:55,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:56,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:56,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 17:40:56,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:40:56,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1723 [2020-10-27 17:40:56,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:56,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 17:40:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 17:40:56,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:40:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:56,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:56,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:56,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:40:56,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-27 17:40:57,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:57,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:57,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:57,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 17:40:57,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:57,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 17:40:57,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 17:40:57,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:40:57,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74832087] [2020-10-27 17:40:57,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:57,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:40:57,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318845170] [2020-10-27 17:40:57,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:40:57,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:57,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:40:57,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:40:57,321 INFO L87 Difference]: Start difference. First operand 2332 states and 3835 transitions. Second operand 6 states. [2020-10-27 17:41:18,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:18,406 INFO L93 Difference]: Finished difference Result 9336 states and 15702 transitions. [2020-10-27 17:41:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:41:18,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2020-10-27 17:41:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:18,458 INFO L225 Difference]: With dead ends: 9336 [2020-10-27 17:41:18,458 INFO L226 Difference]: Without dead ends: 7010 [2020-10-27 17:41:18,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:41:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7010 states. [2020-10-27 17:41:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7010 to 6991. [2020-10-27 17:41:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6991 states. [2020-10-27 17:41:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 10991 transitions. [2020-10-27 17:41:18,723 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 10991 transitions. Word has length 143 [2020-10-27 17:41:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:18,727 INFO L481 AbstractCegarLoop]: Abstraction has 6991 states and 10991 transitions. [2020-10-27 17:41:18,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:41:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 10991 transitions. [2020-10-27 17:41:18,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-27 17:41:18,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:18,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:41:18,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:41:18,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:18,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:18,748 INFO L82 PathProgramCache]: Analyzing trace with hash -2144187311, now seen corresponding path program 1 times [2020-10-27 17:41:18,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:18,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743135408] [2020-10-27 17:41:18,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:19,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:20,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:20,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 17:41:20,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:41:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1760 [2020-10-27 17:41:20,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 17:41:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 17:41:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:20,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:20,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:20,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:20,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:41:20,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:20,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:20,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:20,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:21,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:21,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:41:21,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:21,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 17:41:21,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 17:41:21,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:41:21,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743135408] [2020-10-27 17:41:21,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:21,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:41:21,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174494855] [2020-10-27 17:41:21,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:41:21,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:21,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:41:21,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:41:21,150 INFO L87 Difference]: Start difference. First operand 6991 states and 10991 transitions. Second operand 5 states. [2020-10-27 17:41:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:39,947 INFO L93 Difference]: Finished difference Result 20984 states and 33864 transitions. [2020-10-27 17:41:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:41:39,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-27 17:41:39,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:40,057 INFO L225 Difference]: With dead ends: 20984 [2020-10-27 17:41:40,058 INFO L226 Difference]: Without dead ends: 13999 [2020-10-27 17:41:40,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:41:40,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13999 states. [2020-10-27 17:41:40,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13999 to 13977. [2020-10-27 17:41:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13977 states. [2020-10-27 17:41:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13977 states to 13977 states and 21903 transitions. [2020-10-27 17:41:40,579 INFO L78 Accepts]: Start accepts. Automaton has 13977 states and 21903 transitions. Word has length 191 [2020-10-27 17:41:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:40,582 INFO L481 AbstractCegarLoop]: Abstraction has 13977 states and 21903 transitions. [2020-10-27 17:41:40,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:41:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 13977 states and 21903 transitions. [2020-10-27 17:41:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-27 17:41:40,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:40,607 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:41:40,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:41:40,614 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:40,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:40,615 INFO L82 PathProgramCache]: Analyzing trace with hash 173990812, now seen corresponding path program 1 times [2020-10-27 17:41:40,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:40,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098837717] [2020-10-27 17:41:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:40,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:45,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:45,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-27 17:41:45,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:41:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 17:41:45,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-27 17:41:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 17:41:45,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:46,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:46,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:46,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:46,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 17:41:46,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:46,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:46,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:46,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:41:46,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 17:41:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:41:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 17:41:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:46,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:46,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 17:41:46,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-27 17:41:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-27 17:41:46,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 17:41:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 17:41:46,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098837717] [2020-10-27 17:41:46,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:46,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:41:46,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093299295] [2020-10-27 17:41:46,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:41:46,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:46,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:41:46,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:41:46,851 INFO L87 Difference]: Start difference. First operand 13977 states and 21903 transitions. Second operand 5 states. [2020-10-27 17:42:05,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:05,809 INFO L93 Difference]: Finished difference Result 41899 states and 67434 transitions. [2020-10-27 17:42:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:42:05,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 380 [2020-10-27 17:42:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:05,956 INFO L225 Difference]: With dead ends: 41899 [2020-10-27 17:42:05,957 INFO L226 Difference]: Without dead ends: 27928 [2020-10-27 17:42:06,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:42:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27928 states. [2020-10-27 17:42:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27928 to 27916. [2020-10-27 17:42:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27916 states. [2020-10-27 17:42:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27916 states to 27916 states and 40199 transitions. [2020-10-27 17:42:06,908 INFO L78 Accepts]: Start accepts. Automaton has 27916 states and 40199 transitions. Word has length 380 [2020-10-27 17:42:06,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:06,909 INFO L481 AbstractCegarLoop]: Abstraction has 27916 states and 40199 transitions. [2020-10-27 17:42:06,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:42:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 27916 states and 40199 transitions. [2020-10-27 17:42:07,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2020-10-27 17:42:07,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:07,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:42:07,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:42:07,010 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash -691068861, now seen corresponding path program 1 times [2020-10-27 17:42:07,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:07,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941814113] [2020-10-27 17:42:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:12,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 785 [2020-10-27 17:42:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:42:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-27 17:42:12,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 17:42:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 17:42:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 577 [2020-10-27 17:42:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:42:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:12,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:12,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:12,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 17:42:12,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:12,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:12,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:12,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:42:12,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:12,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 17:42:12,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 17:42:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:12,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 17:42:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:13,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:13,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:18,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:18,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-27 17:42:18,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:42:18,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 17:42:18,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:18,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:42:18,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:42:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 581 [2020-10-27 17:42:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:18,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:42:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:19,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:19,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-27 17:42:19,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:19,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 933 [2020-10-27 17:42:19,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:42:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:42:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 293 [2020-10-27 17:42:19,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:42:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:19,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:19,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 17:42:19,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 17:42:19,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:42:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:42:19,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:42:19,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:42:20,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941814113] [2020-10-27 17:42:20,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:20,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:42:20,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136510894] [2020-10-27 17:42:20,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:42:20,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:20,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:42:20,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:42:20,730 INFO L87 Difference]: Start difference. First operand 27916 states and 40199 transitions. Second operand 7 states. [2020-10-27 17:42:22,158 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 17:42:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:46,846 INFO L93 Difference]: Finished difference Result 64924 states and 99202 transitions. [2020-10-27 17:42:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:42:46,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 767 [2020-10-27 17:42:46,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:47,094 INFO L225 Difference]: With dead ends: 64924 [2020-10-27 17:42:47,095 INFO L226 Difference]: Without dead ends: 37781 [2020-10-27 17:42:47,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:42:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37781 states. [2020-10-27 17:42:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37781 to 37621. [2020-10-27 17:42:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37621 states. [2020-10-27 17:42:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37621 states to 37621 states and 55954 transitions. [2020-10-27 17:42:48,506 INFO L78 Accepts]: Start accepts. Automaton has 37621 states and 55954 transitions. Word has length 767 [2020-10-27 17:42:48,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:48,508 INFO L481 AbstractCegarLoop]: Abstraction has 37621 states and 55954 transitions. [2020-10-27 17:42:48,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:42:48,508 INFO L276 IsEmpty]: Start isEmpty. Operand 37621 states and 55954 transitions. [2020-10-27 17:42:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-27 17:42:48,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:48,682 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:42:48,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:42:48,683 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:48,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1042053090, now seen corresponding path program 1 times [2020-10-27 17:42:48,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:48,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590164336] [2020-10-27 17:42:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:53,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:53,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-27 17:42:53,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:42:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 17:42:53,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:42:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:42:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 17:42:53,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:53,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:54,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:54,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:42:54,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:54,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:54,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:42:54,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 17:42:54,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:42:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:42:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:54,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:54,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:54,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 17:42:54,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 17:42:54,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:42:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:42:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 17:42:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-27 17:42:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:54,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:54,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:54,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-27 17:42:54,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:54,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-27 17:42:54,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-27 17:42:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:54,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:54,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:42:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:54,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:55,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:55,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-27 17:42:55,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 17:42:55,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:55,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:55,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:55,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:42:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:55,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:55,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:55,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 17:42:55,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 17:42:55,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 247 proven. 118 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 17:42:56,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590164336] [2020-10-27 17:42:56,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:56,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:42:56,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381639533] [2020-10-27 17:42:56,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:42:56,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:56,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:42:56,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:42:56,069 INFO L87 Difference]: Start difference. First operand 37621 states and 55954 transitions. Second operand 7 states. [2020-10-27 17:43:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:22,686 INFO L93 Difference]: Finished difference Result 78010 states and 118689 transitions. [2020-10-27 17:43:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:43:22,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 835 [2020-10-27 17:43:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:22,915 INFO L225 Difference]: With dead ends: 78010 [2020-10-27 17:43:22,915 INFO L226 Difference]: Without dead ends: 41162 [2020-10-27 17:43:22,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:43:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41162 states. [2020-10-27 17:43:24,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41162 to 39460. [2020-10-27 17:43:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39460 states. [2020-10-27 17:43:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39460 states to 39460 states and 53569 transitions. [2020-10-27 17:43:24,297 INFO L78 Accepts]: Start accepts. Automaton has 39460 states and 53569 transitions. Word has length 835 [2020-10-27 17:43:24,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:24,298 INFO L481 AbstractCegarLoop]: Abstraction has 39460 states and 53569 transitions. [2020-10-27 17:43:24,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:43:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 39460 states and 53569 transitions. [2020-10-27 17:43:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2020-10-27 17:43:24,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:24,426 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:43:24,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:43:24,426 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:24,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:24,427 INFO L82 PathProgramCache]: Analyzing trace with hash 224214293, now seen corresponding path program 1 times [2020-10-27 17:43:24,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:24,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839913128] [2020-10-27 17:43:24,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:25,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:27,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:29,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:29,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 952 [2020-10-27 17:43:29,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 17:43:29,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 17:43:29,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-27 17:43:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 17:43:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:29,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:29,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:29,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:29,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:43:29,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:29,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:29,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:29,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:43:29,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 17:43:29,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:29,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:43:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:29,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:29,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:29,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:43:29,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 17:43:29,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 17:43:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:30,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 17:43:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:30,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:30,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 17:43:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 17:43:30,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:43:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-27 17:43:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-27 17:43:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:30,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:30,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:30,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-27 17:43:30,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-27 17:43:30,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-27 17:43:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:31,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:43:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:31,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:31,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-27 17:43:31,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 17:43:31,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:31,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:31,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:43:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:31,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:31,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:31,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 17:43:31,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:31,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:43:31,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:31,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:31,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:31,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:31,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 396 proven. 127 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-27 17:43:32,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839913128] [2020-10-27 17:43:32,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:32,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:43:32,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294334131] [2020-10-27 17:43:32,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:43:32,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:32,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:43:32,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:43:32,253 INFO L87 Difference]: Start difference. First operand 39460 states and 53569 transitions. Second operand 7 states. [2020-10-27 17:44:01,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:01,104 INFO L93 Difference]: Finished difference Result 84580 states and 127631 transitions. [2020-10-27 17:44:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:44:01,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 930 [2020-10-27 17:44:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:01,474 INFO L225 Difference]: With dead ends: 84580 [2020-10-27 17:44:01,474 INFO L226 Difference]: Without dead ends: 48170 [2020-10-27 17:44:01,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:44:01,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48170 states.