/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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:41:58,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:41:58,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:41:58,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:41:58,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:41:58,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:41:58,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:41:58,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:41:58,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:41:58,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:41:58,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:41:58,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:41:58,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:41:58,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:41:58,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:41:58,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:41:58,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:41:58,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:41:58,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:41:58,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:41:58,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:41:58,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:41:58,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:41:58,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:41:58,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:41:58,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:41:58,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:41:58,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:41:58,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:41:58,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:41:58,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:41:58,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:41:58,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:41:58,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:41:58,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:41:58,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:41:58,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:41:58,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:41:58,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:41:58,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:41:58,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:41:58,477 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 07:41:58,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:41:58,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:41:58,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:41:58,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:41:58,537 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:41:58,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:41:58,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:41:58,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:41:58,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:41:58,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:41:58,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:41:58,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:41:58,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:41:58,539 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:41:58,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:41:58,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:41:58,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:41:58,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:41:58,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:41:58,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:41:58,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:41:58,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:41:58,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:41:58,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:41:58,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:41:58,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:41:58,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:41:58,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:41:58,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:41:58,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:41:58,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:41:59,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:41:59,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:41:59,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:41:59,030 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:41:59,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label13.c [2020-10-29 07:41:59,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/411cee83b/4ad63f47970f436b8632a0a7737ebb01/FLAGaad2dfaff [2020-10-29 07:42:00,115 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:42:00,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label13.c [2020-10-29 07:42:00,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/411cee83b/4ad63f47970f436b8632a0a7737ebb01/FLAGaad2dfaff [2020-10-29 07:42:00,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/411cee83b/4ad63f47970f436b8632a0a7737ebb01 [2020-10-29 07:42:00,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:42:00,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:42:00,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:42:00,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:42:00,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:42:00,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:42:00" (1/1) ... [2020-10-29 07:42:00,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16889bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:00, skipping insertion in model container [2020-10-29 07:42:00,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:42:00" (1/1) ... [2020-10-29 07:42:00,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:42:00,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:42:01,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:42:01,299 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:42:01,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:42:01,735 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:42:01,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01 WrapperNode [2020-10-29 07:42:01,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:42:01,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:42:01,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:42:01,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:42:01,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01" (1/1) ... [2020-10-29 07:42:01,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01" (1/1) ... [2020-10-29 07:42:01,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01" (1/1) ... [2020-10-29 07:42:01,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01" (1/1) ... [2020-10-29 07:42:01,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01" (1/1) ... [2020-10-29 07:42:01,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01" (1/1) ... [2020-10-29 07:42:01,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01" (1/1) ... [2020-10-29 07:42:02,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:42:02,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:42:02,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:42:02,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:42:02,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01" (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 07:42:02,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:42:02,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:42:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:42:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:42:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:42:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:42:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:42:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:42:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:42:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:42:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:42:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:42:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:42:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:42:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:42:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:42:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:42:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:42:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:42:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:42:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:42:05,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:42:05,605 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:42:05,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:42:05 BoogieIcfgContainer [2020-10-29 07:42:05,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:42:05,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:42:05,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:42:05,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:42:05,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:42:00" (1/3) ... [2020-10-29 07:42:05,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a52fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:42:05, skipping insertion in model container [2020-10-29 07:42:05,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:42:01" (2/3) ... [2020-10-29 07:42:05,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a52fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:42:05, skipping insertion in model container [2020-10-29 07:42:05,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:42:05" (3/3) ... [2020-10-29 07:42:05,619 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label13.c [2020-10-29 07:42:05,634 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:42:05,641 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:42:05,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:42:05,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:42:05,717 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:42:05,717 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:42:05,717 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:42:05,717 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:42:05,717 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:42:05,717 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:42:05,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:42:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:42:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 07:42:05,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:05,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:05,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1460813753, now seen corresponding path program 1 times [2020-10-29 07:42:05,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:05,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756153220] [2020-10-29 07:42:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:06,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:06,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 07:42:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-29 07:42:06,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:06,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:42:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 07:42:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:42:07,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:07,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:07,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:07,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:07,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:42:07,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:07,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:42:07,191 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 07:42:07,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756153220] [2020-10-29 07:42:07,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:42:07,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:42:07,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176838035] [2020-10-29 07:42:07,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:42:07,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:07,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:42:07,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:42:07,235 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:42:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:19,064 INFO L93 Difference]: Finished difference Result 1245 states and 2226 transitions. [2020-10-29 07:42:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:42:19,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-29 07:42:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:19,090 INFO L225 Difference]: With dead ends: 1245 [2020-10-29 07:42:19,090 INFO L226 Difference]: Without dead ends: 725 [2020-10-29 07:42:19,104 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 07:42:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-29 07:42:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 713. [2020-10-29 07:42:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-29 07:42:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1130 transitions. [2020-10-29 07:42:19,227 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1130 transitions. Word has length 55 [2020-10-29 07:42:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:19,228 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1130 transitions. [2020-10-29 07:42:19,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:42:19,231 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1130 transitions. [2020-10-29 07:42:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 07:42:19,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:19,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:19,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:42:19,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:19,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:19,246 INFO L82 PathProgramCache]: Analyzing trace with hash 517092563, now seen corresponding path program 1 times [2020-10-29 07:42:19,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:19,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729596438] [2020-10-29 07:42:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:19,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:21,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:21,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:22,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:22,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 07:42:22,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:42:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2749 [2020-10-29 07:42:22,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:22,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:42:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 07:42:22,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:42:22,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:22,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:22,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:22,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:42:22,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:22,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:22,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:22,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:42:22,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:22,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:22,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:42:22,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 07:42:22,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:22,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 07:42:22,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:42:22,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729596438] [2020-10-29 07:42:22,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:22,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:42:22,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568590801] [2020-10-29 07:42:22,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:42:22,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:22,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:42:22,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:42:22,704 INFO L87 Difference]: Start difference. First operand 713 states and 1130 transitions. Second operand 5 states. [2020-10-29 07:42:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:32,620 INFO L93 Difference]: Finished difference Result 2054 states and 3300 transitions. [2020-10-29 07:42:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:42:32,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 07:42:32,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:32,637 INFO L225 Difference]: With dead ends: 2054 [2020-10-29 07:42:32,637 INFO L226 Difference]: Without dead ends: 1347 [2020-10-29 07:42:32,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:42:32,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-10-29 07:42:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1341. [2020-10-29 07:42:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-10-29 07:42:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1865 transitions. [2020-10-29 07:42:32,746 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1865 transitions. Word has length 127 [2020-10-29 07:42:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:32,750 INFO L481 AbstractCegarLoop]: Abstraction has 1341 states and 1865 transitions. [2020-10-29 07:42:32,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:42:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1865 transitions. [2020-10-29 07:42:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 07:42:32,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:32,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:32,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:42:32,767 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:32,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:32,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1097124876, now seen corresponding path program 1 times [2020-10-29 07:42:32,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:32,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614163575] [2020-10-29 07:42:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:33,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:34,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:34,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:42:34,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:34,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-10-29 07:42:34,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:34,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:42:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:42:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:42:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:34,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:34,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:34,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:42:34,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:34,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:34,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:34,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:34,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:42:34,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:34,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 07:42:34,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:34,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:34,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:34,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:34,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:42:34,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:42:34,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614163575] [2020-10-29 07:42:34,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:42:34,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:42:34,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659960978] [2020-10-29 07:42:34,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:34,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:34,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:34,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:34,932 INFO L87 Difference]: Start difference. First operand 1341 states and 1865 transitions. Second operand 7 states. [2020-10-29 07:42:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:44,826 INFO L93 Difference]: Finished difference Result 3960 states and 5551 transitions. [2020-10-29 07:42:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:42:44,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-29 07:42:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:44,846 INFO L225 Difference]: With dead ends: 3960 [2020-10-29 07:42:44,847 INFO L226 Difference]: Without dead ends: 2625 [2020-10-29 07:42:44,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:42:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2020-10-29 07:42:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2292. [2020-10-29 07:42:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2020-10-29 07:42:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 2935 transitions. [2020-10-29 07:42:44,985 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 2935 transitions. Word has length 138 [2020-10-29 07:42:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:44,986 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 2935 transitions. [2020-10-29 07:42:44,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 2935 transitions. [2020-10-29 07:42:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 07:42:44,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:44,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:44,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:42:44,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:44,993 INFO L82 PathProgramCache]: Analyzing trace with hash -681991918, now seen corresponding path program 1 times [2020-10-29 07:42:44,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:44,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421974395] [2020-10-29 07:42:44,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:45,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:45,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:46,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 07:42:49,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:49,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3985 [2020-10-29 07:42:49,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:42:49,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:42:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:42:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:49,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:42:49,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:42:49,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-29 07:42:49,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:42:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:42:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:42:50,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421974395] [2020-10-29 07:42:50,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:42:50,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:42:50,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212607369] [2020-10-29 07:42:50,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:50,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:50,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:50,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:50,373 INFO L87 Difference]: Start difference. First operand 2292 states and 2935 transitions. Second operand 7 states. [2020-10-29 07:42:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:59,539 INFO L93 Difference]: Finished difference Result 4935 states and 6257 transitions. [2020-10-29 07:42:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:42:59,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-29 07:42:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:59,568 INFO L225 Difference]: With dead ends: 4935 [2020-10-29 07:42:59,568 INFO L226 Difference]: Without dead ends: 2649 [2020-10-29 07:42:59,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:42:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2020-10-29 07:42:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2612. [2020-10-29 07:42:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2020-10-29 07:42:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3268 transitions. [2020-10-29 07:42:59,692 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3268 transitions. Word has length 255 [2020-10-29 07:42:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:59,694 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 3268 transitions. [2020-10-29 07:42:59,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3268 transitions. [2020-10-29 07:42:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-29 07:42:59,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:59,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:59,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:42:59,704 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:59,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:59,705 INFO L82 PathProgramCache]: Analyzing trace with hash 948146515, now seen corresponding path program 1 times [2020-10-29 07:42:59,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:59,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269786937] [2020-10-29 07:42:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-29 07:43:02,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2598 [2020-10-29 07:43:02,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:43:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 344 [2020-10-29 07:43:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:43:02,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:03,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:03,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:03,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:03,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-29 07:43:03,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:03,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:43:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:43:05,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269786937] [2020-10-29 07:43:05,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:05,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:43:05,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626333103] [2020-10-29 07:43:05,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:43:05,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:05,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:43:05,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:43:05,254 INFO L87 Difference]: Start difference. First operand 2612 states and 3268 transitions. Second operand 6 states. [2020-10-29 07:43:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:13,997 INFO L93 Difference]: Finished difference Result 3272 states and 4052 transitions. [2020-10-29 07:43:14,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 07:43:14,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 341 [2020-10-29 07:43:14,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:14,025 INFO L225 Difference]: With dead ends: 3272 [2020-10-29 07:43:14,025 INFO L226 Difference]: Without dead ends: 3269 [2020-10-29 07:43:14,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2020-10-29 07:43:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3236. [2020-10-29 07:43:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3236 states. [2020-10-29 07:43:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 3998 transitions. [2020-10-29 07:43:14,143 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 3998 transitions. Word has length 341 [2020-10-29 07:43:14,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:14,144 INFO L481 AbstractCegarLoop]: Abstraction has 3236 states and 3998 transitions. [2020-10-29 07:43:14,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:43:14,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 3998 transitions. [2020-10-29 07:43:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-29 07:43:14,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:14,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:43:14,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:43:14,153 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:14,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:14,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1675157310, now seen corresponding path program 1 times [2020-10-29 07:43:14,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:14,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747258540] [2020-10-29 07:43:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:14,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:19,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:19,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-29 07:43:19,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:43:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 07:43:19,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:19,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:43:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 355 [2020-10-29 07:43:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:19,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:19,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:19,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:19,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:19,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:43:19,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:19,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:19,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:19,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:19,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:19,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:43:19,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-29 07:43:19,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:19,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:43:19,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:19,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:43:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:20,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:20,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:21,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:21,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:43:21,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-29 07:43:21,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:21,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:43:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 86 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:43:21,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747258540] [2020-10-29 07:43:21,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:21,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:21,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508644632] [2020-10-29 07:43:21,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:21,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:21,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:21,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:21,698 INFO L87 Difference]: Start difference. First operand 3236 states and 3998 transitions. Second operand 7 states. [2020-10-29 07:43:21,863 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:43:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:37,896 INFO L93 Difference]: Finished difference Result 7400 states and 9836 transitions. [2020-10-29 07:43:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:43:37,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-29 07:43:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:37,938 INFO L225 Difference]: With dead ends: 7400 [2020-10-29 07:43:37,939 INFO L226 Difference]: Without dead ends: 6041 [2020-10-29 07:43:37,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:43:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6041 states. [2020-10-29 07:43:38,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6041 to 4488. [2020-10-29 07:43:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2020-10-29 07:43:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 5651 transitions. [2020-10-29 07:43:38,112 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 5651 transitions. Word has length 350 [2020-10-29 07:43:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:38,113 INFO L481 AbstractCegarLoop]: Abstraction has 4488 states and 5651 transitions. [2020-10-29 07:43:38,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 5651 transitions. [2020-10-29 07:43:38,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-29 07:43:38,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:38,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:38,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:43:38,127 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:38,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash 281952498, now seen corresponding path program 1 times [2020-10-29 07:43:38,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:38,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272371297] [2020-10-29 07:43:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:38,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-29 07:43:41,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:43:41,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2964 [2020-10-29 07:43:41,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:43:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-29 07:43:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:41,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:41,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:41,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:41,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:41,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:41,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:41,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-29 07:43:41,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:43:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:42,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:42,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:42,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:43:42,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-29 07:43:42,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:42,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:43:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 152 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:43:42,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272371297] [2020-10-29 07:43:42,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:42,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:43:42,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984927809] [2020-10-29 07:43:42,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:43:42,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:42,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:43:42,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:43:42,608 INFO L87 Difference]: Start difference. First operand 4488 states and 5651 transitions. Second operand 6 states. [2020-10-29 07:43:53,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:53,754 INFO L93 Difference]: Finished difference Result 10883 states and 14316 transitions. [2020-10-29 07:43:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:43:53,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 451 [2020-10-29 07:43:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:53,792 INFO L225 Difference]: With dead ends: 10883 [2020-10-29 07:43:53,792 INFO L226 Difference]: Without dead ends: 6708 [2020-10-29 07:43:53,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 07:43:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2020-10-29 07:43:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6688. [2020-10-29 07:43:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6688 states. [2020-10-29 07:43:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6688 states to 6688 states and 8311 transitions. [2020-10-29 07:43:54,074 INFO L78 Accepts]: Start accepts. Automaton has 6688 states and 8311 transitions. Word has length 451 [2020-10-29 07:43:54,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:54,075 INFO L481 AbstractCegarLoop]: Abstraction has 6688 states and 8311 transitions. [2020-10-29 07:43:54,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:43:54,076 INFO L276 IsEmpty]: Start isEmpty. Operand 6688 states and 8311 transitions. [2020-10-29 07:43:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-29 07:43:54,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:54,090 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, 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, 3, 3, 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] [2020-10-29 07:43:54,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:43:54,091 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:54,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:54,091 INFO L82 PathProgramCache]: Analyzing trace with hash 547034013, now seen corresponding path program 1 times [2020-10-29 07:43:54,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:54,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361806768] [2020-10-29 07:43:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:54,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:56,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:58,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:59,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:59,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-29 07:43:59,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:43:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 07:43:59,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:59,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:43:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-29 07:43:59,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:59,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:59,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:59,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:59,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:43:59,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:59,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:59,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:59,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:59,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:43:59,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 07:43:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:59,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:43:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:43:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:59,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:00,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:00,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:44:00,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:00,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-10-29 07:44:00,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:00,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:00,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:00,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:00,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:44:00,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:00,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:44:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:00,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:00,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:44:00,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 07:44:00,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:00,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:44:00,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 325 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:44:00,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361806768] [2020-10-29 07:44:00,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:00,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:00,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809842838] [2020-10-29 07:44:00,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:00,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:00,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:00,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:00,865 INFO L87 Difference]: Start difference. First operand 6688 states and 8311 transitions. Second operand 7 states. [2020-10-29 07:44:16,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:16,696 INFO L93 Difference]: Finished difference Result 14996 states and 19631 transitions. [2020-10-29 07:44:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:44:16,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 460 [2020-10-29 07:44:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:16,746 INFO L225 Difference]: With dead ends: 14996 [2020-10-29 07:44:16,746 INFO L226 Difference]: Without dead ends: 9234 [2020-10-29 07:44:16,760 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 07:44:16,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9234 states. [2020-10-29 07:44:16,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9234 to 7984. [2020-10-29 07:44:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7984 states. [2020-10-29 07:44:17,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7984 states to 7984 states and 9915 transitions. [2020-10-29 07:44:17,003 INFO L78 Accepts]: Start accepts. Automaton has 7984 states and 9915 transitions. Word has length 460 [2020-10-29 07:44:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:17,004 INFO L481 AbstractCegarLoop]: Abstraction has 7984 states and 9915 transitions. [2020-10-29 07:44:17,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7984 states and 9915 transitions. [2020-10-29 07:44:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-29 07:44:17,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:17,014 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:17,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:44:17,014 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:17,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:17,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1004277606, now seen corresponding path program 1 times [2020-10-29 07:44:17,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:17,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400770077] [2020-10-29 07:44:17,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:17,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:21,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:21,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-10-29 07:44:21,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:44:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4421 [2020-10-29 07:44:21,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:21,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:44:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:44:21,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:21,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:21,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:21,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:21,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:44:21,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:21,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:21,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:21,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:22,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:22,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:44:22,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:22,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 07:44:22,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:22,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:44:22,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:22,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:44:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:22,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:22,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:44:22,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 07:44:22,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:22,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:44:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:44:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:22,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:22,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:44:22,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:44:22,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:22,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 07:44:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 253 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 07:44:23,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400770077] [2020-10-29 07:44:23,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:23,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:23,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496765515] [2020-10-29 07:44:23,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:23,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:23,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:23,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:23,109 INFO L87 Difference]: Start difference. First operand 7984 states and 9915 transitions. Second operand 7 states. [2020-10-29 07:44:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:37,543 INFO L93 Difference]: Finished difference Result 17952 states and 22336 transitions. [2020-10-29 07:44:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:44:37,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 522 [2020-10-29 07:44:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:37,586 INFO L225 Difference]: With dead ends: 17952 [2020-10-29 07:44:37,586 INFO L226 Difference]: Without dead ends: 10281 [2020-10-29 07:44:37,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 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 07:44:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10281 states. [2020-10-29 07:44:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10281 to 9629. [2020-10-29 07:44:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9629 states. [2020-10-29 07:44:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9629 states to 9629 states and 11754 transitions. [2020-10-29 07:44:37,892 INFO L78 Accepts]: Start accepts. Automaton has 9629 states and 11754 transitions. Word has length 522 [2020-10-29 07:44:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:37,893 INFO L481 AbstractCegarLoop]: Abstraction has 9629 states and 11754 transitions. [2020-10-29 07:44:37,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 9629 states and 11754 transitions. [2020-10-29 07:44:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-29 07:44:37,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:37,908 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:37,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:44:37,908 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:37,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:37,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1203916178, now seen corresponding path program 1 times [2020-10-29 07:44:37,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:37,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906653933] [2020-10-29 07:44:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:38,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:41,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:41,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-29 07:44:41,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:41,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3382 [2020-10-29 07:44:41,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:41,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:44:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:44:41,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:41,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:41,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:41,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:41,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:41,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:41,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:44:41,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:41,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:41,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:41,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:41,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:41,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:41,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:41,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:41,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:44:41,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 07:44:41,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:41,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:41,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:44:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:42,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:42,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:44:42,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 07:44:42,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:42,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:44:42,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:42,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:44:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:42,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:42,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:42,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:44:42,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 07:44:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:42,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:44:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:44:42,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906653933] [2020-10-29 07:44:42,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:42,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:42,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285327384] [2020-10-29 07:44:42,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:42,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:42,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:42,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:42,333 INFO L87 Difference]: Start difference. First operand 9629 states and 11754 transitions. Second operand 7 states. [2020-10-29 07:44:44,542 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:44:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:56,157 INFO L93 Difference]: Finished difference Result 21830 states and 27710 transitions. [2020-10-29 07:44:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:44:56,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2020-10-29 07:44:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:56,220 INFO L225 Difference]: With dead ends: 21830 [2020-10-29 07:44:56,220 INFO L226 Difference]: Without dead ends: 12514 [2020-10-29 07:44:56,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:44:56,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12514 states. [2020-10-29 07:44:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12514 to 11864. [2020-10-29 07:44:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11864 states. [2020-10-29 07:44:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11864 states to 11864 states and 14356 transitions. [2020-10-29 07:44:56,550 INFO L78 Accepts]: Start accepts. Automaton has 11864 states and 14356 transitions. Word has length 534 [2020-10-29 07:44:56,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:56,551 INFO L481 AbstractCegarLoop]: Abstraction has 11864 states and 14356 transitions. [2020-10-29 07:44:56,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 11864 states and 14356 transitions. [2020-10-29 07:44:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-10-29 07:44:56,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:56,567 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:56,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:44:56,568 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:56,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:56,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1343678577, now seen corresponding path program 1 times [2020-10-29 07:44:56,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:56,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577932267] [2020-10-29 07:44:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-10-29 07:44:59,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2640 [2020-10-29 07:44:59,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:44:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:44:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:59,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:59,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:44:59,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:59,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:44:59,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 07:44:59,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:59,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:44:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:45:00,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 07:45:00,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:45:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:45:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:45:00,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 07:45:00,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:45:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:45:00,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577932267] [2020-10-29 07:45:00,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:00,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:00,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598621114] [2020-10-29 07:45:00,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:00,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:00,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:00,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:00,656 INFO L87 Difference]: Start difference. First operand 11864 states and 14356 transitions. Second operand 7 states. [2020-10-29 07:45:17,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:17,918 INFO L93 Difference]: Finished difference Result 24352 states and 31057 transitions. [2020-10-29 07:45:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:45:17,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 606 [2020-10-29 07:45:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:17,972 INFO L225 Difference]: With dead ends: 24352 [2020-10-29 07:45:17,972 INFO L226 Difference]: Without dead ends: 15602 [2020-10-29 07:45:17,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 07:45:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15602 states. [2020-10-29 07:45:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15602 to 14356. [2020-10-29 07:45:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14356 states. [2020-10-29 07:45:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14356 states to 14356 states and 17835 transitions. [2020-10-29 07:45:18,321 INFO L78 Accepts]: Start accepts. Automaton has 14356 states and 17835 transitions. Word has length 606 [2020-10-29 07:45:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:18,321 INFO L481 AbstractCegarLoop]: Abstraction has 14356 states and 17835 transitions. [2020-10-29 07:45:18,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:18,322 INFO L276 IsEmpty]: Start isEmpty. Operand 14356 states and 17835 transitions. [2020-10-29 07:45:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2020-10-29 07:45:18,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:18,337 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, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:18,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:45:18,337 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:18,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1003742217, now seen corresponding path program 1 times [2020-10-29 07:45:18,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:18,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994028570] [2020-10-29 07:45:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:22,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 644 [2020-10-29 07:45:23,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:45:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 07:45:23,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:45:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:45:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:23,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:23,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:23,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:23,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:45:23,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:23,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:23,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:45:23,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:45:23,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:23,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:45:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:24,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:24,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:45:24,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:24,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:45:24,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:24,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:24,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:24,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:24,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:45:24,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:45:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:24,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:24,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:45:24,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 07:45:24,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:24,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:45:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-29 07:45:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:24,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:24,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:24,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:45:24,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:24,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:45:24,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:24,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:45:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:24,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 377 proven. 82 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-29 07:45:24,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994028570] [2020-10-29 07:45:24,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:24,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:24,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445037912] [2020-10-29 07:45:24,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:24,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:24,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:24,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:24,529 INFO L87 Difference]: Start difference. First operand 14356 states and 17835 transitions. Second operand 7 states. [2020-10-29 07:45:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:42,918 INFO L93 Difference]: Finished difference Result 32274 states and 41578 transitions. [2020-10-29 07:45:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:45:42,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 626 [2020-10-29 07:45:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:42,994 INFO L225 Difference]: With dead ends: 32274 [2020-10-29 07:45:42,994 INFO L226 Difference]: Without dead ends: 21032 [2020-10-29 07:45:43,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:45:43,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21032 states. [2020-10-29 07:45:43,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21032 to 20402. [2020-10-29 07:45:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20402 states. [2020-10-29 07:45:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20402 states to 20402 states and 25375 transitions. [2020-10-29 07:45:43,520 INFO L78 Accepts]: Start accepts. Automaton has 20402 states and 25375 transitions. Word has length 626 [2020-10-29 07:45:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:43,521 INFO L481 AbstractCegarLoop]: Abstraction has 20402 states and 25375 transitions. [2020-10-29 07:45:43,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 20402 states and 25375 transitions. [2020-10-29 07:45:43,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-29 07:45:43,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:43,536 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, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:43,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:45:43,536 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:43,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:43,537 INFO L82 PathProgramCache]: Analyzing trace with hash 8469020, now seen corresponding path program 1 times [2020-10-29 07:45:43,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:43,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240862590] [2020-10-29 07:45:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY