/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:28:18,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:28:18,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:28:18,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:28:18,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:28:18,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:28:18,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:28:18,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:28:18,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:28:18,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:28:18,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:28:18,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:28:18,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:28:18,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:28:18,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:28:18,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:28:18,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:28:18,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:28:18,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:28:18,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:28:18,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:28:18,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:28:18,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:28:18,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:28:18,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:28:18,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:28:18,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:28:18,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:28:18,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:28:19,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:28:19,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:28:19,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:28:19,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:28:19,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:28:19,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:28:19,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:28:19,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:28:19,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:28:19,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:28:19,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:28:19,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:28:19,018 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 [2020-10-28 12:28:19,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:28:19,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:28:19,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:28:19,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:28:19,090 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:28:19,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:28:19,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:28:19,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:28:19,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:28:19,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:28:19,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:28:19,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:28:19,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:28:19,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:28:19,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:28:19,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:28:19,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:28:19,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:28:19,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:28:19,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:28:19,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:28:19,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:28:19,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:28:19,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:28:19,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:28:19,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:28:19,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:28:19,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:28:19,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:28:19,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:28:19,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:28:19,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:28:19,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:28:19,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:28:19,593 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:28:19,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2020-10-28 12:28:19,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfee368c4/34ba4fff767747a59fa7153d90cd65cc/FLAG55b8ff617 [2020-10-28 12:28:20,968 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:28:20,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2020-10-28 12:28:21,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfee368c4/34ba4fff767747a59fa7153d90cd65cc/FLAG55b8ff617 [2020-10-28 12:28:21,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfee368c4/34ba4fff767747a59fa7153d90cd65cc [2020-10-28 12:28:21,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:28:21,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:28:21,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:28:21,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:28:21,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:28:21,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:28:21" (1/1) ... [2020-10-28 12:28:21,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb131f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:21, skipping insertion in model container [2020-10-28 12:28:21,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:28:21" (1/1) ... [2020-10-28 12:28:21,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:28:21,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:28:23,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:28:23,308 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:28:24,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:28:24,062 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:28:24,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24 WrapperNode [2020-10-28 12:28:24,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:28:24,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:28:24,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:28:24,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:28:24,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24" (1/1) ... [2020-10-28 12:28:24,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24" (1/1) ... [2020-10-28 12:28:24,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24" (1/1) ... [2020-10-28 12:28:24,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24" (1/1) ... [2020-10-28 12:28:24,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24" (1/1) ... [2020-10-28 12:28:24,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24" (1/1) ... [2020-10-28 12:28:24,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24" (1/1) ... [2020-10-28 12:28:24,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:28:24,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:28:24,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:28:24,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:28:24,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24" (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 [2020-10-28 12:28:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:28:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:28:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:28:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:28:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:28:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:28:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:28:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:28:24,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:28:24,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:28:24,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:28:24,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:28:24,551 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:28:24,551 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:28:24,551 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:28:24,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:28:24,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:28:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:28:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:28:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:28:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:28:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:28:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:28:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:28:24,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:28:34,979 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:28:34,979 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:28:34,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:28:34 BoogieIcfgContainer [2020-10-28 12:28:34,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:28:34,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:28:34,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:28:34,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:28:34,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:28:21" (1/3) ... [2020-10-28 12:28:34,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de39141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:28:34, skipping insertion in model container [2020-10-28 12:28:34,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:24" (2/3) ... [2020-10-28 12:28:34,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de39141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:28:34, skipping insertion in model container [2020-10-28 12:28:34,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:28:34" (3/3) ... [2020-10-28 12:28:34,994 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label00.c [2020-10-28 12:28:35,008 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:28:35,016 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:28:35,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:28:35,067 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:28:35,067 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:28:35,067 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:28:35,067 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:28:35,067 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:28:35,068 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:28:35,068 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:28:35,068 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:28:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:28:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 12:28:35,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:35,119 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] [2020-10-28 12:28:35,119 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:35,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:35,127 INFO L82 PathProgramCache]: Analyzing trace with hash 67388114, now seen corresponding path program 1 times [2020-10-28 12:28:35,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:35,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892516491] [2020-10-28 12:28:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:35,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:35,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 12:28:35,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:35,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-28 12:28:35,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:35,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:28:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 12:28:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:28:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:36,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:36,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:36,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:28:36,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:36,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:28:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:36,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892516491] [2020-10-28 12:28:36,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:28:36,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:28:36,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586282919] [2020-10-28 12:28:36,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:28:36,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:36,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:28:36,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:28:36,234 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-28 12:28:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:56,694 INFO L93 Difference]: Finished difference Result 4085 states and 7568 transitions. [2020-10-28 12:28:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:28:56,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-28 12:28:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:56,755 INFO L225 Difference]: With dead ends: 4085 [2020-10-28 12:28:56,756 INFO L226 Difference]: Without dead ends: 2873 [2020-10-28 12:28:56,776 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 [2020-10-28 12:28:56,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-10-28 12:28:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1935. [2020-10-28 12:28:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-28 12:28:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3164 transitions. [2020-10-28 12:28:57,061 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3164 transitions. Word has length 44 [2020-10-28 12:28:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:57,064 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states and 3164 transitions. [2020-10-28 12:28:57,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:28:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3164 transitions. [2020-10-28 12:28:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 12:28:57,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:57,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:57,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:28:57,077 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:57,079 INFO L82 PathProgramCache]: Analyzing trace with hash -191470870, now seen corresponding path program 1 times [2020-10-28 12:28:57,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:57,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835802574] [2020-10-28 12:28:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:57,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:58,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:58,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:28:58,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:28:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1648 [2020-10-28 12:28:58,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:58,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:58,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:28:58,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:28:58,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:28:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:58,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:59,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:59,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:59,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:28:59,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:59,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:28:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:28:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:59,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:59,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:59,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:28:59,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:59,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 12:28:59,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:59,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:28:59,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:59,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835802574] [2020-10-28 12:28:59,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:28:59,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:28:59,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462096290] [2020-10-28 12:28:59,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:59,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:59,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:59,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:59,414 INFO L87 Difference]: Start difference. First operand 1935 states and 3164 transitions. Second operand 7 states. [2020-10-28 12:28:59,593 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:29:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:28,696 INFO L93 Difference]: Finished difference Result 5668 states and 9394 transitions. [2020-10-28 12:29:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:29:28,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-28 12:29:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:28,723 INFO L225 Difference]: With dead ends: 5668 [2020-10-28 12:29:28,723 INFO L226 Difference]: Without dead ends: 3739 [2020-10-28 12:29:28,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:29:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2020-10-28 12:29:28,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 3646. [2020-10-28 12:29:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3646 states. [2020-10-28 12:29:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 5459 transitions. [2020-10-28 12:29:28,892 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 5459 transitions. Word has length 119 [2020-10-28 12:29:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:28,895 INFO L481 AbstractCegarLoop]: Abstraction has 3646 states and 5459 transitions. [2020-10-28 12:29:28,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:29:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 5459 transitions. [2020-10-28 12:29:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 12:29:28,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:28,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:29:28,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:29:28,913 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:28,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:28,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1280942, now seen corresponding path program 1 times [2020-10-28 12:29:28,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:28,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017478341] [2020-10-28 12:29:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:29,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:29,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:30,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:30,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 12:29:30,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:29:30,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-28 12:29:30,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:30,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:29:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:29:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:29:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:29:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:29:30,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:30,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:29:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:30,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:30,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:29:30,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 12:29:30,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:30,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:29:30,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:29:30,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017478341] [2020-10-28 12:29:30,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:29:30,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:29:30,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392818776] [2020-10-28 12:29:30,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:29:30,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:30,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:29:30,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:29:30,595 INFO L87 Difference]: Start difference. First operand 3646 states and 5459 transitions. Second operand 7 states. [2020-10-28 12:29:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:51,354 INFO L93 Difference]: Finished difference Result 10837 states and 16686 transitions. [2020-10-28 12:29:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:29:51,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-28 12:29:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:51,405 INFO L225 Difference]: With dead ends: 10837 [2020-10-28 12:29:51,405 INFO L226 Difference]: Without dead ends: 7197 [2020-10-28 12:29:51,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:29:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7197 states. [2020-10-28 12:29:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7197 to 7099. [2020-10-28 12:29:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7099 states. [2020-10-28 12:29:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7099 states to 7099 states and 9714 transitions. [2020-10-28 12:29:51,659 INFO L78 Accepts]: Start accepts. Automaton has 7099 states and 9714 transitions. Word has length 133 [2020-10-28 12:29:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:51,660 INFO L481 AbstractCegarLoop]: Abstraction has 7099 states and 9714 transitions. [2020-10-28 12:29:51,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:29:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7099 states and 9714 transitions. [2020-10-28 12:29:51,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 12:29:51,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:51,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:29:51,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:29:51,663 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:51,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1889936526, now seen corresponding path program 1 times [2020-10-28 12:29:51,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:51,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535345287] [2020-10-28 12:29:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:52,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:52,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 12:29:52,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:29:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-28 12:29:52,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:52,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:29:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:29:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:29:52,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:52,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:52,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:52,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:52,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:52,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:29:52,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:52,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:29:52,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:53,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:53,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:29:53,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-28 12:29:53,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:53,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:29:53,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:29:53,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535345287] [2020-10-28 12:29:53,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:29:53,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:29:53,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235842553] [2020-10-28 12:29:53,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:29:53,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:53,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:29:53,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:29:53,330 INFO L87 Difference]: Start difference. First operand 7099 states and 9714 transitions. Second operand 7 states. [2020-10-28 12:30:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:18,606 INFO L93 Difference]: Finished difference Result 21571 states and 30679 transitions. [2020-10-28 12:30:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:30:18,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-28 12:30:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:18,680 INFO L225 Difference]: With dead ends: 21571 [2020-10-28 12:30:18,680 INFO L226 Difference]: Without dead ends: 14478 [2020-10-28 12:30:18,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:30:18,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14478 states. [2020-10-28 12:30:19,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14478 to 14216. [2020-10-28 12:30:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14216 states. [2020-10-28 12:30:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14216 states to 14216 states and 18318 transitions. [2020-10-28 12:30:19,161 INFO L78 Accepts]: Start accepts. Automaton has 14216 states and 18318 transitions. Word has length 149 [2020-10-28 12:30:19,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:19,163 INFO L481 AbstractCegarLoop]: Abstraction has 14216 states and 18318 transitions. [2020-10-28 12:30:19,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:30:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 14216 states and 18318 transitions. [2020-10-28 12:30:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 12:30:19,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:19,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:30:19,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:30:19,170 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:19,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1464279561, now seen corresponding path program 1 times [2020-10-28 12:30:19,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:19,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964427513] [2020-10-28 12:30:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:19,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:19,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 12:30:19,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:19,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-28 12:30:19,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:19,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:30:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 12:30:19,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:19,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:19,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:19,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:19,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:19,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:30:19,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:19,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:30:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:30:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:19,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:30:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 12:30:20,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:20,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:30:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:30:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:30:20,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964427513] [2020-10-28 12:30:20,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:30:20,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:30:20,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056469990] [2020-10-28 12:30:20,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:30:20,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:30:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:30:20,114 INFO L87 Difference]: Start difference. First operand 14216 states and 18318 transitions. Second operand 5 states. [2020-10-28 12:30:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:49,431 INFO L93 Difference]: Finished difference Result 36641 states and 49233 transitions. [2020-10-28 12:30:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:30:49,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-28 12:30:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:49,530 INFO L225 Difference]: With dead ends: 36641 [2020-10-28 12:30:49,530 INFO L226 Difference]: Without dead ends: 22431 [2020-10-28 12:30:49,570 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 [2020-10-28 12:30:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22431 states. [2020-10-28 12:30:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22431 to 22361. [2020-10-28 12:30:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22361 states. [2020-10-28 12:30:50,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 28762 transitions. [2020-10-28 12:30:50,169 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 28762 transitions. Word has length 173 [2020-10-28 12:30:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:50,170 INFO L481 AbstractCegarLoop]: Abstraction has 22361 states and 28762 transitions. [2020-10-28 12:30:50,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:30:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 28762 transitions. [2020-10-28 12:30:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-28 12:30:50,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:50,183 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:30:50,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:30:50,183 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:50,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1436978170, now seen corresponding path program 1 times [2020-10-28 12:30:50,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:50,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425711899] [2020-10-28 12:30:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:50,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:54,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:54,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-28 12:30:54,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:30:54,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4487 [2020-10-28 12:30:54,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:54,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:30:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:30:54,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:54,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:54,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:54,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:54,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:54,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:30:54,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:54,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:54,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:30:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:30:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:54,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:54,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:55,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:55,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:30:55,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 12:30:55,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:55,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:30:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:30:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:55,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:55,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:30:55,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 12:30:55,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:55,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:30:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:30:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:30:55,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425711899] [2020-10-28 12:30:55,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:30:55,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:30:55,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885147448] [2020-10-28 12:30:55,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:30:55,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:55,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:30:55,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:30:55,459 INFO L87 Difference]: Start difference. First operand 22361 states and 28762 transitions. Second operand 7 states. [2020-10-28 12:31:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:31:23,525 INFO L93 Difference]: Finished difference Result 52618 states and 70551 transitions. [2020-10-28 12:31:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:31:23,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-28 12:31:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:31:23,668 INFO L225 Difference]: With dead ends: 52618 [2020-10-28 12:31:23,668 INFO L226 Difference]: Without dead ends: 30263 [2020-10-28 12:31:23,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:31:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30263 states. [2020-10-28 12:31:24,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30263 to 29349. [2020-10-28 12:31:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29349 states. [2020-10-28 12:31:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29349 states to 29349 states and 37681 transitions. [2020-10-28 12:31:24,429 INFO L78 Accepts]: Start accepts. Automaton has 29349 states and 37681 transitions. Word has length 242 [2020-10-28 12:31:24,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:31:24,430 INFO L481 AbstractCegarLoop]: Abstraction has 29349 states and 37681 transitions. [2020-10-28 12:31:24,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:31:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 29349 states and 37681 transitions. [2020-10-28 12:31:24,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-28 12:31:24,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:31:24,437 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:31:24,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:31:24,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:31:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:31:24,439 INFO L82 PathProgramCache]: Analyzing trace with hash 112703510, now seen corresponding path program 1 times [2020-10-28 12:31:24,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:31:24,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824250263] [2020-10-28 12:31:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:31:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:24,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:25,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:29,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:29,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 12:31:29,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:31:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 12:31:29,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:29,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:31:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:31:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:31:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:31:29,993 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:31:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:31:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:30,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:31:30,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:31:30,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:30,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:31:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:31:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:31:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:30,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:30,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:30,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:31:30,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:31:30,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:30,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:30,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:31:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:31:30,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:31:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:30,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:30,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:31:30,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:30,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-28 12:31:30,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:30,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:30,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:31:30,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:31:30,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:31:30,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:31:30,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824250263] [2020-10-28 12:31:30,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:31:30,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:31:30,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430510980] [2020-10-28 12:31:30,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:31:30,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:31:30,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:31:30,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:31:30,629 INFO L87 Difference]: Start difference. First operand 29349 states and 37681 transitions. Second operand 7 states. [2020-10-28 12:31:30,809 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:32:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:32:02,781 INFO L93 Difference]: Finished difference Result 78117 states and 103735 transitions. [2020-10-28 12:32:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:32:02,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-28 12:32:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:32:02,983 INFO L225 Difference]: With dead ends: 78117 [2020-10-28 12:32:02,984 INFO L226 Difference]: Without dead ends: 48774 [2020-10-28 12:32:03,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:32:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48774 states. [2020-10-28 12:32:04,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48774 to 48587. [2020-10-28 12:32:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48587 states. [2020-10-28 12:32:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48587 states to 48587 states and 64973 transitions. [2020-10-28 12:32:04,451 INFO L78 Accepts]: Start accepts. Automaton has 48587 states and 64973 transitions. Word has length 244 [2020-10-28 12:32:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:32:04,452 INFO L481 AbstractCegarLoop]: Abstraction has 48587 states and 64973 transitions. [2020-10-28 12:32:04,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:32:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 48587 states and 64973 transitions. [2020-10-28 12:32:04,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-28 12:32:04,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:04,459 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:32:04,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:32:04,460 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:04,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:04,461 INFO L82 PathProgramCache]: Analyzing trace with hash 151129969, now seen corresponding path program 1 times [2020-10-28 12:32:04,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:04,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381862574] [2020-10-28 12:32:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:05,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:06,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:06,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 12:32:06,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:32:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2409 [2020-10-28 12:32:06,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:06,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:32:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:32:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:07,309 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:32:07,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:07,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:07,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:07,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:32:07,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:07,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:32:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:32:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:07,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:32:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:07,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:07,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:32:07,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:07,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 12:32:07,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:07,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:32:07,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:32:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:07,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:07,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:07,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:32:07,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 12:32:07,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:07,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:32:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:32:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:32:08,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381862574] [2020-10-28 12:32:08,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:32:08,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:32:08,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447150972] [2020-10-28 12:32:08,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:32:08,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:08,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:32:08,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:32:08,029 INFO L87 Difference]: Start difference. First operand 48587 states and 64973 transitions. Second operand 7 states.