/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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:12:20,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:12:20,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:12:20,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:12:20,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:12:20,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:12:20,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:12:20,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:12:20,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:12:20,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:12:20,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:12:20,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:12:20,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:12:20,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:12:20,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:12:20,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:12:20,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:12:20,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:12:20,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:12:20,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:12:20,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:12:20,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:12:20,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:12:20,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:12:20,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:12:20,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:12:20,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:12:20,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:12:20,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:12:20,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:12:20,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:12:20,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:12:20,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:12:20,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:12:20,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:12:20,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:12:20,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:12:20,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:12:20,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:12:20,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:12:20,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:12:20,952 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 07:12:21,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:12:21,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:12:21,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:12:21,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:12:21,006 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:12:21,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:12:21,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:12:21,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:12:21,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:12:21,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:12:21,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:12:21,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:12:21,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:12:21,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:12:21,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:12:21,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:12:21,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:12:21,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:12:21,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:12:21,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:12:21,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:12:21,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:12:21,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:12:21,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:12:21,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:12:21,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:12:21,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:12:21,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:12:21,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:12:21,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:12:21,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:12:21,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:12:21,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:12:21,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:12:21,520 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:12:21,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2020-10-29 07:12:21,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5908c34b/abbe5a5f697a4e68bb10f2742859b173/FLAG589a51927 [2020-10-29 07:12:22,706 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:12:22,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2020-10-29 07:12:22,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5908c34b/abbe5a5f697a4e68bb10f2742859b173/FLAG589a51927 [2020-10-29 07:12:23,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5908c34b/abbe5a5f697a4e68bb10f2742859b173 [2020-10-29 07:12:23,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:12:23,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:12:23,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:12:23,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:12:23,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:12:23,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:12:23" (1/1) ... [2020-10-29 07:12:23,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df94d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:23, skipping insertion in model container [2020-10-29 07:12:23,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:12:23" (1/1) ... [2020-10-29 07:12:23,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:12:23,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:12:24,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:12:24,976 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:12:25,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:12:25,707 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:12:25,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25 WrapperNode [2020-10-29 07:12:25,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:12:25,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:12:25,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:12:25,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:12:25,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:26,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:26,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:26,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:26,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:12:26,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:12:26,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:12:26,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:12:26,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (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 07:12:26,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:12:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:12:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:12:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:12:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:12:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:12:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:12:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:12:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:12:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:12:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:12:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:12:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:12:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:12:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:12:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:12:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:12:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:12:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:12:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:12:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:12:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:12:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:12:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:12:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:12:37,092 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:12:37,093 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:12:37,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:12:37 BoogieIcfgContainer [2020-10-29 07:12:37,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:12:37,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:12:37,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:12:37,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:12:37,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:12:23" (1/3) ... [2020-10-29 07:12:37,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7330b923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:12:37, skipping insertion in model container [2020-10-29 07:12:37,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (2/3) ... [2020-10-29 07:12:37,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7330b923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:12:37, skipping insertion in model container [2020-10-29 07:12:37,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:12:37" (3/3) ... [2020-10-29 07:12:37,108 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label13.c [2020-10-29 07:12:37,122 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:12:37,130 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:12:37,145 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:12:37,183 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:12:37,183 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:12:37,183 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:12:37,183 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:12:37,183 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:12:37,184 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:12:37,184 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:12:37,184 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:12:37,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:12:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 07:12:37,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:37,242 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] [2020-10-29 07:12:37,243 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:37,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:37,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1456204510, now seen corresponding path program 1 times [2020-10-29 07:12:37,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:37,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038055284] [2020-10-29 07:12:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:38,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:12:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-29 07:12:38,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:38,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:12:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:12:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:12:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:12:38,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:12:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:38,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:12:38,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:12:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:38,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:12:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:12:38,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:12:38,368 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 07:12:38,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038055284] [2020-10-29 07:12:38,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:12:38,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:12:38,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032442026] [2020-10-29 07:12:38,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:12:38,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:12:38,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:12:38,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:12:38,398 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:12:38,573 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:12:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:12:59,138 INFO L93 Difference]: Finished difference Result 3209 states and 5919 transitions. [2020-10-29 07:12:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:12:59,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-29 07:12:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:12:59,185 INFO L225 Difference]: With dead ends: 3209 [2020-10-29 07:12:59,186 INFO L226 Difference]: Without dead ends: 2007 [2020-10-29 07:12:59,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:12:59,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-29 07:12:59,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1921. [2020-10-29 07:12:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2020-10-29 07:12:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3312 transitions. [2020-10-29 07:12:59,408 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3312 transitions. Word has length 64 [2020-10-29 07:12:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:12:59,409 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 3312 transitions. [2020-10-29 07:12:59,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:12:59,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3312 transitions. [2020-10-29 07:12:59,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 07:12:59,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:59,427 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, 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 07:12:59,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:12:59,427 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:59,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:59,429 INFO L82 PathProgramCache]: Analyzing trace with hash -416647770, now seen corresponding path program 1 times [2020-10-29 07:12:59,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:59,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779008314] [2020-10-29 07:12:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:01,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:01,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 07:13:01,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:13:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2221 [2020-10-29 07:13:01,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:01,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:13:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:13:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 07:13:01,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:13:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:01,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:01,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:01,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:13:01,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:01,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:13:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:13:01,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:01,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:02,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:02,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:13:02,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:02,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:13:02,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:02,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:13:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:02,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779008314] [2020-10-29 07:13:02,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:13:02,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:13:02,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078461652] [2020-10-29 07:13:02,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:13:02,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:02,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:13:02,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:13:02,133 INFO L87 Difference]: Start difference. First operand 1921 states and 3312 transitions. Second operand 5 states. [2020-10-29 07:13:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:13:19,887 INFO L93 Difference]: Finished difference Result 5545 states and 9680 transitions. [2020-10-29 07:13:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:13:19,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-29 07:13:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:13:19,915 INFO L225 Difference]: With dead ends: 5545 [2020-10-29 07:13:19,915 INFO L226 Difference]: Without dead ends: 3630 [2020-10-29 07:13:19,922 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 07:13:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2020-10-29 07:13:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 3604. [2020-10-29 07:13:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3604 states. [2020-10-29 07:13:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 5380 transitions. [2020-10-29 07:13:20,051 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 5380 transitions. Word has length 133 [2020-10-29 07:13:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:13:20,052 INFO L481 AbstractCegarLoop]: Abstraction has 3604 states and 5380 transitions. [2020-10-29 07:13:20,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:13:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 5380 transitions. [2020-10-29 07:13:20,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 07:13:20,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:20,055 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, 1, 1, 1, 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 07:13:20,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:13:20,055 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:20,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:20,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1493568226, now seen corresponding path program 1 times [2020-10-29 07:13:20,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:20,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378929168] [2020-10-29 07:13:20,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:21,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:21,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:13:21,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:13:21,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-29 07:13:21,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:21,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:13:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 07:13:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 07:13:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:21,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:21,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:21,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:21,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:21,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:13:21,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:21,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:13:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:13:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:21,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:21,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:21,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:13:21,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:13:21,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:21,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:13:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:21,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378929168] [2020-10-29 07:13:21,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:13:21,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:13:21,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11831299] [2020-10-29 07:13:21,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:13:21,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:21,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:13:21,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:13:21,350 INFO L87 Difference]: Start difference. First operand 3604 states and 5380 transitions. Second operand 5 states. [2020-10-29 07:13:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:13:40,756 INFO L93 Difference]: Finished difference Result 10614 states and 16076 transitions. [2020-10-29 07:13:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:13:40,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-29 07:13:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:13:40,804 INFO L225 Difference]: With dead ends: 10614 [2020-10-29 07:13:40,804 INFO L226 Difference]: Without dead ends: 7016 [2020-10-29 07:13:40,817 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 07:13:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2020-10-29 07:13:41,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 6997. [2020-10-29 07:13:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6997 states. [2020-10-29 07:13:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6997 states to 6997 states and 9796 transitions. [2020-10-29 07:13:41,057 INFO L78 Accepts]: Start accepts. Automaton has 6997 states and 9796 transitions. Word has length 137 [2020-10-29 07:13:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:13:41,058 INFO L481 AbstractCegarLoop]: Abstraction has 6997 states and 9796 transitions. [2020-10-29 07:13:41,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:13:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6997 states and 9796 transitions. [2020-10-29 07:13:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 07:13:41,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:41,062 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, 1, 1, 1, 1, 1, 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 07:13:41,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:13:41,063 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:41,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1674096646, now seen corresponding path program 1 times [2020-10-29 07:13:41,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:41,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001659739] [2020-10-29 07:13:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:41,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:42,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:42,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 07:13:42,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:13:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-10-29 07:13:42,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:42,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:42,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:13:42,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:13:42,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 07:13:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:43,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:43,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:43,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:43,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:13:43,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:43,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:13:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:13:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:43,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:43,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:43,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:13:43,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 07:13:43,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:43,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:13:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:13:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:43,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001659739] [2020-10-29 07:13:43,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:13:43,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:13:43,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690821548] [2020-10-29 07:13:43,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:13:43,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:43,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:13:43,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:13:43,317 INFO L87 Difference]: Start difference. First operand 6997 states and 9796 transitions. Second operand 5 states. [2020-10-29 07:14:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:04,076 INFO L93 Difference]: Finished difference Result 17306 states and 25254 transitions. [2020-10-29 07:14:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:14:04,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-29 07:14:04,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:04,126 INFO L225 Difference]: With dead ends: 17306 [2020-10-29 07:14:04,126 INFO L226 Difference]: Without dead ends: 10315 [2020-10-29 07:14:04,146 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 07:14:04,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10315 states. [2020-10-29 07:14:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10315 to 10274. [2020-10-29 07:14:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10274 states. [2020-10-29 07:14:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10274 states to 10274 states and 13905 transitions. [2020-10-29 07:14:04,492 INFO L78 Accepts]: Start accepts. Automaton has 10274 states and 13905 transitions. Word has length 139 [2020-10-29 07:14:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:04,494 INFO L481 AbstractCegarLoop]: Abstraction has 10274 states and 13905 transitions. [2020-10-29 07:14:04,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:14:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 10274 states and 13905 transitions. [2020-10-29 07:14:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 07:14:04,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:04,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:14:04,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:14:04,498 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:04,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1526363974, now seen corresponding path program 1 times [2020-10-29 07:14:04,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:04,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652042085] [2020-10-29 07:14:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:04,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:05,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:05,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:14:05,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:14:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-29 07:14:05,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:05,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:14:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:14:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:05,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:05,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:05,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:05,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:14:05,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:05,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:05,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:05,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:05,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:14:05,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 07:14:05,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:05,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:14:05,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:14:06,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652042085] [2020-10-29 07:14:06,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:14:06,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:14:06,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110020751] [2020-10-29 07:14:06,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:06,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:06,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:06,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:06,136 INFO L87 Difference]: Start difference. First operand 10274 states and 13905 transitions. Second operand 7 states. [2020-10-29 07:14:36,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:36,656 INFO L93 Difference]: Finished difference Result 25968 states and 36352 transitions. [2020-10-29 07:14:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:14:36,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-29 07:14:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:36,737 INFO L225 Difference]: With dead ends: 25968 [2020-10-29 07:14:36,737 INFO L226 Difference]: Without dead ends: 15700 [2020-10-29 07:14:36,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:14:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15700 states. [2020-10-29 07:14:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15700 to 15543. [2020-10-29 07:14:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15543 states. [2020-10-29 07:14:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15543 states to 15543 states and 20785 transitions. [2020-10-29 07:14:37,172 INFO L78 Accepts]: Start accepts. Automaton has 15543 states and 20785 transitions. Word has length 171 [2020-10-29 07:14:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:37,173 INFO L481 AbstractCegarLoop]: Abstraction has 15543 states and 20785 transitions. [2020-10-29 07:14:37,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:14:37,173 INFO L276 IsEmpty]: Start isEmpty. Operand 15543 states and 20785 transitions. [2020-10-29 07:14:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 07:14:37,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:37,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:37,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:14:37,180 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:37,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:37,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1957889760, now seen corresponding path program 1 times [2020-10-29 07:14:37,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:37,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727894547] [2020-10-29 07:14:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:37,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:38,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:38,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-29 07:14:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:14:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-29 07:14:38,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:38,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:14:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:14:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:38,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:38,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:38,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:38,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:38,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:14:38,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:38,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:38,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:14:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 07:14:38,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:38,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:14:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:14:38,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727894547] [2020-10-29 07:14:38,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:14:38,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:14:38,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420113475] [2020-10-29 07:14:38,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:38,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:38,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:38,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:38,869 INFO L87 Difference]: Start difference. First operand 15543 states and 20785 transitions. Second operand 7 states. [2020-10-29 07:15:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:05,000 INFO L93 Difference]: Finished difference Result 35611 states and 50189 transitions. [2020-10-29 07:15:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:15:05,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-29 07:15:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:05,081 INFO L225 Difference]: With dead ends: 35611 [2020-10-29 07:15:05,082 INFO L226 Difference]: Without dead ends: 20074 [2020-10-29 07:15:05,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:15:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20074 states. [2020-10-29 07:15:05,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20074 to 19962. [2020-10-29 07:15:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19962 states. [2020-10-29 07:15:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19962 states to 19962 states and 25858 transitions. [2020-10-29 07:15:05,589 INFO L78 Accepts]: Start accepts. Automaton has 19962 states and 25858 transitions. Word has length 176 [2020-10-29 07:15:05,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:05,590 INFO L481 AbstractCegarLoop]: Abstraction has 19962 states and 25858 transitions. [2020-10-29 07:15:05,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:15:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 19962 states and 25858 transitions. [2020-10-29 07:15:05,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 07:15:05,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:05,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:05,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:15:05,596 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:05,596 INFO L82 PathProgramCache]: Analyzing trace with hash -301851978, now seen corresponding path program 1 times [2020-10-29 07:15:05,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:05,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586227622] [2020-10-29 07:15:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:05,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:07,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:07,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 07:15:07,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:15:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1410 [2020-10-29 07:15:07,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:07,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:15:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:15:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-29 07:15:07,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:07,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:07,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:07,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:15:07,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:07,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:15:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:07,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:15:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:07,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:07,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 07:15:07,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:15:07,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-29 07:15:07,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:07,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:15:07,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:15:07,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586227622] [2020-10-29 07:15:07,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:15:07,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:15:07,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377533923] [2020-10-29 07:15:07,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:15:07,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:07,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:15:07,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:15:07,825 INFO L87 Difference]: Start difference. First operand 19962 states and 25858 transitions. Second operand 7 states. [2020-10-29 07:15:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:50,751 INFO L93 Difference]: Finished difference Result 51653 states and 72949 transitions. [2020-10-29 07:15:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:15:50,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-10-29 07:15:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:50,890 INFO L225 Difference]: With dead ends: 51653 [2020-10-29 07:15:50,890 INFO L226 Difference]: Without dead ends: 31697 [2020-10-29 07:15:50,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:15:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31697 states. [2020-10-29 07:15:51,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31697 to 31607. [2020-10-29 07:15:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31607 states. [2020-10-29 07:15:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31607 states to 31607 states and 41389 transitions. [2020-10-29 07:15:51,803 INFO L78 Accepts]: Start accepts. Automaton has 31607 states and 41389 transitions. Word has length 190 [2020-10-29 07:15:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:51,804 INFO L481 AbstractCegarLoop]: Abstraction has 31607 states and 41389 transitions. [2020-10-29 07:15:51,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:15:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 31607 states and 41389 transitions. [2020-10-29 07:15:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-29 07:15:51,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:51,814 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:15:51,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:15:51,814 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:51,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:51,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1286895695, now seen corresponding path program 1 times [2020-10-29 07:15:51,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:51,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525221009] [2020-10-29 07:15:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:55,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-29 07:15:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:15:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3676 [2020-10-29 07:15:55,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:55,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:15:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:15:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-29 07:15:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:55,749 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:15:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:55,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:55,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:55,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:15:55,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:55,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:15:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:15:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:55,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:56,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:56,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:15:56,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:15:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 07:15:56,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:56,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:15:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:15:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:56,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:56,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:15:56,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 07:15:56,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:56,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:15:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:15:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:15:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:15:56,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525221009] [2020-10-29 07:15:56,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:15:56,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:15:56,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56019731] [2020-10-29 07:15:56,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:15:56,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:56,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:15:56,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:15:56,673 INFO L87 Difference]: Start difference. First operand 31607 states and 41389 transitions. Second operand 7 states. [2020-10-29 07:15:56,829 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:15:59,985 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 66