/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:21:55,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:21:55,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:21:55,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:21:55,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:21:55,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:21:55,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:21:55,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:21:55,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:21:55,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:21:55,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:21:55,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:21:55,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:21:55,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:21:55,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:21:55,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:21:55,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:21:55,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:21:55,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:21:55,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:21:55,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:21:55,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:21:55,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:21:55,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:21:55,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:21:55,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:21:55,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:21:55,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:21:55,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:21:55,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:21:55,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:21:55,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:21:55,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:21:55,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:21:55,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:21:55,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:21:55,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:21:55,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:21:55,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:21:55,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:21:55,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:21:55,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:21:55,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:21:55,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:21:55,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:21:55,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:21:55,647 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:21:55,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:21:55,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:21:55,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:21:55,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:21:55,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:21:55,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:21:55,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:21:55,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:21:55,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:21:55,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:21:55,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:21:55,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:21:55,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:21:55,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:21:55,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:21:55,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:21:55,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:21:55,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:21:55,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:21:55,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:21:55,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:21:55,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:21:55,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:21:55,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:21:55,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:21:56,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:21:56,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:21:56,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:21:56,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:21:56,058 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:21:56,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30.c [2020-10-28 13:21:56,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85b570ca3/39ec2cfb50f646e4b59d4a875c614a38/FLAGdcd10490b [2020-10-28 13:21:57,004 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:21:57,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label30.c [2020-10-28 13:21:57,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85b570ca3/39ec2cfb50f646e4b59d4a875c614a38/FLAGdcd10490b [2020-10-28 13:21:57,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85b570ca3/39ec2cfb50f646e4b59d4a875c614a38 [2020-10-28 13:21:57,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:21:57,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:21:57,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:57,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:21:57,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:21:57,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:57" (1/1) ... [2020-10-28 13:21:57,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7954a7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:57, skipping insertion in model container [2020-10-28 13:21:57,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:57" (1/1) ... [2020-10-28 13:21:57,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:21:57,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:21:58,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:58,099 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:21:58,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:58,363 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:21:58,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58 WrapperNode [2020-10-28 13:21:58,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:58,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:21:58,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:21:58,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:21:58,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:21:58,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:21:58,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:21:58,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:21:58,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:21:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:21:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:21:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:21:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:21:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:21:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:21:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:21:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:21:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:21:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:21:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:21:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:21:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:21:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:21:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:21:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:21:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:21:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:21:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:21:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:21:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:22:01,332 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:22:01,332 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:22:01,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:22:01 BoogieIcfgContainer [2020-10-28 13:22:01,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:22:01,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:22:01,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:22:01,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:22:01,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:21:57" (1/3) ... [2020-10-28 13:22:01,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c37a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:22:01, skipping insertion in model container [2020-10-28 13:22:01,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (2/3) ... [2020-10-28 13:22:01,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c37a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:22:01, skipping insertion in model container [2020-10-28 13:22:01,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:22:01" (3/3) ... [2020-10-28 13:22:01,345 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label30.c [2020-10-28 13:22:01,359 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:22:01,365 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:22:01,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:22:01,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:22:01,413 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:22:01,413 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:22:01,413 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:22:01,413 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:22:01,414 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:22:01,414 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:22:01,414 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:22:01,443 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:22:01,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 13:22:01,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:01,451 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] [2020-10-28 13:22:01,451 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:01,458 INFO L82 PathProgramCache]: Analyzing trace with hash 392533356, now seen corresponding path program 1 times [2020-10-28 13:22:01,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:01,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484061793] [2020-10-28 13:22:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:01,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:02,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:02,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 13:22:02,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:02,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-28 13:22:02,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:02,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:22:02,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:22:02,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:02,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:02,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:02,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:22:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:02,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:22:02,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484061793] [2020-10-28 13:22:02,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:02,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:22:02,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461122912] [2020-10-28 13:22:02,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:22:02,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:02,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:22:02,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:22:02,451 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:22:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:07,069 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:22:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:22:07,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 13:22:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:07,093 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:22:07,093 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:22:07,105 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 [2020-10-28 13:22:07,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:22:07,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:22:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:22:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:22:07,286 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 22 [2020-10-28 13:22:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:07,286 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:22:07,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:22:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:22:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 13:22:07,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:07,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:07,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:22:07,293 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:07,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1032836852, now seen corresponding path program 1 times [2020-10-28 13:22:07,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:07,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302464020] [2020-10-28 13:22:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:08,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:22:08,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1254 [2020-10-28 13:22:08,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:08,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:22:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:08,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:08,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:08,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:08,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:22:08,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:08,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:08,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:09,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:09,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:22:09,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:09,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 13:22:09,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:09,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:22:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:22:09,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302464020] [2020-10-28 13:22:09,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:09,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:22:09,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060841252] [2020-10-28 13:22:09,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:09,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:09,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:09,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:09,195 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:22:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:14,475 INFO L93 Difference]: Finished difference Result 2081 states and 3078 transitions. [2020-10-28 13:22:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:14,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-28 13:22:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:14,485 INFO L225 Difference]: With dead ends: 2081 [2020-10-28 13:22:14,486 INFO L226 Difference]: Without dead ends: 1394 [2020-10-28 13:22:14,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:22:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-28 13:22:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1386. [2020-10-28 13:22:14,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2020-10-28 13:22:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1822 transitions. [2020-10-28 13:22:14,554 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1822 transitions. Word has length 98 [2020-10-28 13:22:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:14,555 INFO L481 AbstractCegarLoop]: Abstraction has 1386 states and 1822 transitions. [2020-10-28 13:22:14,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1822 transitions. [2020-10-28 13:22:14,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 13:22:14,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:14,561 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:14,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:22:14,561 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash 627225690, now seen corresponding path program 1 times [2020-10-28 13:22:14,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:14,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69830188] [2020-10-28 13:22:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:14,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:15,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:15,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:18,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:18,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 13:22:18,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:22:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4317 [2020-10-28 13:22:18,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:18,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:22:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:19,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:22:19,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:19,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:22:19,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:19,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:22:19,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-28 13:22:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:22:19,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:22:19,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69830188] [2020-10-28 13:22:19,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:19,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:19,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174552535] [2020-10-28 13:22:19,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:19,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:19,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:19,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:19,694 INFO L87 Difference]: Start difference. First operand 1386 states and 1822 transitions. Second operand 7 states. [2020-10-28 13:22:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:25,651 INFO L93 Difference]: Finished difference Result 3532 states and 4820 transitions. [2020-10-28 13:22:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:22:25,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-28 13:22:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:25,674 INFO L225 Difference]: With dead ends: 3532 [2020-10-28 13:22:25,674 INFO L226 Difference]: Without dead ends: 2152 [2020-10-28 13:22:25,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:22:25,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2020-10-28 13:22:25,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2112. [2020-10-28 13:22:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-10-28 13:22:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2662 transitions. [2020-10-28 13:22:25,792 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2662 transitions. Word has length 185 [2020-10-28 13:22:25,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:25,793 INFO L481 AbstractCegarLoop]: Abstraction has 2112 states and 2662 transitions. [2020-10-28 13:22:25,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2662 transitions. [2020-10-28 13:22:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 13:22:25,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:25,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:25,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:22:25,802 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:25,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:25,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1191424586, now seen corresponding path program 1 times [2020-10-28 13:22:25,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:25,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984511062] [2020-10-28 13:22:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:25,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:29,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:29,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 13:22:29,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:22:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3914 [2020-10-28 13:22:29,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:29,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:22:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:22:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:29,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:29,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:29,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:29,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:29,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:22:29,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:29,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:29,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:30,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:30,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:22:30,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:22:30,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:30,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:30,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:30,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:30,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:22:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:22:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:30,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:30,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:30,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:30,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:30,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 13:22:30,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:30,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:22:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:22:30,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984511062] [2020-10-28 13:22:30,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:30,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:30,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931314134] [2020-10-28 13:22:30,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:30,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:30,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:30,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:30,541 INFO L87 Difference]: Start difference. First operand 2112 states and 2662 transitions. Second operand 7 states. [2020-10-28 13:22:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:36,939 INFO L93 Difference]: Finished difference Result 5294 states and 6906 transitions. [2020-10-28 13:22:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:22:36,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-28 13:22:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:36,965 INFO L225 Difference]: With dead ends: 5294 [2020-10-28 13:22:36,966 INFO L226 Difference]: Without dead ends: 3188 [2020-10-28 13:22:36,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:22:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2020-10-28 13:22:37,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 3151. [2020-10-28 13:22:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3151 states. [2020-10-28 13:22:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 3769 transitions. [2020-10-28 13:22:37,075 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 3769 transitions. Word has length 251 [2020-10-28 13:22:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:37,076 INFO L481 AbstractCegarLoop]: Abstraction has 3151 states and 3769 transitions. [2020-10-28 13:22:37,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 3769 transitions. [2020-10-28 13:22:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-28 13:22:37,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:37,083 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:22:37,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:22:37,083 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:37,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:37,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1800991798, now seen corresponding path program 1 times [2020-10-28 13:22:37,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:37,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529407867] [2020-10-28 13:22:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:39,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:41,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:41,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-28 13:22:41,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:22:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4011 [2020-10-28 13:22:41,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:41,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:22:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:22:41,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:41,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:41,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:22:41,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:41,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:41,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:41,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:41,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:22:41,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-28 13:22:41,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:41,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:22:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:22:42,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529407867] [2020-10-28 13:22:42,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:42,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:22:42,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655062939] [2020-10-28 13:22:42,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:42,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:42,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:42,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:42,444 INFO L87 Difference]: Start difference. First operand 3151 states and 3769 transitions. Second operand 7 states. [2020-10-28 13:22:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:48,075 INFO L93 Difference]: Finished difference Result 6343 states and 7610 transitions. [2020-10-28 13:22:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:22:48,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-28 13:22:48,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:48,094 INFO L225 Difference]: With dead ends: 6343 [2020-10-28 13:22:48,095 INFO L226 Difference]: Without dead ends: 3198 [2020-10-28 13:22:48,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:22:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2020-10-28 13:22:48,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3168. [2020-10-28 13:22:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2020-10-28 13:22:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 3785 transitions. [2020-10-28 13:22:48,200 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 3785 transitions. Word has length 271 [2020-10-28 13:22:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:48,201 INFO L481 AbstractCegarLoop]: Abstraction has 3168 states and 3785 transitions. [2020-10-28 13:22:48,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 3785 transitions. [2020-10-28 13:22:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-28 13:22:48,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:48,208 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:22:48,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:22:48,209 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:48,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1167307920, now seen corresponding path program 1 times [2020-10-28 13:22:48,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:48,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284107165] [2020-10-28 13:22:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:49,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:53,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:53,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:22:53,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:22:53,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 13:22:53,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:53,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 13:22:53,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:53,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:53,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:53,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:53,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:22:53,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:53,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:53,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:53,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:53,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:53,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:53,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:53,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:22:53,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:53,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:53,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:53,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:53,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:53,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:22:53,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:53,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:22:53,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:53,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:22:53,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:53,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 13:22:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:53,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:53,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:22:53,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:53,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 13:22:53,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:53,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:53,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:53,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:53,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:22:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 210 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:22:54,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284107165] [2020-10-28 13:22:54,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:54,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:54,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44280400] [2020-10-28 13:22:54,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:54,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:54,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:54,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:54,191 INFO L87 Difference]: Start difference. First operand 3168 states and 3785 transitions. Second operand 7 states. [2020-10-28 13:22:59,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:59,881 INFO L93 Difference]: Finished difference Result 7756 states and 9648 transitions. [2020-10-28 13:22:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:59,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-28 13:22:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:59,904 INFO L225 Difference]: With dead ends: 7756 [2020-10-28 13:22:59,904 INFO L226 Difference]: Without dead ends: 3520 [2020-10-28 13:22:59,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:22:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2020-10-28 13:23:00,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 3473. [2020-10-28 13:23:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3473 states. [2020-10-28 13:23:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 3781 transitions. [2020-10-28 13:23:00,029 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 3781 transitions. Word has length 294 [2020-10-28 13:23:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:00,030 INFO L481 AbstractCegarLoop]: Abstraction has 3473 states and 3781 transitions. [2020-10-28 13:23:00,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 3781 transitions. [2020-10-28 13:23:00,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 13:23:00,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:00,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:23:00,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:23:00,038 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:00,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:00,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1083533216, now seen corresponding path program 1 times [2020-10-28 13:23:00,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:00,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549561966] [2020-10-28 13:23:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:00,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:04,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:04,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 13:23:04,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:04,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4284 [2020-10-28 13:23:04,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:04,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-28 13:23:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:23:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:04,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:04,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:04,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:04,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:23:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:04,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:23:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:04,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:04,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:23:04,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:04,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 13:23:04,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:04,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:23:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:23:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-28 13:23:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:05,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:05,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:23:05,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:05,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-28 13:23:05,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:05,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:23:05,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:23:05,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549561966] [2020-10-28 13:23:05,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:05,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:23:05,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604374145] [2020-10-28 13:23:05,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:23:05,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:05,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:23:05,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:23:05,496 INFO L87 Difference]: Start difference. First operand 3473 states and 3781 transitions. Second operand 8 states. [2020-10-28 13:23:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:10,723 INFO L93 Difference]: Finished difference Result 9688 states and 10860 transitions. [2020-10-28 13:23:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:23:10,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 342 [2020-10-28 13:23:10,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:10,756 INFO L225 Difference]: With dead ends: 9688 [2020-10-28 13:23:10,756 INFO L226 Difference]: Without dead ends: 6221 [2020-10-28 13:23:10,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:23:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2020-10-28 13:23:10,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 6211. [2020-10-28 13:23:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-10-28 13:23:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 6978 transitions. [2020-10-28 13:23:10,947 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 6978 transitions. Word has length 342 [2020-10-28 13:23:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:10,948 INFO L481 AbstractCegarLoop]: Abstraction has 6211 states and 6978 transitions. [2020-10-28 13:23:10,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:23:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 6978 transitions. [2020-10-28 13:23:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-28 13:23:10,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:10,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:10,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:23:10,960 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:10,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1159793292, now seen corresponding path program 1 times [2020-10-28 13:23:10,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:10,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414327104] [2020-10-28 13:23:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:11,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:16,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:16,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-28 13:23:16,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:16,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 13:23:16,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:16,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-28 13:23:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:23:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:16,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:16,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:16,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:16,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:23:16,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:16,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:16,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:16,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:16,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:23:16,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:16,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:23:16,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:16,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:16,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:16,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:16,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:23:16,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-28 13:23:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:16,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:16,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:23:16,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-28 13:23:16,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:16,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:23:16,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:23:17,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414327104] [2020-10-28 13:23:17,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:17,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:17,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265163133] [2020-10-28 13:23:17,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:17,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:17,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:17,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:17,372 INFO L87 Difference]: Start difference. First operand 6211 states and 6978 transitions. Second operand 7 states. [2020-10-28 13:23:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:22,095 INFO L93 Difference]: Finished difference Result 14133 states and 15920 transitions. [2020-10-28 13:23:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:23:22,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 428 [2020-10-28 13:23:22,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:22,139 INFO L225 Difference]: With dead ends: 14133 [2020-10-28 13:23:22,139 INFO L226 Difference]: Without dead ends: 7928 [2020-10-28 13:23:22,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:23:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7928 states. [2020-10-28 13:23:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7928 to 7918. [2020-10-28 13:23:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7918 states. [2020-10-28 13:23:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7918 states to 7918 states and 8809 transitions. [2020-10-28 13:23:22,366 INFO L78 Accepts]: Start accepts. Automaton has 7918 states and 8809 transitions. Word has length 428 [2020-10-28 13:23:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:22,367 INFO L481 AbstractCegarLoop]: Abstraction has 7918 states and 8809 transitions. [2020-10-28 13:23:22,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7918 states and 8809 transitions. [2020-10-28 13:23:22,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-28 13:23:22,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:22,382 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:23:22,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:23:22,382 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:22,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:22,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1358690286, now seen corresponding path program 1 times [2020-10-28 13:23:22,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:22,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273662892] [2020-10-28 13:23:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:22,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:23,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:27,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:27,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-28 13:23:27,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:23:27,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:27,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:27,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:23:27,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:23:27,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:23:27,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:23:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:27,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:27,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:27,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:23:27,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:27,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:23:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:27,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:27,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:23:27,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:23:27,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:27,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 13:23:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:23:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:23:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:27,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:27,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:27,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:23:27,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:27,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-28 13:23:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:27,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-28 13:23:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:28,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:28,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:28,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:28,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:23:28,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:28,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:23:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-28 13:23:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:28,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:23:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:23:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:28,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:23:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 56 proven. 255 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2020-10-28 13:23:28,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273662892] [2020-10-28 13:23:28,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:28,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:28,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052187171] [2020-10-28 13:23:28,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:28,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:28,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:28,265 INFO L87 Difference]: Start difference. First operand 7918 states and 8809 transitions. Second operand 7 states. [2020-10-28 13:23:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:32,243 INFO L93 Difference]: Finished difference Result 20950 states and 23767 transitions. [2020-10-28 13:23:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:23:32,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 483 [2020-10-28 13:23:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:32,297 INFO L225 Difference]: With dead ends: 20950 [2020-10-28 13:23:32,298 INFO L226 Difference]: Without dead ends: 13375 [2020-10-28 13:23:32,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:32,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13375 states. [2020-10-28 13:23:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13375 to 13034. [2020-10-28 13:23:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13034 states. [2020-10-28 13:23:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13034 states to 13034 states and 14717 transitions. [2020-10-28 13:23:32,604 INFO L78 Accepts]: Start accepts. Automaton has 13034 states and 14717 transitions. Word has length 483 [2020-10-28 13:23:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:32,604 INFO L481 AbstractCegarLoop]: Abstraction has 13034 states and 14717 transitions. [2020-10-28 13:23:32,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 13034 states and 14717 transitions. [2020-10-28 13:23:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-28 13:23:32,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:32,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:23:32,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:23:32,618 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:32,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:32,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1711624488, now seen corresponding path program 1 times [2020-10-28 13:23:32,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:32,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493137501] [2020-10-28 13:23:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:35,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:35,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-28 13:23:35,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3263 [2020-10-28 13:23:35,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:35,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:23:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:23:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:36,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:36,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:36,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:36,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:36,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:23:36,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:36,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:36,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:36,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:23:36,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:36,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:23:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:36,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:36,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:36,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:36,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:23:36,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:36,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-28 13:23:36,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:36,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:36,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:36,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:36,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:23:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:23:37,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493137501] [2020-10-28 13:23:37,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:37,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:37,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970947098] [2020-10-28 13:23:37,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:37,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:37,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:37,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:37,306 INFO L87 Difference]: Start difference. First operand 13034 states and 14717 transitions. Second operand 7 states. [2020-10-28 13:23:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:41,617 INFO L93 Difference]: Finished difference Result 29793 states and 34107 transitions. [2020-10-28 13:23:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:23:41,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 510 [2020-10-28 13:23:41,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:41,686 INFO L225 Difference]: With dead ends: 29793 [2020-10-28 13:23:41,686 INFO L226 Difference]: Without dead ends: 17102 [2020-10-28 13:23:41,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:23:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17102 states. [2020-10-28 13:23:42,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17102 to 17098. [2020-10-28 13:23:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17098 states. [2020-10-28 13:23:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17098 states to 17098 states and 19216 transitions. [2020-10-28 13:23:42,088 INFO L78 Accepts]: Start accepts. Automaton has 17098 states and 19216 transitions. Word has length 510 [2020-10-28 13:23:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:42,089 INFO L481 AbstractCegarLoop]: Abstraction has 17098 states and 19216 transitions. [2020-10-28 13:23:42,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 17098 states and 19216 transitions. [2020-10-28 13:23:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2020-10-28 13:23:42,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:42,100 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:42,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:23:42,100 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:42,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:42,101 INFO L82 PathProgramCache]: Analyzing trace with hash -120594176, now seen corresponding path program 1 times [2020-10-28 13:23:42,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:42,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989912808] [2020-10-28 13:23:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:42,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:43,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:47,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:47,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 640 [2020-10-28 13:23:47,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-28 13:23:47,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:47,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:23:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:23:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:47,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:47,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:47,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:47,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:23:47,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:47,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:47,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:47,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:47,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:47,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:47,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:47,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:23:47,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:47,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:23:47,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:47,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:47,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:47,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:47,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:23:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:23:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:23:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:23:48,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:23:48,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:23:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 223 proven. 195 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-28 13:23:48,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989912808] [2020-10-28 13:23:48,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:48,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:48,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637686500] [2020-10-28 13:23:48,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:48,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:48,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:48,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:48,851 INFO L87 Difference]: Start difference. First operand 17098 states and 19216 transitions. Second operand 7 states. [2020-10-28 13:23:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:53,594 INFO L93 Difference]: Finished difference Result 34533 states and 38920 transitions. [2020-10-28 13:23:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:23:53,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 622 [2020-10-28 13:23:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:53,652 INFO L225 Difference]: With dead ends: 34533 [2020-10-28 13:23:53,653 INFO L226 Difference]: Without dead ends: 17778 [2020-10-28 13:23:53,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:53,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17778 states. [2020-10-28 13:23:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17778 to 17100. [2020-10-28 13:23:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17100 states. [2020-10-28 13:23:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17100 states to 17100 states and 19083 transitions. [2020-10-28 13:23:54,035 INFO L78 Accepts]: Start accepts. Automaton has 17100 states and 19083 transitions. Word has length 622 [2020-10-28 13:23:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:54,036 INFO L481 AbstractCegarLoop]: Abstraction has 17100 states and 19083 transitions. [2020-10-28 13:23:54,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 17100 states and 19083 transitions. [2020-10-28 13:23:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2020-10-28 13:23:54,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:54,047 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:54,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:23:54,048 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:54,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1790550594, now seen corresponding path program 1 times [2020-10-28 13:23:54,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:54,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693993789] [2020-10-28 13:23:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:56,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-28 13:23:56,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:23:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2076 [2020-10-28 13:23:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:56,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:23:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:23:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,622 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:23:56,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:56,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:56,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:56,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:56,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:56,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:56,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:23:56,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:56,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:57,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:23:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:23:57,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:57,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:23:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:23:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:57,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:57,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:23:57,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:23:57,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:57,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:23:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-28 13:23:57,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693993789] [2020-10-28 13:23:57,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:57,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:57,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205778479] [2020-10-28 13:23:57,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:57,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:57,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:57,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:57,543 INFO L87 Difference]: Start difference. First operand 17100 states and 19083 transitions. Second operand 7 states. [2020-10-28 13:24:03,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:03,670 INFO L93 Difference]: Finished difference Result 36574 states and 40864 transitions. [2020-10-28 13:24:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:24:03,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 647 [2020-10-28 13:24:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:03,732 INFO L225 Difference]: With dead ends: 36574 [2020-10-28 13:24:03,732 INFO L226 Difference]: Without dead ends: 19817 [2020-10-28 13:24:03,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:24:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19817 states. [2020-10-28 13:24:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19817 to 19817. [2020-10-28 13:24:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19817 states. [2020-10-28 13:24:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19817 states to 19817 states and 21991 transitions. [2020-10-28 13:24:04,125 INFO L78 Accepts]: Start accepts. Automaton has 19817 states and 21991 transitions. Word has length 647 [2020-10-28 13:24:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:04,126 INFO L481 AbstractCegarLoop]: Abstraction has 19817 states and 21991 transitions. [2020-10-28 13:24:04,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:04,126 INFO L276 IsEmpty]: Start isEmpty. Operand 19817 states and 21991 transitions. [2020-10-28 13:24:04,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-10-28 13:24:04,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:04,141 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:24:04,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:24:04,142 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:04,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:04,142 INFO L82 PathProgramCache]: Analyzing trace with hash -356964218, now seen corresponding path program 1 times [2020-10-28 13:24:04,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:04,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675367016] [2020-10-28 13:24:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:04,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:04,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 665 [2020-10-28 13:24:04,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-28 13:24:04,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:04,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:24:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 13:24:04,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:05,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:05,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:05,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:05,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:05,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:05,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:05,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:05,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:05,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:05,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:05,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:24:05,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:05,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:05,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:05,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:05,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:24:05,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:24:05,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:05,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:05,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:24:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:05,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:05,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:05,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:24:05,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:24:05,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:05,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:24:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2020-10-28 13:24:05,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675367016] [2020-10-28 13:24:05,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:05,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:24:05,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831669900] [2020-10-28 13:24:05,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:24:05,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:05,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:24:05,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:24:05,842 INFO L87 Difference]: Start difference. First operand 19817 states and 21991 transitions. Second operand 6 states. [2020-10-28 13:24:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:10,974 INFO L93 Difference]: Finished difference Result 39961 states and 44558 transitions. [2020-10-28 13:24:10,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:24:10,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 649 [2020-10-28 13:24:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:11,033 INFO L225 Difference]: With dead ends: 39961 [2020-10-28 13:24:11,033 INFO L226 Difference]: Without dead ends: 20828 [2020-10-28 13:24:11,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:24:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20828 states. [2020-10-28 13:24:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20828 to 20828. [2020-10-28 13:24:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20828 states. [2020-10-28 13:24:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20828 states to 20828 states and 23095 transitions. [2020-10-28 13:24:11,456 INFO L78 Accepts]: Start accepts. Automaton has 20828 states and 23095 transitions. Word has length 649 [2020-10-28 13:24:11,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:11,457 INFO L481 AbstractCegarLoop]: Abstraction has 20828 states and 23095 transitions. [2020-10-28 13:24:11,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:24:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 20828 states and 23095 transitions. [2020-10-28 13:24:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2020-10-28 13:24:11,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:11,470 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:24:11,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:24:11,471 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:11,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:11,472 INFO L82 PathProgramCache]: Analyzing trace with hash -876185130, now seen corresponding path program 1 times [2020-10-28 13:24:11,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:11,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581923262] [2020-10-28 13:24:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:11,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:14,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:14,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 749 [2020-10-28 13:24:14,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:24:14,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2442 [2020-10-28 13:24:14,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:14,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:24:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:24:14,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:14,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:14,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:14,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:14,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:24:14,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:14,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:14,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:14,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:14,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:14,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:24:14,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:14,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:14,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:14,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:14,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:14,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:24:14,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:14,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:24:14,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:14,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:24:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:14,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:24:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:14,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:14,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:24:14,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:14,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 13:24:14,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:14,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:24:14,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 503 proven. 2 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-28 13:24:16,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581923262] [2020-10-28 13:24:16,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:16,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:16,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118379051] [2020-10-28 13:24:16,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:16,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:16,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:16,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:16,371 INFO L87 Difference]: Start difference. First operand 20828 states and 23095 transitions. Second operand 7 states. [2020-10-28 13:24:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:20,917 INFO L93 Difference]: Finished difference Result 41311 states and 45854 transitions. [2020-10-28 13:24:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:24:20,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 733 [2020-10-28 13:24:20,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:20,969 INFO L225 Difference]: With dead ends: 41311 [2020-10-28 13:24:20,969 INFO L226 Difference]: Without dead ends: 21167 [2020-10-28 13:24:20,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:24:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21167 states. [2020-10-28 13:24:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21167 to 21167. [2020-10-28 13:24:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21167 states. [2020-10-28 13:24:21,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21167 states to 21167 states and 23445 transitions. [2020-10-28 13:24:21,346 INFO L78 Accepts]: Start accepts. Automaton has 21167 states and 23445 transitions. Word has length 733 [2020-10-28 13:24:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:21,347 INFO L481 AbstractCegarLoop]: Abstraction has 21167 states and 23445 transitions. [2020-10-28 13:24:21,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21167 states and 23445 transitions. [2020-10-28 13:24:21,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2020-10-28 13:24:21,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:21,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:24:21,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:24:21,361 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:21,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:21,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1231951130, now seen corresponding path program 1 times [2020-10-28 13:24:21,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:21,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22102044] [2020-10-28 13:24:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:21,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:24,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:24,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 751 [2020-10-28 13:24:24,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:24:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2561 [2020-10-28 13:24:24,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:24,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-28 13:24:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:24:24,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:24,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:24,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:24,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:24,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:24,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:24,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:24,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:24,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:24,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:24,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:24:24,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:24:24,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:24,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:24:24,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:24,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:24:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:24,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:24,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:24:24,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-28 13:24:24,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:24,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:24:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 505 proven. 2 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-28 13:24:25,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22102044] [2020-10-28 13:24:25,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:25,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:25,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851730455] [2020-10-28 13:24:25,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:25,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:25,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:25,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:25,456 INFO L87 Difference]: Start difference. First operand 21167 states and 23445 transitions. Second operand 7 states. [2020-10-28 13:24:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:31,756 INFO L93 Difference]: Finished difference Result 41658 states and 46194 transitions. [2020-10-28 13:24:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:24:31,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 735 [2020-10-28 13:24:31,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:31,809 INFO L225 Difference]: With dead ends: 41658 [2020-10-28 13:24:31,809 INFO L226 Difference]: Without dead ends: 21175 [2020-10-28 13:24:31,839 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 [2020-10-28 13:24:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21175 states. [2020-10-28 13:24:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21175 to 20497. [2020-10-28 13:24:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20497 states. [2020-10-28 13:24:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20497 states to 20497 states and 22222 transitions. [2020-10-28 13:24:32,196 INFO L78 Accepts]: Start accepts. Automaton has 20497 states and 22222 transitions. Word has length 735 [2020-10-28 13:24:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:32,197 INFO L481 AbstractCegarLoop]: Abstraction has 20497 states and 22222 transitions. [2020-10-28 13:24:32,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 20497 states and 22222 transitions. [2020-10-28 13:24:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2020-10-28 13:24:32,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:32,215 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:24:32,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:24:32,215 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:32,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1748202940, now seen corresponding path program 1 times [2020-10-28 13:24:32,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:32,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397867040] [2020-10-28 13:24:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:32,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:35,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:35,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 798 [2020-10-28 13:24:35,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:24:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2608 [2020-10-28 13:24:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:35,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 523 [2020-10-28 13:24:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:24:35,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:35,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:35,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:35,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:35,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:35,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:35,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:35,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:35,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:35,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:24:35,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:24:35,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:35,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:35,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:24:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:35,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:35,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:24:35,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:35,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:24:35,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:35,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:35,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:24:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:35,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:35,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:35,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:24:35,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:35,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:24:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:24:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:35,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:35,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:24:35,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:35,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 13:24:35,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:35,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:24:35,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 566 proven. 2 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2020-10-28 13:24:37,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397867040] [2020-10-28 13:24:37,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:37,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:37,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837455590] [2020-10-28 13:24:37,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:37,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:37,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:37,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:37,327 INFO L87 Difference]: Start difference. First operand 20497 states and 22222 transitions. Second operand 7 states. [2020-10-28 13:24:42,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:42,173 INFO L93 Difference]: Finished difference Result 40309 states and 43755 transitions. [2020-10-28 13:24:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:24:42,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 780 [2020-10-28 13:24:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:42,220 INFO L225 Difference]: With dead ends: 40309 [2020-10-28 13:24:42,220 INFO L226 Difference]: Without dead ends: 20496 [2020-10-28 13:24:42,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:24:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20496 states. [2020-10-28 13:24:42,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20496 to 19818. [2020-10-28 13:24:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19818 states. [2020-10-28 13:24:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19818 states to 19818 states and 21324 transitions. [2020-10-28 13:24:42,551 INFO L78 Accepts]: Start accepts. Automaton has 19818 states and 21324 transitions. Word has length 780 [2020-10-28 13:24:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:42,552 INFO L481 AbstractCegarLoop]: Abstraction has 19818 states and 21324 transitions. [2020-10-28 13:24:42,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 19818 states and 21324 transitions. [2020-10-28 13:24:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2020-10-28 13:24:42,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:42,572 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:24:42,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:24:42,573 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:42,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:42,573 INFO L82 PathProgramCache]: Analyzing trace with hash -901139740, now seen corresponding path program 1 times [2020-10-28 13:24:42,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:42,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239894232] [2020-10-28 13:24:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:46,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 912 [2020-10-28 13:24:46,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:24:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3575 [2020-10-28 13:24:46,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:46,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-28 13:24:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:24:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:46,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:46,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:46,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:46,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:46,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:46,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:46,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:46,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:24:46,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:24:46,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:46,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:46,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:24:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:46,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:46,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:46,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:24:46,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:24:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:46,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:24:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:47,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:47,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:24:47,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:47,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:24:47,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:47,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:47,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:47,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:47,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 13:24:47,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-28 13:24:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:47,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:47,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:47,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:24:47,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-28 13:24:47,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:47,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:24:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:24:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 680 proven. 2 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-28 13:24:48,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239894232] [2020-10-28 13:24:48,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:48,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:48,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067943254] [2020-10-28 13:24:48,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:48,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:48,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:48,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:48,748 INFO L87 Difference]: Start difference. First operand 19818 states and 21324 transitions. Second operand 7 states. [2020-10-28 13:24:53,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:53,502 INFO L93 Difference]: Finished difference Result 39630 states and 42669 transitions. [2020-10-28 13:24:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:24:53,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 894 [2020-10-28 13:24:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:53,537 INFO L225 Difference]: With dead ends: 39630 [2020-10-28 13:24:53,537 INFO L226 Difference]: Without dead ends: 20496 [2020-10-28 13:24:53,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:24:53,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20496 states. [2020-10-28 13:24:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20496 to 20492. [2020-10-28 13:24:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20492 states. [2020-10-28 13:24:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20492 states to 20492 states and 21975 transitions. [2020-10-28 13:24:53,855 INFO L78 Accepts]: Start accepts. Automaton has 20492 states and 21975 transitions. Word has length 894 [2020-10-28 13:24:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:53,856 INFO L481 AbstractCegarLoop]: Abstraction has 20492 states and 21975 transitions. [2020-10-28 13:24:53,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 20492 states and 21975 transitions. [2020-10-28 13:24:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2020-10-28 13:24:53,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:53,877 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:24:53,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:24:53,877 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:53,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:53,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1158378916, now seen corresponding path program 1 times [2020-10-28 13:24:53,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:53,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032536374] [2020-10-28 13:24:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:57,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:57,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 916 [2020-10-28 13:24:57,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:24:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3371 [2020-10-28 13:24:57,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:57,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:24:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:24:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:57,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:57,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:57,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:57,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:57,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:57,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:57,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:57,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:57,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:57,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:57,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:57,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:57,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:24:57,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:57,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:57,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:57,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:57,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:24:57,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:57,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:24:57,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:57,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:24:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:24:58,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:24:58,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:24:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:24:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:24:58,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-28 13:24:58,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:24:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 684 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-28 13:24:59,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032536374] [2020-10-28 13:24:59,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:59,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:59,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041536670] [2020-10-28 13:24:59,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:59,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:59,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:59,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:59,590 INFO L87 Difference]: Start difference. First operand 20492 states and 21975 transitions. Second operand 7 states. [2020-10-28 13:25:05,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:05,703 INFO L93 Difference]: Finished difference Result 40976 states and 43975 transitions. [2020-10-28 13:25:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:25:05,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 898 [2020-10-28 13:25:05,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:05,747 INFO L225 Difference]: With dead ends: 40976 [2020-10-28 13:25:05,747 INFO L226 Difference]: Without dead ends: 21168 [2020-10-28 13:25:05,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:25:05,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21168 states. [2020-10-28 13:25:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21168 to 20829. [2020-10-28 13:25:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20829 states. [2020-10-28 13:25:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20829 states to 20829 states and 22316 transitions. [2020-10-28 13:25:06,189 INFO L78 Accepts]: Start accepts. Automaton has 20829 states and 22316 transitions. Word has length 898 [2020-10-28 13:25:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:06,190 INFO L481 AbstractCegarLoop]: Abstraction has 20829 states and 22316 transitions. [2020-10-28 13:25:06,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 20829 states and 22316 transitions. [2020-10-28 13:25:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2020-10-28 13:25:06,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:06,211 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:06,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 13:25:06,212 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:06,213 INFO L82 PathProgramCache]: Analyzing trace with hash 422141451, now seen corresponding path program 1 times [2020-10-28 13:25:06,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:06,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034844694] [2020-10-28 13:25:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 934 [2020-10-28 13:25:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-28 13:25:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 910 [2020-10-28 13:25:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 13:25:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:07,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:07,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:07,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:25:07,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:25:07,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:25:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:07,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:25:07,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:25:07,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:25:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:07,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-28 13:25:07,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:25:07,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:25:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 13:25:07,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:25:07,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:07,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2020-10-28 13:25:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-28 13:25:08,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 1034 trivial. 0 not checked. [2020-10-28 13:25:08,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034844694] [2020-10-28 13:25:08,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:08,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:25:08,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125082599] [2020-10-28 13:25:08,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:25:08,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:08,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:25:08,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:25:08,528 INFO L87 Difference]: Start difference. First operand 20829 states and 22316 transitions. Second operand 5 states. [2020-10-28 13:25:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:12,064 INFO L93 Difference]: Finished difference Result 44011 states and 47181 transitions. [2020-10-28 13:25:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:25:12,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 914 [2020-10-28 13:25:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:12,105 INFO L225 Difference]: With dead ends: 44011 [2020-10-28 13:25:12,106 INFO L226 Difference]: Without dead ends: 23866 [2020-10-28 13:25:12,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:25:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23866 states. [2020-10-28 13:25:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23866 to 23192. [2020-10-28 13:25:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23192 states. [2020-10-28 13:25:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23192 states to 23192 states and 24755 transitions. [2020-10-28 13:25:12,465 INFO L78 Accepts]: Start accepts. Automaton has 23192 states and 24755 transitions. Word has length 914 [2020-10-28 13:25:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:12,466 INFO L481 AbstractCegarLoop]: Abstraction has 23192 states and 24755 transitions. [2020-10-28 13:25:12,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:25:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23192 states and 24755 transitions. [2020-10-28 13:25:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1189 [2020-10-28 13:25:12,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:12,493 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:25:12,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 13:25:12,493 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:12,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1103475288, now seen corresponding path program 1 times [2020-10-28 13:25:12,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:12,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27026100] [2020-10-28 13:25:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:13,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:15,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:17,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1214 [2020-10-28 13:25:17,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:25:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:25:17,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:17,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 794 [2020-10-28 13:25:17,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:25:17,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:17,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:17,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:17,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:17,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:17,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:25:17,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:17,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:17,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:17,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:17,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:17,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:17,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:17,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:18,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:25:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:25:18,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:18,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:25:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:18,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:18,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:18,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:25:18,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:25:18,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:18,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:18,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:25:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:18,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:25:18,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:25:18,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:18,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:18,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:25:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:18,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:18,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:18,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:25:18,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:25:18,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:18,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:18,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:25:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:18,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:18,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:25:18,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:18,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:25:18,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:18,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:25:18,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:25:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:18,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:18,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:25:18,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:18,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 13:25:18,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:18,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 13:25:18,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 926 [2020-10-28 13:25:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:19,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:19,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:25:19,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:19,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:25:19,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:19,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:25:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:19,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1036 [2020-10-28 13:25:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:19,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:19,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:25:19,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:25:19,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:19,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:25:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3274 backedges. 755 proven. 244 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2020-10-28 13:25:20,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27026100] [2020-10-28 13:25:20,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:20,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:25:20,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444582972] [2020-10-28 13:25:20,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:25:20,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:20,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:25:20,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:25:20,264 INFO L87 Difference]: Start difference. First operand 23192 states and 24755 transitions. Second operand 8 states.