/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:45:22,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:45:22,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:45:22,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:45:22,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:45:22,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:45:22,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:45:22,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:45:22,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:45:22,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:45:22,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:45:22,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:45:22,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:45:22,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:45:22,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:45:22,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:45:22,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:45:22,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:45:22,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:45:22,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:45:22,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:45:22,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:45:22,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:45:22,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:45:22,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:45:22,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:45:22,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:45:22,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:45:22,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:45:22,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:45:22,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:45:22,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:45:22,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:45:22,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:45:22,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:45:22,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:45:22,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:45:22,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:45:22,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:45:22,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:45:22,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:45:22,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:45:22,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:45:22,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:45:22,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:45:22,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:45:22,500 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:45:22,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:45:22,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:45:22,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:45:22,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:45:22,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:45:22,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:45:22,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:45:22,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:45:22,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:45:22,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:45:22,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:45:22,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:45:22,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:45:22,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:45:22,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:45:22,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:45:22,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:45:22,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:45:22,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:45:22,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:45:22,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:45:22,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:45:22,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:45:22,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:45:22,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:45:22,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:45:22,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:45:22,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:45:22,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:45:22,966 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:45:22,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label25.c [2020-10-29 07:45:23,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33cbfe556/df69f95e9db147ffbd67e1ea087e91b3/FLAGd3936cc1f [2020-10-29 07:45:23,935 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:45:23,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label25.c [2020-10-29 07:45:23,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33cbfe556/df69f95e9db147ffbd67e1ea087e91b3/FLAGd3936cc1f [2020-10-29 07:45:24,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33cbfe556/df69f95e9db147ffbd67e1ea087e91b3 [2020-10-29 07:45:24,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:45:24,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:45:24,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:45:24,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:45:24,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:45:24,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:45:24" (1/1) ... [2020-10-29 07:45:24,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10be05a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:24, skipping insertion in model container [2020-10-29 07:45:24,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:45:24" (1/1) ... [2020-10-29 07:45:24,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:45:24,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:45:25,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:45:25,063 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:45:25,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:45:25,363 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:45:25,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25 WrapperNode [2020-10-29 07:45:25,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:45:25,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:45:25,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:45:25,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:45:25,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25" (1/1) ... [2020-10-29 07:45:25,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25" (1/1) ... [2020-10-29 07:45:25,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25" (1/1) ... [2020-10-29 07:45:25,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25" (1/1) ... [2020-10-29 07:45:25,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25" (1/1) ... [2020-10-29 07:45:25,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25" (1/1) ... [2020-10-29 07:45:25,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25" (1/1) ... [2020-10-29 07:45:25,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:45:25,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:45:25,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:45:25,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:45:25,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:45:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:45:25,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:45:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:45:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:45:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:45:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:45:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:45:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:45:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:45:25,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:45:25,762 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:45:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:45:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:45:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:45:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:45:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:45:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:45:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:45:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:45:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:45:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:45:29,779 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:45:29,779 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:45:29,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:45:29 BoogieIcfgContainer [2020-10-29 07:45:29,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:45:29,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:45:29,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:45:29,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:45:29,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:45:24" (1/3) ... [2020-10-29 07:45:29,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2394c76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:45:29, skipping insertion in model container [2020-10-29 07:45:29,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:25" (2/3) ... [2020-10-29 07:45:29,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2394c76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:45:29, skipping insertion in model container [2020-10-29 07:45:29,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:45:29" (3/3) ... [2020-10-29 07:45:29,793 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label25.c [2020-10-29 07:45:29,807 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:45:29,814 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:45:29,830 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:45:29,885 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:45:29,885 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:45:29,885 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:45:29,886 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:45:29,886 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:45:29,886 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:45:29,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:45:29,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:45:29,932 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:45:29,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 07:45:29,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:29,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:29,943 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:29,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash 415000807, now seen corresponding path program 1 times [2020-10-29 07:45:29,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:29,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383215857] [2020-10-29 07:45:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:30,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:30,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 07:45:30,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-29 07:45:30,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:30,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:45:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 07:45:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:45:30,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:31,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:31,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:31,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:45:31,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:31,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:31,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:31,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383215857] [2020-10-29 07:45:31,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:45:31,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:45:31,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545515516] [2020-10-29 07:45:31,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:45:31,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:31,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:45:31,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:45:31,070 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:45:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:37,245 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-29 07:45:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:45:37,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-29 07:45:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:37,269 INFO L225 Difference]: With dead ends: 1208 [2020-10-29 07:45:37,269 INFO L226 Difference]: Without dead ends: 703 [2020-10-29 07:45:37,283 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 [2020-10-29 07:45:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-29 07:45:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-29 07:45:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-29 07:45:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-29 07:45:37,406 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 31 [2020-10-29 07:45:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:37,406 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-29 07:45:37,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:45:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-29 07:45:37,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 07:45:37,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:37,413 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:37,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:45:37,414 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:37,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:37,415 INFO L82 PathProgramCache]: Analyzing trace with hash 256858956, now seen corresponding path program 1 times [2020-10-29 07:45:37,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:37,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126750000] [2020-10-29 07:45:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:38,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:38,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 07:45:38,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:45:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-10-29 07:45:38,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:38,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:45:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:45:38,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:45:38,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:38,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:38,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:38,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:38,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:45:38,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:38,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:38,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:39,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:39,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:45:39,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:39,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 07:45:39,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:39,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:39,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:39,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:39,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:45:39,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:39,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126750000] [2020-10-29 07:45:39,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:45:39,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:45:39,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17170895] [2020-10-29 07:45:39,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:39,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:39,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:39,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:39,352 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-29 07:45:39,493 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:45:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:53,303 INFO L93 Difference]: Finished difference Result 2072 states and 3049 transitions. [2020-10-29 07:45:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:45:53,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-29 07:45:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:53,320 INFO L225 Difference]: With dead ends: 2072 [2020-10-29 07:45:53,321 INFO L226 Difference]: Without dead ends: 1381 [2020-10-29 07:45:53,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:45:53,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-29 07:45:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1360. [2020-10-29 07:45:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2020-10-29 07:45:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1889 transitions. [2020-10-29 07:45:53,428 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1889 transitions. Word has length 110 [2020-10-29 07:45:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:53,429 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states and 1889 transitions. [2020-10-29 07:45:53,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1889 transitions. [2020-10-29 07:45:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 07:45:53,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:53,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:53,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:45:53,448 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:53,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1560468204, now seen corresponding path program 1 times [2020-10-29 07:45:53,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:53,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092310130] [2020-10-29 07:45:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:54,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:54,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 07:45:54,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:54,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-10-29 07:45:54,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:54,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:45:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:45:54,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:54,667 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:45:54,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:54,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:54,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:54,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:54,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:45:54,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:54,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:54,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:54,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:45:54,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 07:45:54,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:54,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:45:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:55,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092310130] [2020-10-29 07:45:55,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:45:55,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:45:55,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133268983] [2020-10-29 07:45:55,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:55,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:55,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:55,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:55,105 INFO L87 Difference]: Start difference. First operand 1360 states and 1889 transitions. Second operand 7 states. [2020-10-29 07:46:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:08,125 INFO L93 Difference]: Finished difference Result 4040 states and 5668 transitions. [2020-10-29 07:46:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:46:08,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-29 07:46:08,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:08,150 INFO L225 Difference]: With dead ends: 4040 [2020-10-29 07:46:08,151 INFO L226 Difference]: Without dead ends: 2686 [2020-10-29 07:46:08,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:46:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2020-10-29 07:46:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2312. [2020-10-29 07:46:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2020-10-29 07:46:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2963 transitions. [2020-10-29 07:46:08,252 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2963 transitions. Word has length 114 [2020-10-29 07:46:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:08,253 INFO L481 AbstractCegarLoop]: Abstraction has 2312 states and 2963 transitions. [2020-10-29 07:46:08,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2963 transitions. [2020-10-29 07:46:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 07:46:08,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:08,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:08,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:46:08,258 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:08,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:08,259 INFO L82 PathProgramCache]: Analyzing trace with hash -283059918, now seen corresponding path program 1 times [2020-10-29 07:46:08,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:08,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769709508] [2020-10-29 07:46:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:08,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:08,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:09,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:12,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 07:46:12,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:46:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3677 [2020-10-29 07:46:12,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:12,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:46:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:12,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:46:12,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:12,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:12,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:12,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:12,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:46:12,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:12,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:12,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:12,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:12,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:46:12,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:12,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-29 07:46:12,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:12,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:46:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:46:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:46:13,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769709508] [2020-10-29 07:46:13,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:46:13,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:46:13,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780600994] [2020-10-29 07:46:13,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:46:13,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:13,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:46:13,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:46:13,686 INFO L87 Difference]: Start difference. First operand 2312 states and 2963 transitions. Second operand 8 states. [2020-10-29 07:46:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:26,327 INFO L93 Difference]: Finished difference Result 4974 states and 6313 transitions. [2020-10-29 07:46:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:46:26,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2020-10-29 07:46:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:26,349 INFO L225 Difference]: With dead ends: 4974 [2020-10-29 07:46:26,349 INFO L226 Difference]: Without dead ends: 2668 [2020-10-29 07:46:26,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:46:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2020-10-29 07:46:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2628. [2020-10-29 07:46:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2020-10-29 07:46:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3291 transitions. [2020-10-29 07:46:26,455 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3291 transitions. Word has length 231 [2020-10-29 07:46:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:26,456 INFO L481 AbstractCegarLoop]: Abstraction has 2628 states and 3291 transitions. [2020-10-29 07:46:26,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:46:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3291 transitions. [2020-10-29 07:46:26,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 07:46:26,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:26,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:26,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:46:26,463 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:26,464 INFO L82 PathProgramCache]: Analyzing trace with hash 703487091, now seen corresponding path program 1 times [2020-10-29 07:46:26,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:26,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650084343] [2020-10-29 07:46:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:28,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:28,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 07:46:28,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2055 [2020-10-29 07:46:28,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:28,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:46:28,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:28,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 320 [2020-10-29 07:46:28,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:28,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:28,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:28,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:28,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:46:28,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:28,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:28,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:28,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:29,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:29,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:46:29,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:29,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-29 07:46:29,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:29,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:46:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:46:29,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650084343] [2020-10-29 07:46:29,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:29,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:46:29,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462684232] [2020-10-29 07:46:29,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:46:29,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:46:29,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:46:29,852 INFO L87 Difference]: Start difference. First operand 2628 states and 3291 transitions. Second operand 6 states. [2020-10-29 07:46:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:43,221 INFO L93 Difference]: Finished difference Result 5602 states and 7421 transitions. [2020-10-29 07:46:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:46:43,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 317 [2020-10-29 07:46:43,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:43,263 INFO L225 Difference]: With dead ends: 5602 [2020-10-29 07:46:43,263 INFO L226 Difference]: Without dead ends: 4227 [2020-10-29 07:46:43,271 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 [2020-10-29 07:46:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2020-10-29 07:46:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 4200. [2020-10-29 07:46:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4200 states. [2020-10-29 07:46:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 5108 transitions. [2020-10-29 07:46:43,506 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 5108 transitions. Word has length 317 [2020-10-29 07:46:43,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:43,509 INFO L481 AbstractCegarLoop]: Abstraction has 4200 states and 5108 transitions. [2020-10-29 07:46:43,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:46:43,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 5108 transitions. [2020-10-29 07:46:43,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-29 07:46:43,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:43,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:46:43,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:46:43,520 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:43,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:43,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1519807710, now seen corresponding path program 1 times [2020-10-29 07:46:43,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:43,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050257771] [2020-10-29 07:46:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:44,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:48,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:48,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-29 07:46:48,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:46:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 07:46:48,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:48,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:46:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 331 [2020-10-29 07:46:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:48,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:46:48,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:48,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:46:49,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:46:49,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:46:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:46:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:46:50,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-29 07:46:50,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:50,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:46:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 19 proven. 118 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:46:50,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050257771] [2020-10-29 07:46:50,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:50,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:46:50,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691855175] [2020-10-29 07:46:50,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:46:50,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:50,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:46:50,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:46:50,611 INFO L87 Difference]: Start difference. First operand 4200 states and 5108 transitions. Second operand 8 states. [2020-10-29 07:46:50,804 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:46:51,504 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 07:47:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:09,914 INFO L93 Difference]: Finished difference Result 10919 states and 14056 transitions. [2020-10-29 07:47:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 07:47:09,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 326 [2020-10-29 07:47:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:09,958 INFO L225 Difference]: With dead ends: 10919 [2020-10-29 07:47:09,958 INFO L226 Difference]: Without dead ends: 8596 [2020-10-29 07:47:09,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-29 07:47:09,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2020-10-29 07:47:10,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 6721. [2020-10-29 07:47:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6721 states. [2020-10-29 07:47:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6721 states to 6721 states and 8281 transitions. [2020-10-29 07:47:10,218 INFO L78 Accepts]: Start accepts. Automaton has 6721 states and 8281 transitions. Word has length 326 [2020-10-29 07:47:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:10,218 INFO L481 AbstractCegarLoop]: Abstraction has 6721 states and 8281 transitions. [2020-10-29 07:47:10,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:47:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6721 states and 8281 transitions. [2020-10-29 07:47:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-29 07:47:10,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:10,230 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:10,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:47:10,230 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:10,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:10,232 INFO L82 PathProgramCache]: Analyzing trace with hash -294577460, now seen corresponding path program 1 times [2020-10-29 07:47:10,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:10,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535937227] [2020-10-29 07:47:10,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-29 07:47:12,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:12,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2144 [2020-10-29 07:47:12,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:12,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:47:12,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:47:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:12,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:12,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:47:12,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:12,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:47:12,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 07:47:12,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:47:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:13,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:47:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:13,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:13,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:47:13,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 07:47:13,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:13,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:47:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:47:13,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535937227] [2020-10-29 07:47:13,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:13,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:13,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060341662] [2020-10-29 07:47:13,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:13,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:13,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:13,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:13,462 INFO L87 Difference]: Start difference. First operand 6721 states and 8281 transitions. Second operand 7 states. [2020-10-29 07:47:16,512 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:47:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:25,590 INFO L93 Difference]: Finished difference Result 15713 states and 20245 transitions. [2020-10-29 07:47:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:47:25,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-29 07:47:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:25,637 INFO L225 Difference]: With dead ends: 15713 [2020-10-29 07:47:25,638 INFO L226 Difference]: Without dead ends: 9614 [2020-10-29 07:47:25,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9614 states. [2020-10-29 07:47:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9614 to 9558. [2020-10-29 07:47:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9558 states. [2020-10-29 07:47:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9558 states to 9558 states and 11690 transitions. [2020-10-29 07:47:26,002 INFO L78 Accepts]: Start accepts. Automaton has 9558 states and 11690 transitions. Word has length 402 [2020-10-29 07:47:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:26,003 INFO L481 AbstractCegarLoop]: Abstraction has 9558 states and 11690 transitions. [2020-10-29 07:47:26,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 9558 states and 11690 transitions. [2020-10-29 07:47:26,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-29 07:47:26,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:26,015 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, 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, 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] [2020-10-29 07:47:26,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:47:26,015 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:26,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1520835775, now seen corresponding path program 1 times [2020-10-29 07:47:26,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:26,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488143349] [2020-10-29 07:47:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:26,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:29,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:31,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:31,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-29 07:47:31,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:47:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 07:47:31,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:31,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:47:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:47:31,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:31,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:31,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:31,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:31,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:31,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:47:31,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:31,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:31,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:31,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:31,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:31,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:47:31,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 07:47:31,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:31,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:47:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:47:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:31,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:31,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:31,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:47:31,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-29 07:47:31,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:31,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:47:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:31,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:47:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:31,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:31,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:47:31,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:47:31,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:31,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 07:47:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 165 proven. 84 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 07:47:32,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488143349] [2020-10-29 07:47:32,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:32,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:32,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073429039] [2020-10-29 07:47:32,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:32,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:32,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:32,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:32,188 INFO L87 Difference]: Start difference. First operand 9558 states and 11690 transitions. Second operand 7 states. [2020-10-29 07:47:45,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:45,438 INFO L93 Difference]: Finished difference Result 20428 states and 25445 transitions. [2020-10-29 07:47:45,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:47:45,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-29 07:47:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:45,487 INFO L225 Difference]: With dead ends: 20428 [2020-10-29 07:47:45,487 INFO L226 Difference]: Without dead ends: 11148 [2020-10-29 07:47:45,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:45,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11148 states. [2020-10-29 07:47:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11148 to 10211. [2020-10-29 07:47:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10211 states. [2020-10-29 07:47:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10211 states to 10211 states and 12236 transitions. [2020-10-29 07:47:45,758 INFO L78 Accepts]: Start accepts. Automaton has 10211 states and 12236 transitions. Word has length 411 [2020-10-29 07:47:45,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:45,758 INFO L481 AbstractCegarLoop]: Abstraction has 10211 states and 12236 transitions. [2020-10-29 07:47:45,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:45,758 INFO L276 IsEmpty]: Start isEmpty. Operand 10211 states and 12236 transitions. [2020-10-29 07:47:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-29 07:47:45,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:45,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:47:45,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:47:45,768 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:45,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:45,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2027043590, now seen corresponding path program 1 times [2020-10-29 07:47:45,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:45,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491222415] [2020-10-29 07:47:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:45,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:47,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:47,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-29 07:47:47,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:47,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2014 [2020-10-29 07:47:47,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:47,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:47:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:47:47,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:48,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:48,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:48,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:48,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:48,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:47:48,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:48,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:48,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:48,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:48,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:48,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:48,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:47:48,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-29 07:47:48,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:48,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:47:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:48,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:47:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:48,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:48,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:48,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 07:47:48,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:48,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:47:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:47:49,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491222415] [2020-10-29 07:47:49,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:49,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:47:49,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485733885] [2020-10-29 07:47:49,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:47:49,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:49,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:47:49,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:47:49,133 INFO L87 Difference]: Start difference. First operand 10211 states and 12236 transitions. Second operand 8 states. [2020-10-29 07:47:51,549 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:48:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:04,134 INFO L93 Difference]: Finished difference Result 22371 states and 26876 transitions. [2020-10-29 07:48:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:48:04,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 416 [2020-10-29 07:48:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:04,207 INFO L225 Difference]: With dead ends: 22371 [2020-10-29 07:48:04,207 INFO L226 Difference]: Without dead ends: 12782 [2020-10-29 07:48:04,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:48:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12782 states. [2020-10-29 07:48:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12782 to 12434. [2020-10-29 07:48:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12434 states. [2020-10-29 07:48:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12434 states to 12434 states and 14738 transitions. [2020-10-29 07:48:04,570 INFO L78 Accepts]: Start accepts. Automaton has 12434 states and 14738 transitions. Word has length 416 [2020-10-29 07:48:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:04,572 INFO L481 AbstractCegarLoop]: Abstraction has 12434 states and 14738 transitions. [2020-10-29 07:48:04,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:48:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 12434 states and 14738 transitions. [2020-10-29 07:48:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-29 07:48:04,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:04,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:48:04,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:48:04,584 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:04,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1852745742, now seen corresponding path program 1 times [2020-10-29 07:48:04,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:04,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477434395] [2020-10-29 07:48:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:04,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:05,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-29 07:48:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-10-29 07:48:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:05,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:48:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 07:48:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:05,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:05,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:05,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:05,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:48:05,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:05,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:05,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:05,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:05,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:05,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:48:05,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:05,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:48:05,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:05,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:05,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:06,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:48:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:06,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:06,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:06,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:06,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 07:48:06,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:06,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:48:06,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:48:06,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477434395] [2020-10-29 07:48:06,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:06,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:48:06,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937949942] [2020-10-29 07:48:06,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:48:06,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:06,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:48:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:48:06,349 INFO L87 Difference]: Start difference. First operand 12434 states and 14738 transitions. Second operand 5 states. [2020-10-29 07:48:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:15,547 INFO L93 Difference]: Finished difference Result 27342 states and 33486 transitions. [2020-10-29 07:48:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:48:15,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 428 [2020-10-29 07:48:15,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:15,609 INFO L225 Difference]: With dead ends: 27342 [2020-10-29 07:48:15,609 INFO L226 Difference]: Without dead ends: 15530 [2020-10-29 07:48:15,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:48:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15530 states. [2020-10-29 07:48:15,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15530 to 15528. [2020-10-29 07:48:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15528 states. [2020-10-29 07:48:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15528 states to 15528 states and 18343 transitions. [2020-10-29 07:48:15,982 INFO L78 Accepts]: Start accepts. Automaton has 15528 states and 18343 transitions. Word has length 428 [2020-10-29 07:48:15,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:15,983 INFO L481 AbstractCegarLoop]: Abstraction has 15528 states and 18343 transitions. [2020-10-29 07:48:15,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:48:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 15528 states and 18343 transitions. [2020-10-29 07:48:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2020-10-29 07:48:15,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:15,994 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, 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, 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, 1, 1] [2020-10-29 07:48:15,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:48:15,995 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:15,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:15,996 INFO L82 PathProgramCache]: Analyzing trace with hash 37650589, now seen corresponding path program 1 times [2020-10-29 07:48:15,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:15,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857602628] [2020-10-29 07:48:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:16,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:20,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-29 07:48:20,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:48:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4817 [2020-10-29 07:48:20,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:20,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:48:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:48:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:48:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:21,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:21,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:21,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:21,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:21,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:21,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:21,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:48:21,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:48:21,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:21,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:48:21,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:21,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:48:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:21,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:21,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:21,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:21,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:21,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 07:48:21,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:21,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:48:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:48:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:48:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:21,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:21,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:21,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:21,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:48:21,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:48:21,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:21,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:21,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:21,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:21,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:48:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 263 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:48:22,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857602628] [2020-10-29 07:48:22,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:22,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:48:22,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404655107] [2020-10-29 07:48:22,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:48:22,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:22,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:48:22,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:48:22,138 INFO L87 Difference]: Start difference. First operand 15528 states and 18343 transitions. Second operand 10 states. [2020-10-29 07:48:29,322 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:48:29,656 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:48:30,001 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-29 07:48:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:45,934 INFO L93 Difference]: Finished difference Result 32411 states and 39592 transitions. [2020-10-29 07:48:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 07:48:45,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 519 [2020-10-29 07:48:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:46,003 INFO L225 Difference]: With dead ends: 32411 [2020-10-29 07:48:46,003 INFO L226 Difference]: Without dead ends: 20306 [2020-10-29 07:48:46,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=306, Invalid=1254, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 07:48:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20306 states. [2020-10-29 07:48:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20306 to 20273. [2020-10-29 07:48:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20273 states. [2020-10-29 07:48:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20273 states to 20273 states and 24046 transitions. [2020-10-29 07:48:46,455 INFO L78 Accepts]: Start accepts. Automaton has 20273 states and 24046 transitions. Word has length 519 [2020-10-29 07:48:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:46,456 INFO L481 AbstractCegarLoop]: Abstraction has 20273 states and 24046 transitions. [2020-10-29 07:48:46,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:48:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 20273 states and 24046 transitions. [2020-10-29 07:48:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-29 07:48:46,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:46,470 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, 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, 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] [2020-10-29 07:48:46,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:48:46,471 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:46,474 INFO L82 PathProgramCache]: Analyzing trace with hash 73405062, now seen corresponding path program 1 times [2020-10-29 07:48:46,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:46,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356588013] [2020-10-29 07:48:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:47,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:50,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:50,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 572 [2020-10-29 07:48:50,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:48:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4288 [2020-10-29 07:48:50,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:50,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:48:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:48:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:51,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:51,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:48:51,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:51,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:48:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:48:51,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:48:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:51,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:51,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 07:48:51,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:51,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:48:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:48:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:48:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 07:48:51,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:48:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:48:51,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356588013] [2020-10-29 07:48:51,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:51,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:48:51,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880684094] [2020-10-29 07:48:51,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:51,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:51,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:51,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:51,913 INFO L87 Difference]: Start difference. First operand 20273 states and 24046 transitions. Second operand 7 states. [2020-10-29 07:49:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:06,419 INFO L93 Difference]: Finished difference Result 39764 states and 49426 transitions. [2020-10-29 07:49:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:49:06,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 556 [2020-10-29 07:49:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:06,511 INFO L225 Difference]: With dead ends: 39764 [2020-10-29 07:49:06,511 INFO L226 Difference]: Without dead ends: 22607 [2020-10-29 07:49:06,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:49:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22607 states. [2020-10-29 07:49:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22607 to 22480. [2020-10-29 07:49:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22480 states. [2020-10-29 07:49:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22480 states to 22480 states and 26416 transitions. [2020-10-29 07:49:07,061 INFO L78 Accepts]: Start accepts. Automaton has 22480 states and 26416 transitions. Word has length 556 [2020-10-29 07:49:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:07,062 INFO L481 AbstractCegarLoop]: Abstraction has 22480 states and 26416 transitions. [2020-10-29 07:49:07,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 22480 states and 26416 transitions. [2020-10-29 07:49:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2020-10-29 07:49:07,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:07,083 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:49:07,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:49:07,084 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1492460898, now seen corresponding path program 1 times [2020-10-29 07:49:07,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:07,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378770638] [2020-10-29 07:49:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY