/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=SHALLOWEST --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/Problem15_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:42:31,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:42:31,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:42:31,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:42:31,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:42:31,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:42:31,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:42:31,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:42:31,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:42:31,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:42:31,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:42:31,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:42:31,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:42:31,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:42:31,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:42:31,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:42:31,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:42:31,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:42:31,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:42:31,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:42:31,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:42:31,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:42:31,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:42:31,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:42:31,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:42:31,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:42:31,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:42:31,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:42:31,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:42:31,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:42:31,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:42:31,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:42:31,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:42:31,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:42:31,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:42:31,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:42:31,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:42:31,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:42:31,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:42:31,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:42:31,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:42:31,889 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 [2020-10-26 23:42:31,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:42:31,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:42:31,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:42:31,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:42:31,955 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:42:31,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:42:31,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:42:31,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:42:31,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:42:31,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:42:31,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:42:31,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:42:31,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:42:31,959 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:42:31,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:42:31,960 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:42:31,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:42:31,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:42:31,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:42:31,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:42:31,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:42:31,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:42:31,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:42:31,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:42:31,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:42:31,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:42:31,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:42:31,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:42:31,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:42:31,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:42:32,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:42:32,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:42:32,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:42:32,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:42:32,401 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:42:32,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label33.c [2020-10-26 23:42:32,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7529b422/60472b0933af481da3c24da971467d58/FLAG886bfdbfa [2020-10-26 23:42:33,368 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:42:33,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label33.c [2020-10-26 23:42:33,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7529b422/60472b0933af481da3c24da971467d58/FLAG886bfdbfa [2020-10-26 23:42:33,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7529b422/60472b0933af481da3c24da971467d58 [2020-10-26 23:42:33,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:42:33,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:42:33,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:42:33,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:42:33,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:42:33,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:42:33" (1/1) ... [2020-10-26 23:42:33,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30631405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:33, skipping insertion in model container [2020-10-26 23:42:33,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:42:33" (1/1) ... [2020-10-26 23:42:33,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:42:33,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:42:34,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:42:34,478 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:42:34,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:42:34,758 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:42:34,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34 WrapperNode [2020-10-26 23:42:34,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:42:34,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:42:34,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:42:34,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:42:34,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34" (1/1) ... [2020-10-26 23:42:34,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34" (1/1) ... [2020-10-26 23:42:34,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34" (1/1) ... [2020-10-26 23:42:34,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34" (1/1) ... [2020-10-26 23:42:34,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34" (1/1) ... [2020-10-26 23:42:34,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34" (1/1) ... [2020-10-26 23:42:34,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34" (1/1) ... [2020-10-26 23:42:35,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:42:35,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:42:35,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:42:35,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:42:35,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34" (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 [2020-10-26 23:42:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:42:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:42:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:42:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:42:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:42:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:42:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:42:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:42:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:42:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:42:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:42:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:42:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:42:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:42:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:42:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:42:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:42:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:42:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:42:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:42:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:42:38,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:42:38,842 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:42:38,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:38 BoogieIcfgContainer [2020-10-26 23:42:38,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:42:38,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:42:38,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:42:38,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:42:38,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:42:33" (1/3) ... [2020-10-26 23:42:38,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a71479f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:38, skipping insertion in model container [2020-10-26 23:42:38,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:34" (2/3) ... [2020-10-26 23:42:38,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a71479f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:38, skipping insertion in model container [2020-10-26 23:42:38,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:38" (3/3) ... [2020-10-26 23:42:38,857 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label33.c [2020-10-26 23:42:38,870 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:42:38,877 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:42:38,893 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:42:38,931 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:42:38,931 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:42:38,932 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:42:38,932 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:42:38,932 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:42:38,932 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:42:38,932 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:42:38,932 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:42:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:42:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-26 23:42:38,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:38,974 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] [2020-10-26 23:42:38,974 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:38,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:38,982 INFO L82 PathProgramCache]: Analyzing trace with hash 907733407, now seen corresponding path program 1 times [2020-10-26 23:42:38,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:38,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437295245] [2020-10-26 23:42:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:39,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:39,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:39,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 23:42:39,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-10-26 23:42:39,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:39,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:39,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:39,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 23:42:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:42:39,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:40,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:40,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:42:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:40,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437295245] [2020-10-26 23:42:40,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:40,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:42:40,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256446386] [2020-10-26 23:42:40,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:42:40,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:40,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:42:40,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:42:40,088 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:42:48,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:48,989 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-26 23:42:48,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:42:48,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-26 23:42:48,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:49,014 INFO L225 Difference]: With dead ends: 1229 [2020-10-26 23:42:49,018 INFO L226 Difference]: Without dead ends: 709 [2020-10-26 23:42:49,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:42:49,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-26 23:42:49,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-26 23:42:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-26 23:42:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-26 23:42:49,158 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 29 [2020-10-26 23:42:49,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:49,159 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-26 23:42:49,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:42:49,159 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-26 23:42:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-26 23:42:49,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:49,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:49,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:42:49,165 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:49,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:49,166 INFO L82 PathProgramCache]: Analyzing trace with hash 950318823, now seen corresponding path program 1 times [2020-10-26 23:42:49,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:49,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272184022] [2020-10-26 23:42:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:50,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:50,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:42:50,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:42:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-26 23:42:50,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:42:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-26 23:42:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:42:50,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:50,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:50,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:50,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:42:50,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:51,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:51,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:42:51,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:42:51,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-26 23:42:51,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:42:51,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:42:51,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272184022] [2020-10-26 23:42:51,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:42:51,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:42:51,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283709041] [2020-10-26 23:42:51,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:42:51,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:51,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:42:51,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:42:51,314 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 6 states. [2020-10-26 23:42:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:58,552 INFO L93 Difference]: Finished difference Result 1709 states and 2727 transitions. [2020-10-26 23:42:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 23:42:58,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-26 23:42:58,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:58,563 INFO L225 Difference]: With dead ends: 1709 [2020-10-26 23:42:58,564 INFO L226 Difference]: Without dead ends: 1020 [2020-10-26 23:42:58,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:42:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2020-10-26 23:42:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1013. [2020-10-26 23:42:58,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-10-26 23:42:58,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1370 transitions. [2020-10-26 23:42:58,625 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1370 transitions. Word has length 99 [2020-10-26 23:42:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:58,626 INFO L481 AbstractCegarLoop]: Abstraction has 1013 states and 1370 transitions. [2020-10-26 23:42:58,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:42:58,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1370 transitions. [2020-10-26 23:42:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-26 23:42:58,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:58,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:58,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:42:58,642 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:58,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2035580204, now seen corresponding path program 1 times [2020-10-26 23:42:58,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:58,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080303915] [2020-10-26 23:42:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:59,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:00,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:00,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:43:00,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:00,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1328 [2020-10-26 23:43:00,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:43:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 23:43:00,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:00,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:00,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:00,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:43:00,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:00,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:00,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:00,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:00,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:43:00,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:00,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-26 23:43:00,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:43:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:43:00,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080303915] [2020-10-26 23:43:00,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:43:00,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:43:00,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648289236] [2020-10-26 23:43:00,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:43:00,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:00,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:43:00,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:43:00,741 INFO L87 Difference]: Start difference. First operand 1013 states and 1370 transitions. Second operand 7 states. [2020-10-26 23:43:10,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:10,421 INFO L93 Difference]: Finished difference Result 2400 states and 3403 transitions. [2020-10-26 23:43:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:43:10,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-26 23:43:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:10,437 INFO L225 Difference]: With dead ends: 2400 [2020-10-26 23:43:10,437 INFO L226 Difference]: Without dead ends: 1700 [2020-10-26 23:43:10,441 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 [2020-10-26 23:43:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2020-10-26 23:43:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1349. [2020-10-26 23:43:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2020-10-26 23:43:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1741 transitions. [2020-10-26 23:43:10,499 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1741 transitions. Word has length 112 [2020-10-26 23:43:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:10,500 INFO L481 AbstractCegarLoop]: Abstraction has 1349 states and 1741 transitions. [2020-10-26 23:43:10,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1741 transitions. [2020-10-26 23:43:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-26 23:43:10,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:10,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:10,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:43:10,504 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:10,505 INFO L82 PathProgramCache]: Analyzing trace with hash -689564534, now seen corresponding path program 1 times [2020-10-26 23:43:10,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:10,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147458259] [2020-10-26 23:43:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:10,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:11,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:13,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:13,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-26 23:43:13,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:43:13,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3036 [2020-10-26 23:43:13,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:43:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:43:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:13,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:13,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:13,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:43:13,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:13,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:13,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:14,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:14,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:43:14,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:14,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-26 23:43:14,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:43:14,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:43:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:43:14,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147458259] [2020-10-26 23:43:14,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:43:14,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:43:14,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538178097] [2020-10-26 23:43:14,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:43:14,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:14,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:43:14,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:43:14,886 INFO L87 Difference]: Start difference. First operand 1349 states and 1741 transitions. Second operand 7 states. [2020-10-26 23:43:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:25,591 INFO L93 Difference]: Finished difference Result 3030 states and 3836 transitions. [2020-10-26 23:43:25,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:43:25,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-26 23:43:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:25,629 INFO L225 Difference]: With dead ends: 3030 [2020-10-26 23:43:25,630 INFO L226 Difference]: Without dead ends: 1687 [2020-10-26 23:43:25,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:43:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2020-10-26 23:43:25,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1660. [2020-10-26 23:43:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2020-10-26 23:43:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2062 transitions. [2020-10-26 23:43:25,694 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2062 transitions. Word has length 229 [2020-10-26 23:43:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:25,695 INFO L481 AbstractCegarLoop]: Abstraction has 1660 states and 2062 transitions. [2020-10-26 23:43:25,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2062 transitions. [2020-10-26 23:43:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-26 23:43:25,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:25,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:25,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:43:25,702 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:25,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:25,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2079802861, now seen corresponding path program 1 times [2020-10-26 23:43:25,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:25,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501081082] [2020-10-26 23:43:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:26,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:27,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:27,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-26 23:43:27,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:27,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-10-26 23:43:27,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:43:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-26 23:43:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:28,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:28,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:28,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:28,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:28,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:43:28,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:28,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:28,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:28,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:43:28,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-26 23:43:28,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:43:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:43:29,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501081082] [2020-10-26 23:43:29,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:29,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:43:29,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999092805] [2020-10-26 23:43:29,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:43:29,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:29,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:43:29,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:43:29,130 INFO L87 Difference]: Start difference. First operand 1660 states and 2062 transitions. Second operand 6 states. [2020-10-26 23:43:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:39,592 INFO L93 Difference]: Finished difference Result 3987 states and 5131 transitions. [2020-10-26 23:43:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:43:39,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 303 [2020-10-26 23:43:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:39,621 INFO L225 Difference]: With dead ends: 3987 [2020-10-26 23:43:39,622 INFO L226 Difference]: Without dead ends: 2640 [2020-10-26 23:43:39,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:43:39,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2020-10-26 23:43:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2607. [2020-10-26 23:43:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2607 states. [2020-10-26 23:43:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 3149 transitions. [2020-10-26 23:43:39,750 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 3149 transitions. Word has length 303 [2020-10-26 23:43:39,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:39,752 INFO L481 AbstractCegarLoop]: Abstraction has 2607 states and 3149 transitions. [2020-10-26 23:43:39,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:43:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 3149 transitions. [2020-10-26 23:43:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-26 23:43:39,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:39,762 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:39,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:43:39,762 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:39,763 INFO L82 PathProgramCache]: Analyzing trace with hash 931529558, now seen corresponding path program 1 times [2020-10-26 23:43:39,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:39,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529874652] [2020-10-26 23:43:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:40,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:44,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:44,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-26 23:43:44,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:43:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 23:43:44,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:43:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 329 [2020-10-26 23:43:44,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:45,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:45,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:45,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:43:45,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:45,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:45,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:45,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:43:45,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-26 23:43:45,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:45,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:43:45,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:43:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:45,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:46,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:46,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:43:46,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-26 23:43:46,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:43:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:46,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:43:46,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:47,110 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-10-26 23:43:47,283 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 23:43:47,424 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-26 23:43:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:43:48,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529874652] [2020-10-26 23:43:48,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:48,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:43:48,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403779603] [2020-10-26 23:43:48,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:43:48,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:48,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:43:48,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:43:48,409 INFO L87 Difference]: Start difference. First operand 2607 states and 3149 transitions. Second operand 12 states. [2020-10-26 23:43:48,735 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2020-10-26 23:43:50,282 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-26 23:43:50,971 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2020-10-26 23:43:51,254 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-10-26 23:43:52,490 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-10-26 23:43:53,740 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-26 23:43:54,694 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-26 23:43:55,015 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-26 23:43:55,421 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-26 23:43:56,397 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2020-10-26 23:43:56,861 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-26 23:44:10,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:10,894 INFO L93 Difference]: Finished difference Result 3616 states and 4688 transitions. [2020-10-26 23:44:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 23:44:10,897 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 324 [2020-10-26 23:44:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:10,919 INFO L225 Difference]: With dead ends: 3616 [2020-10-26 23:44:10,919 INFO L226 Difference]: Without dead ends: 3613 [2020-10-26 23:44:10,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=315, Invalid=875, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 23:44:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states. [2020-10-26 23:44:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 3242. [2020-10-26 23:44:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3242 states. [2020-10-26 23:44:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4110 transitions. [2020-10-26 23:44:11,052 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4110 transitions. Word has length 324 [2020-10-26 23:44:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:11,053 INFO L481 AbstractCegarLoop]: Abstraction has 3242 states and 4110 transitions. [2020-10-26 23:44:11,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:44:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4110 transitions. [2020-10-26 23:44:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-26 23:44:11,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:11,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:11,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:44:11,067 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:11,069 INFO L82 PathProgramCache]: Analyzing trace with hash 841609667, now seen corresponding path program 1 times [2020-10-26 23:44:11,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:11,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102733247] [2020-10-26 23:44:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:11,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:16,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:16,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-26 23:44:16,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:44:16,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 23:44:16,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:16,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:16,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:44:16,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:44:16,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:16,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:16,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:16,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:16,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:44:16,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:16,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:16,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:16,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:16,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:44:16,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-26 23:44:16,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:44:16,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:17,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:44:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:17,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:17,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:17,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:44:17,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:44:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-26 23:44:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:17,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:17,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:17,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:17,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:44:17,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:44:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:17,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 144 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-26 23:44:17,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102733247] [2020-10-26 23:44:17,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:17,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:17,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221084086] [2020-10-26 23:44:17,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:17,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:17,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:17,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:17,702 INFO L87 Difference]: Start difference. First operand 3242 states and 4110 transitions. Second operand 7 states. [2020-10-26 23:44:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:31,878 INFO L93 Difference]: Finished difference Result 8145 states and 10799 transitions. [2020-10-26 23:44:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:44:31,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-26 23:44:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:31,907 INFO L225 Difference]: With dead ends: 8145 [2020-10-26 23:44:31,907 INFO L226 Difference]: Without dead ends: 5216 [2020-10-26 23:44:31,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2020-10-26 23:44:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 4844. [2020-10-26 23:44:32,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4844 states. [2020-10-26 23:44:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 6081 transitions. [2020-10-26 23:44:32,075 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 6081 transitions. Word has length 459 [2020-10-26 23:44:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:32,076 INFO L481 AbstractCegarLoop]: Abstraction has 4844 states and 6081 transitions. [2020-10-26 23:44:32,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:32,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 6081 transitions. [2020-10-26 23:44:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-26 23:44:32,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:32,090 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:32,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:44:32,091 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:32,092 INFO L82 PathProgramCache]: Analyzing trace with hash 189356166, now seen corresponding path program 1 times [2020-10-26 23:44:32,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:32,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170426507] [2020-10-26 23:44:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:34,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:34,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:37,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:37,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-26 23:44:37,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:44:37,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 23:44:37,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:44:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:44:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:44:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:37,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:37,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:37,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:37,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:44:37,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:37,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:37,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:37,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:44:37,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:37,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:44:37,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:44:37,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:37,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:44:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:37,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:38,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:38,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:44:38,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-26 23:44:38,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:44:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:38,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:44:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:38,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:38,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:38,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:44:38,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:44:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:38,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-26 23:44:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:38,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:38,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:38,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:44:38,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:44:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 184 proven. 152 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-26 23:44:38,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170426507] [2020-10-26 23:44:38,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:38,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:38,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398543615] [2020-10-26 23:44:38,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:38,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:38,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:38,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:38,604 INFO L87 Difference]: Start difference. First operand 4844 states and 6081 transitions. Second operand 7 states. [2020-10-26 23:44:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:57,767 INFO L93 Difference]: Finished difference Result 11954 states and 15289 transitions. [2020-10-26 23:44:57,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:44:57,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 480 [2020-10-26 23:44:57,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:57,802 INFO L225 Difference]: With dead ends: 11954 [2020-10-26 23:44:57,803 INFO L226 Difference]: Without dead ends: 6451 [2020-10-26 23:44:57,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:57,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2020-10-26 23:44:57,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 5809. [2020-10-26 23:44:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5809 states. [2020-10-26 23:44:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5809 states to 5809 states and 6914 transitions. [2020-10-26 23:44:57,988 INFO L78 Accepts]: Start accepts. Automaton has 5809 states and 6914 transitions. Word has length 480 [2020-10-26 23:44:57,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:57,989 INFO L481 AbstractCegarLoop]: Abstraction has 5809 states and 6914 transitions. [2020-10-26 23:44:57,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5809 states and 6914 transitions. [2020-10-26 23:44:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-26 23:44:58,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:58,003 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:58,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:44:58,003 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:58,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:58,004 INFO L82 PathProgramCache]: Analyzing trace with hash -253171598, now seen corresponding path program 1 times [2020-10-26 23:44:58,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:58,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66795195] [2020-10-26 23:44:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:58,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:58,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:58,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:03,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:03,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-26 23:45:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-26 23:45:03,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:45:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:45:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:03,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:03,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:03,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:03,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:03,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:45:03,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:03,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:03,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:03,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:03,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:45:03,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:03,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-26 23:45:03,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:45:03,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:45:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:04,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:04,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:04,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:45:04,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:45:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:04,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:45:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:04,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:04,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:04,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:45:04,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:45:04,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:45:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 175 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-26 23:45:04,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66795195] [2020-10-26 23:45:04,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:04,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:04,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271133064] [2020-10-26 23:45:04,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:04,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:04,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:04,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:04,666 INFO L87 Difference]: Start difference. First operand 5809 states and 6914 transitions. Second operand 7 states. [2020-10-26 23:45:09,062 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:45:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:16,535 INFO L93 Difference]: Finished difference Result 12632 states and 15124 transitions. [2020-10-26 23:45:16,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:45:16,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 490 [2020-10-26 23:45:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:16,570 INFO L225 Difference]: With dead ends: 12632 [2020-10-26 23:45:16,570 INFO L226 Difference]: Without dead ends: 7136 [2020-10-26 23:45:16,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7136 states. [2020-10-26 23:45:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7136 to 6768. [2020-10-26 23:45:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6768 states. [2020-10-26 23:45:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6768 states to 6768 states and 7842 transitions. [2020-10-26 23:45:16,810 INFO L78 Accepts]: Start accepts. Automaton has 6768 states and 7842 transitions. Word has length 490 [2020-10-26 23:45:16,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:16,811 INFO L481 AbstractCegarLoop]: Abstraction has 6768 states and 7842 transitions. [2020-10-26 23:45:16,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6768 states and 7842 transitions. [2020-10-26 23:45:16,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-26 23:45:16,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:16,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:16,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:45:16,818 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:16,819 INFO L82 PathProgramCache]: Analyzing trace with hash 39795578, now seen corresponding path program 1 times [2020-10-26 23:45:16,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:16,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511185473] [2020-10-26 23:45:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:17,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:20,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:20,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-26 23:45:20,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:20,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3192 [2020-10-26 23:45:20,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:20,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:20,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:20,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:45:20,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:20,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:20,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:20,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:20,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:45:20,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:20,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:20,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:20,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:20,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:45:20,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:20,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:20,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:20,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:45:20,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:20,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:20,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:20,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:45:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:45:20,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:45:20,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:20,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511185473] [2020-10-26 23:45:20,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:20,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:20,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13620087] [2020-10-26 23:45:20,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:20,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:20,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:20,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:20,962 INFO L87 Difference]: Start difference. First operand 6768 states and 7842 transitions. Second operand 7 states. [2020-10-26 23:45:21,117 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:45:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:31,044 INFO L93 Difference]: Finished difference Result 14506 states and 17442 transitions. [2020-10-26 23:45:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:45:31,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 502 [2020-10-26 23:45:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:31,077 INFO L225 Difference]: With dead ends: 14506 [2020-10-26 23:45:31,077 INFO L226 Difference]: Without dead ends: 8051 [2020-10-26 23:45:31,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8051 states. [2020-10-26 23:45:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8051 to 7065. [2020-10-26 23:45:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7065 states. [2020-10-26 23:45:31,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7065 states to 7065 states and 8565 transitions. [2020-10-26 23:45:31,288 INFO L78 Accepts]: Start accepts. Automaton has 7065 states and 8565 transitions. Word has length 502 [2020-10-26 23:45:31,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:31,289 INFO L481 AbstractCegarLoop]: Abstraction has 7065 states and 8565 transitions. [2020-10-26 23:45:31,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 7065 states and 8565 transitions. [2020-10-26 23:45:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-10-26 23:45:31,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:31,297 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:31,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:45:31,297 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:31,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:31,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1424540244, now seen corresponding path program 1 times [2020-10-26 23:45:31,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:31,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522757894] [2020-10-26 23:45:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-26 23:45:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1199 [2020-10-26 23:45:32,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:45:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:32,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:32,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:32,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:32,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:45:32,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:32,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:33,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:33,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:33,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:45:33,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:33,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:33,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:33,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:33,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:45:33,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:33,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:33,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:33,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:45:33,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:45:33,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-26 23:45:33,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:45:33,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:33,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522757894] [2020-10-26 23:45:33,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:33,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:45:33,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889321245] [2020-10-26 23:45:33,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:45:33,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:45:33,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:45:33,864 INFO L87 Difference]: Start difference. First operand 7065 states and 8565 transitions. Second operand 8 states. [2020-10-26 23:45:37,973 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:45:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:51,588 INFO L93 Difference]: Finished difference Result 17912 states and 22848 transitions. [2020-10-26 23:45:51,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:45:51,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 525 [2020-10-26 23:45:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:51,643 INFO L225 Difference]: With dead ends: 17912 [2020-10-26 23:45:51,643 INFO L226 Difference]: Without dead ends: 11160 [2020-10-26 23:45:51,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:45:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11160 states. [2020-10-26 23:45:51,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11160 to 9924. [2020-10-26 23:45:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9924 states. [2020-10-26 23:45:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 12323 transitions. [2020-10-26 23:45:51,982 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 12323 transitions. Word has length 525 [2020-10-26 23:45:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:51,983 INFO L481 AbstractCegarLoop]: Abstraction has 9924 states and 12323 transitions. [2020-10-26 23:45:51,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:45:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 12323 transitions. [2020-10-26 23:45:51,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2020-10-26 23:45:51,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:51,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:51,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:45:51,996 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:51,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:51,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1007661466, now seen corresponding path program 1 times [2020-10-26 23:45:51,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:51,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831515229] [2020-10-26 23:45:51,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:55,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:55,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-26 23:45:55,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:45:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3389 [2020-10-26 23:45:55,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:45:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:55,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:55,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:55,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:55,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:45:55,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:55,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:55,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:55,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:56,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:56,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:56,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:45:56,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:56,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:56,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:56,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:56,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:56,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:45:56,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:56,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:56,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:56,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-26 23:45:56,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:45:56,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:45:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:56,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831515229] [2020-10-26 23:45:56,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:56,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:56,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091204168] [2020-10-26 23:45:56,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:56,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:56,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:56,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:56,862 INFO L87 Difference]: Start difference. First operand 9924 states and 12323 transitions. Second operand 7 states. [2020-10-26 23:46:00,730 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:46:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:11,644 INFO L93 Difference]: Finished difference Result 25767 states and 32705 transitions. [2020-10-26 23:46:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:46:11,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 550 [2020-10-26 23:46:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:11,706 INFO L225 Difference]: With dead ends: 25767 [2020-10-26 23:46:11,706 INFO L226 Difference]: Without dead ends: 14898 [2020-10-26 23:46:11,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14898 states. [2020-10-26 23:46:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14898 to 14883. [2020-10-26 23:46:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14883 states. [2020-10-26 23:46:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14883 states to 14883 states and 17949 transitions. [2020-10-26 23:46:12,143 INFO L78 Accepts]: Start accepts. Automaton has 14883 states and 17949 transitions. Word has length 550 [2020-10-26 23:46:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:12,144 INFO L481 AbstractCegarLoop]: Abstraction has 14883 states and 17949 transitions. [2020-10-26 23:46:12,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 14883 states and 17949 transitions. [2020-10-26 23:46:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-26 23:46:12,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:12,156 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:12,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:46:12,157 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:12,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1069504916, now seen corresponding path program 1 times [2020-10-26 23:46:12,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:12,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777984198] [2020-10-26 23:46:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking...