/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:20:15,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:20:15,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:20:15,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:20:15,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:20:15,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:20:15,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:20:15,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:20:15,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:20:15,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:20:15,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:20:15,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:20:15,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:20:15,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:20:15,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:20:15,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:20:15,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:20:15,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:20:15,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:20:15,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:20:15,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:20:15,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:20:15,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:20:15,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:20:15,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:20:15,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:20:15,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:20:15,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:20:15,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:20:15,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:20:15,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:20:15,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:20:15,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:20:15,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:20:15,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:20:15,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:20:15,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:20:15,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:20:15,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:20:15,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:20:15,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:20:15,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:20:15,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:20:15,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:20:15,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:20:15,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:20:15,908 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:20:15,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:20:15,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:20:15,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:20:15,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:20:15,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:20:15,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:20:15,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:20:15,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:20:15,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:20:15,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:20:15,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:20:15,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:20:15,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:20:15,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:20:15,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:20:15,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:20:15,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:20:15,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:20:15,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:20:15,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:20:15,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:20:15,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:20:15,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:20:15,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:20:15,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:20:16,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:20:16,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:20:16,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:20:16,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:20:16,346 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:20:16,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41.c [2020-10-29 07:20:16,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dd5fe0e5/1cab2d7c875f40678f8bfbc8307dbb49/FLAG4316b9ae1 [2020-10-29 07:20:17,412 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:20:17,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label41.c [2020-10-29 07:20:17,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dd5fe0e5/1cab2d7c875f40678f8bfbc8307dbb49/FLAG4316b9ae1 [2020-10-29 07:20:17,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dd5fe0e5/1cab2d7c875f40678f8bfbc8307dbb49 [2020-10-29 07:20:17,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:20:17,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:20:17,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:20:17,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:20:17,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:20:17,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:20:17" (1/1) ... [2020-10-29 07:20:17,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b546f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:17, skipping insertion in model container [2020-10-29 07:20:17,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:20:17" (1/1) ... [2020-10-29 07:20:17,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:20:18,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:20:19,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:20:20,003 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:20:20,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:20:20,840 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:20:20,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20 WrapperNode [2020-10-29 07:20:20,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:20:20,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:20:20,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:20:20,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:20:20,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20" (1/1) ... [2020-10-29 07:20:20,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20" (1/1) ... [2020-10-29 07:20:20,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20" (1/1) ... [2020-10-29 07:20:20,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20" (1/1) ... [2020-10-29 07:20:21,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20" (1/1) ... [2020-10-29 07:20:21,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20" (1/1) ... [2020-10-29 07:20:21,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20" (1/1) ... [2020-10-29 07:20:21,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:20:21,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:20:21,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:20:21,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:20:21,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:20:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:20:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:20:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:20:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:20:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:20:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:20:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:20:21,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:20:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:20:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:20:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:20:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:20:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:20:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:20:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:20:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:20:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:20:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:20:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:20:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:20:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:20:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:20:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:20:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:20:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:20:31,487 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:20:31,488 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:20:31,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:20:31 BoogieIcfgContainer [2020-10-29 07:20:31,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:20:31,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:20:31,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:20:31,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:20:31,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:20:17" (1/3) ... [2020-10-29 07:20:31,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2901de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:20:31, skipping insertion in model container [2020-10-29 07:20:31,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:20" (2/3) ... [2020-10-29 07:20:31,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2901de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:20:31, skipping insertion in model container [2020-10-29 07:20:31,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:20:31" (3/3) ... [2020-10-29 07:20:31,506 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label41.c [2020-10-29 07:20:31,519 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:20:31,525 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:20:31,538 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:20:31,574 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:20:31,574 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:20:31,574 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:20:31,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:20:31,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:20:31,574 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:20:31,574 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:20:31,575 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:20:31,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:20:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 07:20:31,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:20:31,625 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] [2020-10-29 07:20:31,625 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:20:31,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:20:31,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1233469150, now seen corresponding path program 1 times [2020-10-29 07:20:31,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:20:31,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415583905] [2020-10-29 07:20:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:20:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:32,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:32,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 07:20:32,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:20:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-29 07:20:32,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:32,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:20:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:20:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 07:20:32,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:20:32,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:20:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:32,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:32,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:20:32,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:20:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:20:32,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:32,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:20:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:20:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:20:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:20:32,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415583905] [2020-10-29 07:20:32,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:20:32,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:20:32,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029558825] [2020-10-29 07:20:32,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:20:32,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:20:32,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:20:32,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:20:32,738 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-29 07:20:55,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:20:55,072 INFO L93 Difference]: Finished difference Result 4085 states and 7568 transitions. [2020-10-29 07:20:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:20:55,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-29 07:20:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:20:55,123 INFO L225 Difference]: With dead ends: 4085 [2020-10-29 07:20:55,124 INFO L226 Difference]: Without dead ends: 2873 [2020-10-29 07:20:55,142 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 [2020-10-29 07:20:55,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-10-29 07:20:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1935. [2020-10-29 07:20:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-29 07:20:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3164 transitions. [2020-10-29 07:20:55,372 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3164 transitions. Word has length 51 [2020-10-29 07:20:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:20:55,374 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states and 3164 transitions. [2020-10-29 07:20:55,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:20:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3164 transitions. [2020-10-29 07:20:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 07:20:55,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:20:55,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:20:55,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:20:55,390 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:20:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:20:55,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1531828183, now seen corresponding path program 1 times [2020-10-29 07:20:55,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:20:55,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644757714] [2020-10-29 07:20:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:20:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:58,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 07:20:58,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:20:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2760 [2020-10-29 07:20:58,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:58,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:20:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:20:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:20:58,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:20:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:20:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:58,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:58,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:20:58,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:20:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:20:58,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:58,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:20:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:20:58,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:20:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:20:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:58,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:58,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:20:58,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:20:58,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:20:58,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:58,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:20:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:20:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:20:58,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:20:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:20:58,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644757714] [2020-10-29 07:20:58,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:20:58,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:20:58,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660930598] [2020-10-29 07:20:58,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:20:58,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:20:58,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:20:58,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:20:58,753 INFO L87 Difference]: Start difference. First operand 1935 states and 3164 transitions. Second operand 7 states. [2020-10-29 07:21:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:21:28,625 INFO L93 Difference]: Finished difference Result 5670 states and 9395 transitions. [2020-10-29 07:21:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:21:28,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-29 07:21:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:21:28,662 INFO L225 Difference]: With dead ends: 5670 [2020-10-29 07:21:28,662 INFO L226 Difference]: Without dead ends: 3741 [2020-10-29 07:21:28,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:21:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2020-10-29 07:21:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 3646. [2020-10-29 07:21:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3646 states. [2020-10-29 07:21:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 5458 transitions. [2020-10-29 07:21:28,824 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 5458 transitions. Word has length 126 [2020-10-29 07:21:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:21:28,827 INFO L481 AbstractCegarLoop]: Abstraction has 3646 states and 5458 transitions. [2020-10-29 07:21:28,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:21:28,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 5458 transitions. [2020-10-29 07:21:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 07:21:28,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:21:28,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:21:28,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:21:28,838 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:21:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:21:28,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1579632475, now seen corresponding path program 1 times [2020-10-29 07:21:28,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:21:28,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692074508] [2020-10-29 07:21:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:21:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:28,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:29,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:30,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:30,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 07:21:30,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:21:30,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-29 07:21:30,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:30,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:21:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:21:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:21:30,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:21:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:21:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:30,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:30,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:21:30,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:21:30,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:30,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:21:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:21:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:21:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:21:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:30,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:30,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:21:30,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 07:21:30,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:30,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:21:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:21:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:21:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:21:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:21:30,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692074508] [2020-10-29 07:21:30,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:21:30,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:21:30,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523117654] [2020-10-29 07:21:30,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:21:30,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:21:30,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:21:30,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:21:30,586 INFO L87 Difference]: Start difference. First operand 3646 states and 5458 transitions. Second operand 7 states. [2020-10-29 07:21:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:21:52,107 INFO L93 Difference]: Finished difference Result 10994 states and 16919 transitions. [2020-10-29 07:21:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:21:52,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-29 07:21:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:21:52,155 INFO L225 Difference]: With dead ends: 10994 [2020-10-29 07:21:52,155 INFO L226 Difference]: Without dead ends: 7354 [2020-10-29 07:21:52,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:21:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2020-10-29 07:21:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7142. [2020-10-29 07:21:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7142 states. [2020-10-29 07:21:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 9667 transitions. [2020-10-29 07:21:52,408 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 9667 transitions. Word has length 140 [2020-10-29 07:21:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:21:52,411 INFO L481 AbstractCegarLoop]: Abstraction has 7142 states and 9667 transitions. [2020-10-29 07:21:52,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:21:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 9667 transitions. [2020-10-29 07:21:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 07:21:52,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:21:52,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:21:52,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:21:52,415 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:21:52,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:21:52,416 INFO L82 PathProgramCache]: Analyzing trace with hash 952778607, now seen corresponding path program 1 times [2020-10-29 07:21:52,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:21:52,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237560359] [2020-10-29 07:21:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:21:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:53,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:53,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 07:21:53,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:21:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-29 07:21:53,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:53,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:21:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:21:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:21:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:21:54,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:21:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:54,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:54,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:21:54,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:54,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:21:54,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:54,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:54,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:21:54,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:54,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:21:54,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:21:54,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:21:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:54,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:54,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:21:54,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 07:21:54,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:54,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:21:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:21:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:21:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:21:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:21:54,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237560359] [2020-10-29 07:21:54,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:21:54,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:21:54,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555514509] [2020-10-29 07:21:54,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:21:54,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:21:54,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:21:54,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:21:54,518 INFO L87 Difference]: Start difference. First operand 7142 states and 9667 transitions. Second operand 7 states. [2020-10-29 07:22:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:22:17,288 INFO L93 Difference]: Finished difference Result 21454 states and 30522 transitions. [2020-10-29 07:22:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:22:17,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-29 07:22:17,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:22:17,374 INFO L225 Difference]: With dead ends: 21454 [2020-10-29 07:22:17,374 INFO L226 Difference]: Without dead ends: 14318 [2020-10-29 07:22:17,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:22:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14318 states. [2020-10-29 07:22:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14318 to 14165. [2020-10-29 07:22:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14165 states. [2020-10-29 07:22:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14165 states to 14165 states and 18278 transitions. [2020-10-29 07:22:17,852 INFO L78 Accepts]: Start accepts. Automaton has 14165 states and 18278 transitions. Word has length 169 [2020-10-29 07:22:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:22:17,854 INFO L481 AbstractCegarLoop]: Abstraction has 14165 states and 18278 transitions. [2020-10-29 07:22:17,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:22:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 14165 states and 18278 transitions. [2020-10-29 07:22:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 07:22:17,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:17,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:22:17,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:22:17,952 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:17,954 INFO L82 PathProgramCache]: Analyzing trace with hash -619485380, now seen corresponding path program 1 times [2020-10-29 07:22:17,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:17,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427866294] [2020-10-29 07:22:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:18,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:18,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 07:22:18,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:18,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-29 07:22:18,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:18,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 07:22:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 07:22:18,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:18,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:18,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:18,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:18,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:22:18,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:18,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:22:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:22:18,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:18,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:22:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:18,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:18,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:22:18,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 07:22:18,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:18,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:22:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:18,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427866294] [2020-10-29 07:22:18,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:22:18,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:22:18,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734412109] [2020-10-29 07:22:18,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:22:18,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:18,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:22:18,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:22:18,797 INFO L87 Difference]: Start difference. First operand 14165 states and 18278 transitions. Second operand 5 states. [2020-10-29 07:22:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:22:38,848 INFO L93 Difference]: Finished difference Result 35132 states and 45046 transitions. [2020-10-29 07:22:38,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:22:38,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-29 07:22:38,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:22:38,926 INFO L225 Difference]: With dead ends: 35132 [2020-10-29 07:22:38,927 INFO L226 Difference]: Without dead ends: 20973 [2020-10-29 07:22:38,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:22:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20973 states. [2020-10-29 07:22:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20973 to 18491. [2020-10-29 07:22:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18491 states. [2020-10-29 07:22:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18491 states to 18491 states and 23361 transitions. [2020-10-29 07:22:39,515 INFO L78 Accepts]: Start accepts. Automaton has 18491 states and 23361 transitions. Word has length 180 [2020-10-29 07:22:39,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:22:39,515 INFO L481 AbstractCegarLoop]: Abstraction has 18491 states and 23361 transitions. [2020-10-29 07:22:39,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:22:39,516 INFO L276 IsEmpty]: Start isEmpty. Operand 18491 states and 23361 transitions. [2020-10-29 07:22:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 07:22:39,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:39,522 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:22:39,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:22:39,523 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:39,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:39,523 INFO L82 PathProgramCache]: Analyzing trace with hash 959312730, now seen corresponding path program 1 times [2020-10-29 07:22:39,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:39,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504903188] [2020-10-29 07:22:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:39,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:43,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:43,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:22:43,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:22:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4131 [2020-10-29 07:22:43,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:43,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:22:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:22:43,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:43,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:43,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:43,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:43,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:43,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:22:43,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:43,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:22:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:22:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:43,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:22:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:44,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:44,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:22:44,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:22:44,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:44,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:44,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:22:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:44,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:22:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:44,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:44,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:22:44,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 07:22:44,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:44,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:22:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:22:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:22:44,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504903188] [2020-10-29 07:22:44,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:22:44,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:22:44,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877430477] [2020-10-29 07:22:44,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:22:44,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:44,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:22:44,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:22:44,407 INFO L87 Difference]: Start difference. First operand 18491 states and 23361 transitions. Second operand 7 states. [2020-10-29 07:23:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:17,967 INFO L93 Difference]: Finished difference Result 47455 states and 69425 transitions. [2020-10-29 07:23:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:23:17,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-29 07:23:17,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:18,098 INFO L225 Difference]: With dead ends: 47455 [2020-10-29 07:23:18,098 INFO L226 Difference]: Without dead ends: 28109 [2020-10-29 07:23:18,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:23:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28109 states. [2020-10-29 07:23:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28109 to 26675. [2020-10-29 07:23:18,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26675 states. [2020-10-29 07:23:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26675 states to 26675 states and 33788 transitions. [2020-10-29 07:23:18,949 INFO L78 Accepts]: Start accepts. Automaton has 26675 states and 33788 transitions. Word has length 249 [2020-10-29 07:23:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:18,950 INFO L481 AbstractCegarLoop]: Abstraction has 26675 states and 33788 transitions. [2020-10-29 07:23:18,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:23:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 26675 states and 33788 transitions. [2020-10-29 07:23:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 07:23:18,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:18,957 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:23:18,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:23:18,958 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1997510590, now seen corresponding path program 1 times [2020-10-29 07:23:18,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:18,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938816175] [2020-10-29 07:23:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:19,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:19,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:19,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:24,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:24,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 07:23:24,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:23:24,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 07:23:24,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:24,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:24,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:24,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:23:24,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:23:24,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:24,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:24,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:24,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:24,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:23:24,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:24,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:23:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:23:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:24,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:24,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:24,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:23:24,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 07:23:24,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:24,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:23:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:23:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:24,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:24,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:23:24,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:24,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 07:23:24,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:24,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:23:24,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:23:24,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938816175] [2020-10-29 07:23:24,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:24,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:23:24,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15817068] [2020-10-29 07:23:24,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:23:24,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:24,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:23:24,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:23:24,787 INFO L87 Difference]: Start difference. First operand 26675 states and 33788 transitions. Second operand 7 states. [2020-10-29 07:23:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:54,059 INFO L93 Difference]: Finished difference Result 78136 states and 105827 transitions. [2020-10-29 07:23:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:23:54,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-29 07:23:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:54,274 INFO L225 Difference]: With dead ends: 78136 [2020-10-29 07:23:54,274 INFO L226 Difference]: Without dead ends: 51467 [2020-10-29 07:23:54,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:23:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51467 states. [2020-10-29 07:23:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51467 to 50143. [2020-10-29 07:23:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50143 states. [2020-10-29 07:23:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50143 states to 50143 states and 66390 transitions. [2020-10-29 07:23:56,077 INFO L78 Accepts]: Start accepts. Automaton has 50143 states and 66390 transitions. Word has length 251 [2020-10-29 07:23:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:56,077 INFO L481 AbstractCegarLoop]: Abstraction has 50143 states and 66390 transitions. [2020-10-29 07:23:56,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:23:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 50143 states and 66390 transitions. [2020-10-29 07:23:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 07:23:56,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:56,085 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:23:56,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:23:56,085 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:56,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:56,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1461763041, now seen corresponding path program 1 times [2020-10-29 07:23:56,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:56,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645936335] [2020-10-29 07:23:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:56,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:57,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:57,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-29 07:23:57,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:23:57,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-29 07:23:57,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:57,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:57,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:23:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:23:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:57,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:57,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:57,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:23:57,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:57,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:23:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:23:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:57,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:57,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:57,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:23:57,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:57,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 07:23:57,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:57,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:23:57,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:57,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:23:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:57,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:57,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:23:57,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:57,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 07:23:57,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:57,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:23:57,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:23:58,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645936335] [2020-10-29 07:23:58,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:58,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:23:58,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616028209] [2020-10-29 07:23:58,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:23:58,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:58,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:23:58,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:23:58,038 INFO L87 Difference]: Start difference. First operand 50143 states and 66390 transitions. Second operand 7 states.