/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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:22:16,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:22:16,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:22:16,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:22:16,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:22:16,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:22:16,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:22:16,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:22:16,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:22:16,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:22:16,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:22:16,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:22:16,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:22:16,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:22:16,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:22:16,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:22:16,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:22:16,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:22:16,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:22:16,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:22:16,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:22:16,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:22:16,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:22:16,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:22:16,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:22:16,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:22:16,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:22:16,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:22:16,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:22:16,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:22:16,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:22:16,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:22:16,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:22:16,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:22:16,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:22:16,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:22:16,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:22:16,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:22:16,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:22:16,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:22:16,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:22:16,995 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 07:22:17,071 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:22:17,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:22:17,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:22:17,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:22:17,077 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:22:17,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:22:17,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:22:17,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:22:17,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:22:17,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:22:17,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:22:17,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:22:17,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:22:17,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:22:17,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:22:17,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:22:17,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:22:17,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:22:17,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:22:17,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:22:17,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:22:17,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:22:17,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:22:17,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:22:17,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:22:17,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:22:17,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:22:17,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:22:17,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:22:17,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:22:17,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:22:17,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:22:17,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:22:17,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:22:17,630 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:22:17,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50.c [2020-10-29 07:22:17,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a89790d/8e1424249f4a476f8d7d122074331385/FLAG31cf059c4 [2020-10-29 07:22:18,775 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:22:18,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label50.c [2020-10-29 07:22:18,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a89790d/8e1424249f4a476f8d7d122074331385/FLAG31cf059c4 [2020-10-29 07:22:19,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a89790d/8e1424249f4a476f8d7d122074331385 [2020-10-29 07:22:19,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:22:19,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:22:19,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:22:19,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:22:19,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:22:19,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:22:19" (1/1) ... [2020-10-29 07:22:19,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ebd6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:19, skipping insertion in model container [2020-10-29 07:22:19,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:22:19" (1/1) ... [2020-10-29 07:22:19,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:22:19,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:22:21,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:22:21,467 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:22:22,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:22:22,413 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:22:22,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22 WrapperNode [2020-10-29 07:22:22,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:22:22,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:22:22,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:22:22,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:22:22,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22" (1/1) ... [2020-10-29 07:22:22,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22" (1/1) ... [2020-10-29 07:22:22,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22" (1/1) ... [2020-10-29 07:22:22,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22" (1/1) ... [2020-10-29 07:22:22,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22" (1/1) ... [2020-10-29 07:22:22,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22" (1/1) ... [2020-10-29 07:22:22,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22" (1/1) ... [2020-10-29 07:22:22,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:22:22,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:22:22,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:22:22,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:22:22,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22" (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 07:22:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:22:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:22:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:22:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:22:23,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:22:23,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:22:23,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:22:23,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:22:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:22:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:22:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:22:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:22:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:22:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:22:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:22:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:22:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:22:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:22:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:22:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:22:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:22:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:22:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:22:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:22:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:22:33,980 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:22:33,980 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:22:33,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:22:33 BoogieIcfgContainer [2020-10-29 07:22:33,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:22:33,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:22:33,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:22:34,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:22:34,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:22:19" (1/3) ... [2020-10-29 07:22:34,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20db69ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:22:34, skipping insertion in model container [2020-10-29 07:22:34,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:22" (2/3) ... [2020-10-29 07:22:34,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20db69ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:22:34, skipping insertion in model container [2020-10-29 07:22:34,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:22:33" (3/3) ... [2020-10-29 07:22:34,009 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label50.c [2020-10-29 07:22:34,031 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:22:34,039 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:22:34,060 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:22:34,122 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:22:34,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:22:34,122 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:22:34,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:22:34,122 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:22:34,122 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:22:34,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:22:34,123 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:22:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:22:34,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 07:22:34,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:34,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:22:34,201 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:34,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1994991254, now seen corresponding path program 1 times [2020-10-29 07:22:34,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:34,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372503970] [2020-10-29 07:22:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:35,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:35,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:22:35,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:35,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-29 07:22:35,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:35,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:22:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:22:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:22:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:22:35,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:35,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:35,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:35,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:35,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:22:35,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:35,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:35,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:22:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:35,529 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 07:22:35,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372503970] [2020-10-29 07:22:35,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:22:35,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:22:35,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208620636] [2020-10-29 07:22:35,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:22:35,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:35,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:22:35,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:22:35,571 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-29 07:23:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:00,965 INFO L93 Difference]: Finished difference Result 4083 states and 7566 transitions. [2020-10-29 07:23:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:23:00,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-29 07:23:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:01,034 INFO L225 Difference]: With dead ends: 4083 [2020-10-29 07:23:01,035 INFO L226 Difference]: Without dead ends: 2871 [2020-10-29 07:23:01,053 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 07:23:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-10-29 07:23:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1934. [2020-10-29 07:23:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-29 07:23:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-29 07:23:01,319 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 69 [2020-10-29 07:23:01,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:01,322 INFO L481 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-29 07:23:01,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:23:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-29 07:23:01,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 07:23:01,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:01,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:23:01,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:23:01,346 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:01,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:01,348 INFO L82 PathProgramCache]: Analyzing trace with hash -841235567, now seen corresponding path program 1 times [2020-10-29 07:23:01,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:01,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528290770] [2020-10-29 07:23:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:05,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:05,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 07:23:05,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:23:05,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3670 [2020-10-29 07:23:05,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:05,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:23:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 07:23:05,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:23:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:05,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:05,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:23:05,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:05,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:23:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:23:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:23:05,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:05,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:05,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:23:05,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 07:23:05,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:05,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:23:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:23:05,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528290770] [2020-10-29 07:23:05,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:05,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:23:05,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253825207] [2020-10-29 07:23:05,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:23:05,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:05,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:23:05,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:23:05,693 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 5 states. [2020-10-29 07:23:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:26,668 INFO L93 Difference]: Finished difference Result 5535 states and 9189 transitions. [2020-10-29 07:23:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:23:26,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-29 07:23:26,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:26,693 INFO L225 Difference]: With dead ends: 5535 [2020-10-29 07:23:26,694 INFO L226 Difference]: Without dead ends: 3607 [2020-10-29 07:23:26,702 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 07:23:26,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2020-10-29 07:23:26,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3583. [2020-10-29 07:23:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3583 states. [2020-10-29 07:23:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 5170 transitions. [2020-10-29 07:23:26,838 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 5170 transitions. Word has length 144 [2020-10-29 07:23:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:26,842 INFO L481 AbstractCegarLoop]: Abstraction has 3583 states and 5170 transitions. [2020-10-29 07:23:26,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:23:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 5170 transitions. [2020-10-29 07:23:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 07:23:26,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:26,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:23:26,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:23:26,849 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1211981668, now seen corresponding path program 1 times [2020-10-29 07:23:26,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:26,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868494492] [2020-10-29 07:23:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:26,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:27,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:27,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:28,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:28,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:23:28,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:23:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-29 07:23:28,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:28,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-29 07:23:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:23:28,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:23:28,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:28,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:28,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:23:28,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:28,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:23:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:23:28,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:28,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:28,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:28,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:23:28,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:23:28,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 07:23:28,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:28,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:23:28,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:23:28,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868494492] [2020-10-29 07:23:28,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:28,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:23:28,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929970903] [2020-10-29 07:23:28,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:23:28,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:28,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:23:28,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:23:28,956 INFO L87 Difference]: Start difference. First operand 3583 states and 5170 transitions. Second operand 5 states. [2020-10-29 07:23:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:47,197 INFO L93 Difference]: Finished difference Result 10550 states and 15473 transitions. [2020-10-29 07:23:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:23:47,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-29 07:23:47,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:47,251 INFO L225 Difference]: With dead ends: 10550 [2020-10-29 07:23:47,251 INFO L226 Difference]: Without dead ends: 6973 [2020-10-29 07:23:47,262 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 07:23:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2020-10-29 07:23:47,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 6901. [2020-10-29 07:23:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6901 states. [2020-10-29 07:23:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6901 states to 6901 states and 10033 transitions. [2020-10-29 07:23:47,498 INFO L78 Accepts]: Start accepts. Automaton has 6901 states and 10033 transitions. Word has length 151 [2020-10-29 07:23:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:47,500 INFO L481 AbstractCegarLoop]: Abstraction has 6901 states and 10033 transitions. [2020-10-29 07:23:47,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:23:47,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6901 states and 10033 transitions. [2020-10-29 07:23:47,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 07:23:47,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:47,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:23:47,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:23:47,507 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:47,507 INFO L82 PathProgramCache]: Analyzing trace with hash -258041510, now seen corresponding path program 1 times [2020-10-29 07:23:47,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:47,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541989197] [2020-10-29 07:23:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:47,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:47,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:50,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:50,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:23:50,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:23:50,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2742 [2020-10-29 07:23:50,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:50,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:23:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:23:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 07:23:50,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:50,702 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 26 [2020-10-29 07:23:50,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:50,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:50,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:50,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:50,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:23:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:50,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:23:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:51,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:51,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:23:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:23:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:23:51,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:51,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 07:23:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:23:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:23:51,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541989197] [2020-10-29 07:23:51,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:51,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:23:51,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644659287] [2020-10-29 07:23:51,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:23:51,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:51,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:23:51,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:23:51,226 INFO L87 Difference]: Start difference. First operand 6901 states and 10033 transitions. Second operand 7 states. [2020-10-29 07:23:52,263 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 07:23:52,917 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-29 07:24:09,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:24:09,151 INFO L93 Difference]: Finished difference Result 13840 states and 20214 transitions. [2020-10-29 07:24:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:24:09,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-29 07:24:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:24:09,193 INFO L225 Difference]: With dead ends: 13840 [2020-10-29 07:24:09,193 INFO L226 Difference]: Without dead ends: 6892 [2020-10-29 07:24:09,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:24:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6892 states. [2020-10-29 07:24:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6892 to 6888. [2020-10-29 07:24:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6888 states. [2020-10-29 07:24:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 9998 transitions. [2020-10-29 07:24:09,418 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 9998 transitions. Word has length 151 [2020-10-29 07:24:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:24:09,419 INFO L481 AbstractCegarLoop]: Abstraction has 6888 states and 9998 transitions. [2020-10-29 07:24:09,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:24:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 9998 transitions. [2020-10-29 07:24:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 07:24:09,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:24:09,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:24:09,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:24:09,423 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:24:09,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:24:09,424 INFO L82 PathProgramCache]: Analyzing trace with hash 658777357, now seen corresponding path program 1 times [2020-10-29 07:24:09,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:24:09,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248582827] [2020-10-29 07:24:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:24:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:10,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:10,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 07:24:10,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:24:10,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-10-29 07:24:10,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:10,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:10,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:10,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 07:24:10,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 07:24:10,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:10,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:10,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:10,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:10,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:10,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:24:10,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:10,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:24:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:24:10,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:10,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:11,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:11,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:24:11,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:11,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 07:24:11,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:11,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:11,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:11,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:11,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:24:11,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:24:11,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248582827] [2020-10-29 07:24:11,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:24:11,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:24:11,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881601856] [2020-10-29 07:24:11,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:24:11,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:11,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:24:11,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:24:11,107 INFO L87 Difference]: Start difference. First operand 6888 states and 9998 transitions. Second operand 5 states. [2020-10-29 07:24:11,690 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:24:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:24:39,127 INFO L93 Difference]: Finished difference Result 17047 states and 25892 transitions. [2020-10-29 07:24:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:24:39,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-29 07:24:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:24:39,182 INFO L225 Difference]: With dead ends: 17047 [2020-10-29 07:24:39,182 INFO L226 Difference]: Without dead ends: 10165 [2020-10-29 07:24:39,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:24:39,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10165 states. [2020-10-29 07:24:39,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10165 to 10148. [2020-10-29 07:24:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10148 states. [2020-10-29 07:24:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10148 states to 10148 states and 14466 transitions. [2020-10-29 07:24:39,525 INFO L78 Accepts]: Start accepts. Automaton has 10148 states and 14466 transitions. Word has length 158 [2020-10-29 07:24:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:24:39,526 INFO L481 AbstractCegarLoop]: Abstraction has 10148 states and 14466 transitions. [2020-10-29 07:24:39,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:24:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 10148 states and 14466 transitions. [2020-10-29 07:24:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 07:24:39,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:24:39,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:24:39,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:24:39,532 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:24:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:24:39,533 INFO L82 PathProgramCache]: Analyzing trace with hash 718503096, now seen corresponding path program 1 times [2020-10-29 07:24:39,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:24:39,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752106377] [2020-10-29 07:24:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:24:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:39,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:40,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:40,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 07:24:40,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:24:40,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1197 [2020-10-29 07:24:40,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:40,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:24:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:24:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:24:40,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:40,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:40,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:40,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:24:40,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:40,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:24:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:41,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:41,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 07:24:41,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-29 07:24:41,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:41,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:24:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:24:41,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752106377] [2020-10-29 07:24:41,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:24:41,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:24:41,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649139278] [2020-10-29 07:24:41,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:24:41,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:41,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:24:41,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:24:41,540 INFO L87 Difference]: Start difference. First operand 10148 states and 14466 transitions. Second operand 7 states. [2020-10-29 07:24:41,684 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:25:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:25:15,642 INFO L93 Difference]: Finished difference Result 24879 states and 37285 transitions. [2020-10-29 07:25:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:25:15,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-29 07:25:15,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:25:15,728 INFO L225 Difference]: With dead ends: 24879 [2020-10-29 07:25:15,729 INFO L226 Difference]: Without dead ends: 14736 [2020-10-29 07:25:15,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:25:15,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14736 states. [2020-10-29 07:25:16,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14736 to 14543. [2020-10-29 07:25:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14543 states. [2020-10-29 07:25:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14543 states to 14543 states and 20351 transitions. [2020-10-29 07:25:16,231 INFO L78 Accepts]: Start accepts. Automaton has 14543 states and 20351 transitions. Word has length 192 [2020-10-29 07:25:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:25:16,233 INFO L481 AbstractCegarLoop]: Abstraction has 14543 states and 20351 transitions. [2020-10-29 07:25:16,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:25:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 14543 states and 20351 transitions. [2020-10-29 07:25:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-29 07:25:16,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:16,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:25:16,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:25:16,241 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:16,241 INFO L82 PathProgramCache]: Analyzing trace with hash 378041186, now seen corresponding path program 1 times [2020-10-29 07:25:16,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:16,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453266981] [2020-10-29 07:25:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:16,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:17,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:17,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 07:25:17,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:25:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-29 07:25:17,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:17,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:25:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:25:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 07:25:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:17,917 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:25:17,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:17,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:17,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:17,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:17,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:25:17,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:17,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:25:17,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:25:17,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:25:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:18,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:18,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 07:25:18,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:18,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 07:25:18,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:18,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:18,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:25:18,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:25:18,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 07:25:18,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:25:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:25:18,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453266981] [2020-10-29 07:25:18,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:25:18,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:25:18,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162015626] [2020-10-29 07:25:18,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:25:18,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:25:18,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:25:18,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:25:18,494 INFO L87 Difference]: Start difference. First operand 14543 states and 20351 transitions. Second operand 7 states. [2020-10-29 07:25:18,655 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:25:22,619 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:25:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:25:53,367 INFO L93 Difference]: Finished difference Result 33051 states and 48904 transitions. [2020-10-29 07:25:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:25:53,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-29 07:25:53,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:25:53,471 INFO L225 Difference]: With dead ends: 33051 [2020-10-29 07:25:53,471 INFO L226 Difference]: Without dead ends: 18514 [2020-10-29 07:25:53,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:25:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18514 states. [2020-10-29 07:25:54,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18514 to 18375. [2020-10-29 07:25:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18375 states. [2020-10-29 07:25:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18375 states to 18375 states and 25616 transitions. [2020-10-29 07:25:54,075 INFO L78 Accepts]: Start accepts. Automaton has 18375 states and 25616 transitions. Word has length 206 [2020-10-29 07:25:54,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:25:54,075 INFO L481 AbstractCegarLoop]: Abstraction has 18375 states and 25616 transitions. [2020-10-29 07:25:54,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:25:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 18375 states and 25616 transitions. [2020-10-29 07:25:54,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-29 07:25:54,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:54,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:25:54,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:25:54,091 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:54,092 INFO L82 PathProgramCache]: Analyzing trace with hash 293123937, now seen corresponding path program 1 times [2020-10-29 07:25:54,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:54,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598250092] [2020-10-29 07:25:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:55,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:56,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:59,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-29 07:25:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:25:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 07:25:59,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:59,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:25:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:25:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-29 07:25:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:59,420 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:25:59,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:59,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:59,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:59,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:25:59,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:59,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:25:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:25:59,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:25:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:59,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:59,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:25:59,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:25:59,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-29 07:25:59,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:59,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:25:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:25:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:59,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:00,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:00,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 07:26:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-29 07:26:00,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:00,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 07:26:00,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:26:00,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598250092] [2020-10-29 07:26:00,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:26:00,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:26:00,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138913739] [2020-10-29 07:26:00,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:26:00,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:26:00,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:26:00,610 INFO L87 Difference]: Start difference. First operand 18375 states and 25616 transitions. Second operand 7 states. [2020-10-29 07:26:04,018 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 67