/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:50:19,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:50:19,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:50:19,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:50:19,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:50:19,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:50:19,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:50:19,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:50:19,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:50:19,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:50:19,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:50:19,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:50:19,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:50:19,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:50:19,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:50:19,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:50:19,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:50:19,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:50:19,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:50:19,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:50:19,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:50:19,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:50:19,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:50:19,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:50:19,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:50:19,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:50:19,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:50:19,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:50:19,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:50:19,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:50:19,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:50:19,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:50:19,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:50:19,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:50:19,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:50:19,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:50:19,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:50:19,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:50:19,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:50:19,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:50:19,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:50:19,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:50:19,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:50:19,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:50:19,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:50:19,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:50:19,571 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:50:19,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:50:19,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:50:19,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:50:19,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:50:19,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:50:19,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:50:19,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:50:19,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:50:19,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:50:19,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:50:19,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:50:19,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:50:19,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:50:19,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:50:19,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:50:19,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:50:19,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:50:19,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:50:19,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:50:19,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:50:19,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:50:19,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:50:19,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:50:19,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:50:19,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:50:20,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:50:20,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:50:20,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:50:20,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:50:20,096 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:50:20,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label48.c [2020-10-29 06:50:20,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c936ce0fb/38726e3afd4948c383e9b5a41a19a2f2/FLAG7da9f55c2 [2020-10-29 06:50:20,941 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:50:20,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label48.c [2020-10-29 06:50:20,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c936ce0fb/38726e3afd4948c383e9b5a41a19a2f2/FLAG7da9f55c2 [2020-10-29 06:50:21,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c936ce0fb/38726e3afd4948c383e9b5a41a19a2f2 [2020-10-29 06:50:21,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:50:21,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:50:21,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:50:21,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:50:21,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:50:21,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:50:21" (1/1) ... [2020-10-29 06:50:21,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef6a554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21, skipping insertion in model container [2020-10-29 06:50:21,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:50:21" (1/1) ... [2020-10-29 06:50:21,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:50:21,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:50:21,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:50:21,874 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:50:22,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:50:22,080 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:50:22,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22 WrapperNode [2020-10-29 06:50:22,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:50:22,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:50:22,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:50:22,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:50:22,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22" (1/1) ... [2020-10-29 06:50:22,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22" (1/1) ... [2020-10-29 06:50:22,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22" (1/1) ... [2020-10-29 06:50:22,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22" (1/1) ... [2020-10-29 06:50:22,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22" (1/1) ... [2020-10-29 06:50:22,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22" (1/1) ... [2020-10-29 06:50:22,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22" (1/1) ... [2020-10-29 06:50:22,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:50:22,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:50:22,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:50:22,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:50:22,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:50:22,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:50:22,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:50:22,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:50:22,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:50:22,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:50:22,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:50:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:50:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:50:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:50:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:50:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:50:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:50:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:50:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:50:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:50:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:50:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:50:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:50:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:50:24,499 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:50:24,500 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:50:24,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:50:24 BoogieIcfgContainer [2020-10-29 06:50:24,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:50:24,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:50:24,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:50:24,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:50:24,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:50:21" (1/3) ... [2020-10-29 06:50:24,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c774d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:50:24, skipping insertion in model container [2020-10-29 06:50:24,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:22" (2/3) ... [2020-10-29 06:50:24,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c774d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:50:24, skipping insertion in model container [2020-10-29 06:50:24,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:50:24" (3/3) ... [2020-10-29 06:50:24,512 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label48.c [2020-10-29 06:50:24,525 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:50:24,530 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:50:24,544 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:50:24,575 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:50:24,575 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:50:24,575 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:50:24,575 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:50:24,576 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:50:24,576 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:50:24,576 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:50:24,576 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:50:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:50:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 06:50:24,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:24,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:24,612 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:24,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2089934182, now seen corresponding path program 1 times [2020-10-29 06:50:24,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:24,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728990549] [2020-10-29 06:50:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:24,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:25,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:25,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 06:50:25,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-10-29 06:50:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:25,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:50:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 06:50:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 06:50:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:25,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:25,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:25,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:25,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 06:50:25,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:25,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:25,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:25,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728990549] [2020-10-29 06:50:25,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:50:25,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:50:25,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047101223] [2020-10-29 06:50:25,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:50:25,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:25,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:50:25,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:50:25,981 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-29 06:50:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:30,530 INFO L93 Difference]: Finished difference Result 1004 states and 1802 transitions. [2020-10-29 06:50:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:50:30,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-29 06:50:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:30,551 INFO L225 Difference]: With dead ends: 1004 [2020-10-29 06:50:30,552 INFO L226 Difference]: Without dead ends: 640 [2020-10-29 06:50:30,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:30,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-29 06:50:30,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 622. [2020-10-29 06:50:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-10-29 06:50:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 904 transitions. [2020-10-29 06:50:30,681 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 904 transitions. Word has length 57 [2020-10-29 06:50:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:30,682 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 904 transitions. [2020-10-29 06:50:30,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:50:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 904 transitions. [2020-10-29 06:50:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 06:50:30,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:30,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:50:30,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:50:30,690 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:30,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:30,691 INFO L82 PathProgramCache]: Analyzing trace with hash -2089777305, now seen corresponding path program 1 times [2020-10-29 06:50:30,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:30,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293427727] [2020-10-29 06:50:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:32,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:32,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:50:32,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1633 [2020-10-29 06:50:32,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:32,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 06:50:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 06:50:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:32,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:32,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:32,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:32,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:50:32,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:32,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:50:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:32,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:32,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:32,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:50:32,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 06:50:32,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:32,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:50:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:32,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293427727] [2020-10-29 06:50:32,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:32,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:50:32,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163422714] [2020-10-29 06:50:32,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:50:32,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:32,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:50:32,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:50:32,934 INFO L87 Difference]: Start difference. First operand 622 states and 904 transitions. Second operand 5 states. [2020-10-29 06:50:35,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:35,914 INFO L93 Difference]: Finished difference Result 1818 states and 2693 transitions. [2020-10-29 06:50:35,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:50:35,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 06:50:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:35,932 INFO L225 Difference]: With dead ends: 1818 [2020-10-29 06:50:35,932 INFO L226 Difference]: Without dead ends: 1202 [2020-10-29 06:50:35,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:50:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-10-29 06:50:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1198. [2020-10-29 06:50:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-10-29 06:50:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1605 transitions. [2020-10-29 06:50:36,034 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1605 transitions. Word has length 127 [2020-10-29 06:50:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:36,036 INFO L481 AbstractCegarLoop]: Abstraction has 1198 states and 1605 transitions. [2020-10-29 06:50:36,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:50:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1605 transitions. [2020-10-29 06:50:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 06:50:36,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:36,049 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:50:36,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:50:36,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:36,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:36,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1525483323, now seen corresponding path program 1 times [2020-10-29 06:50:36,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:36,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650262561] [2020-10-29 06:50:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:38,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:38,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:50:38,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:50:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2090 [2020-10-29 06:50:38,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:38,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:50:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:38,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:50:38,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:38,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:38,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:38,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:38,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:50:38,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:38,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:38,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:38,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:38,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:38,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:38,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:38,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:50:38,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:38,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 06:50:38,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:38,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:50:38,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:50:38,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650262561] [2020-10-29 06:50:38,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:38,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:50:38,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225933704] [2020-10-29 06:50:38,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:50:38,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:50:38,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:50:38,848 INFO L87 Difference]: Start difference. First operand 1198 states and 1605 transitions. Second operand 6 states. [2020-10-29 06:50:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:41,592 INFO L93 Difference]: Finished difference Result 2782 states and 3716 transitions. [2020-10-29 06:50:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 06:50:41,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-10-29 06:50:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:41,606 INFO L225 Difference]: With dead ends: 2782 [2020-10-29 06:50:41,606 INFO L226 Difference]: Without dead ends: 1590 [2020-10-29 06:50:41,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:41,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2020-10-29 06:50:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1589. [2020-10-29 06:50:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-10-29 06:50:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2055 transitions. [2020-10-29 06:50:41,675 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2055 transitions. Word has length 137 [2020-10-29 06:50:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:41,676 INFO L481 AbstractCegarLoop]: Abstraction has 1589 states and 2055 transitions. [2020-10-29 06:50:41,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:50:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2055 transitions. [2020-10-29 06:50:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 06:50:41,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:41,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:50:41,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:50:41,679 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:41,680 INFO L82 PathProgramCache]: Analyzing trace with hash 2040490418, now seen corresponding path program 1 times [2020-10-29 06:50:41,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:41,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353031413] [2020-10-29 06:50:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:42,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:42,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 06:50:42,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:42,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-29 06:50:42,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:42,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:50:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 06:50:42,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:42,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:42,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:42,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:42,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:42,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:50:42,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:42,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:42,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:42,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:42,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:42,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:42,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:42,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:42,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:42,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 06:50:42,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:42,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:50:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:42,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353031413] [2020-10-29 06:50:42,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:42,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:50:42,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640703948] [2020-10-29 06:50:42,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:50:42,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:42,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:50:42,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:50:42,630 INFO L87 Difference]: Start difference. First operand 1589 states and 2055 transitions. Second operand 5 states. [2020-10-29 06:50:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:45,422 INFO L93 Difference]: Finished difference Result 3184 states and 4314 transitions. [2020-10-29 06:50:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:50:45,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-29 06:50:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:45,435 INFO L225 Difference]: With dead ends: 3184 [2020-10-29 06:50:45,435 INFO L226 Difference]: Without dead ends: 1979 [2020-10-29 06:50:45,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:50:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2020-10-29 06:50:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1974. [2020-10-29 06:50:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2020-10-29 06:50:45,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2637 transitions. [2020-10-29 06:50:45,513 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2637 transitions. Word has length 188 [2020-10-29 06:50:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:45,516 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 2637 transitions. [2020-10-29 06:50:45,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:50:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2637 transitions. [2020-10-29 06:50:45,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 06:50:45,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:45,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:45,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:50:45,523 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:45,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1221739814, now seen corresponding path program 1 times [2020-10-29 06:50:45,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:45,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489819870] [2020-10-29 06:50:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:45,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:48,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 06:50:48,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:50:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2719 [2020-10-29 06:50:48,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:48,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:50:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:50:48,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:48,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:48,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:48,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:48,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:50:48,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:48,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:48,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:48,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:48,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:48,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 06:50:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:48,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:50:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:48,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:48,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:50:48,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:48,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 06:50:48,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:48,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:48,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:50:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:50:49,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489819870] [2020-10-29 06:50:49,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:49,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:50:49,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915455763] [2020-10-29 06:50:49,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:50:49,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:50:49,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:49,084 INFO L87 Difference]: Start difference. First operand 1974 states and 2637 transitions. Second operand 7 states. [2020-10-29 06:50:52,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:52,788 INFO L93 Difference]: Finished difference Result 4084 states and 6319 transitions. [2020-10-29 06:50:52,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:50:52,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-29 06:50:52,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:52,818 INFO L225 Difference]: With dead ends: 4084 [2020-10-29 06:50:52,818 INFO L226 Difference]: Without dead ends: 2494 [2020-10-29 06:50:52,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:50:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2020-10-29 06:50:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2392. [2020-10-29 06:50:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2392 states. [2020-10-29 06:50:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3228 transitions. [2020-10-29 06:50:52,973 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3228 transitions. Word has length 253 [2020-10-29 06:50:52,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:52,973 INFO L481 AbstractCegarLoop]: Abstraction has 2392 states and 3228 transitions. [2020-10-29 06:50:52,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:50:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3228 transitions. [2020-10-29 06:50:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-29 06:50:52,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:52,981 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:52,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:50:52,982 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:52,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash -839871163, now seen corresponding path program 1 times [2020-10-29 06:50:52,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:52,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298992556] [2020-10-29 06:50:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:53,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:53,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:54,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:58,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:58,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 06:50:58,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:50:58,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 06:50:58,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:58,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:50:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 06:50:58,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:58,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:58,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:58,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 06:50:58,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:58,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:58,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:58,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:58,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:58,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:58,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-29 06:50:58,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:58,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:50:58,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:50:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:58,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:58,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:58,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:50:58,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:58,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 06:50:58,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:58,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 06:50:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:58,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 98 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:50:58,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298992556] [2020-10-29 06:50:58,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:58,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:50:58,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520650987] [2020-10-29 06:50:58,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:50:58,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:58,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:50:58,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:58,989 INFO L87 Difference]: Start difference. First operand 2392 states and 3228 transitions. Second operand 7 states. [2020-10-29 06:51:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:02,535 INFO L93 Difference]: Finished difference Result 5453 states and 8129 transitions. [2020-10-29 06:51:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:51:02,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-29 06:51:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:02,564 INFO L225 Difference]: With dead ends: 5453 [2020-10-29 06:51:02,565 INFO L226 Difference]: Without dead ends: 3445 [2020-10-29 06:51:02,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2020-10-29 06:51:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 3202. [2020-10-29 06:51:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3202 states. [2020-10-29 06:51:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 4316 transitions. [2020-10-29 06:51:02,688 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 4316 transitions. Word has length 268 [2020-10-29 06:51:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:02,688 INFO L481 AbstractCegarLoop]: Abstraction has 3202 states and 4316 transitions. [2020-10-29 06:51:02,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 4316 transitions. [2020-10-29 06:51:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-29 06:51:02,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:02,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:02,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:51:02,696 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:02,696 INFO L82 PathProgramCache]: Analyzing trace with hash -26216586, now seen corresponding path program 1 times [2020-10-29 06:51:02,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:02,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243352694] [2020-10-29 06:51:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:02,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:04,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:05,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:05,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-29 06:51:05,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:05,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2790 [2020-10-29 06:51:05,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:05,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:51:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:51:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:05,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:05,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:05,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:05,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:05,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:05,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:05,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:05,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:05,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:05,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:05,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:05,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:51:05,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:05,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:51:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:05,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:05,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:06,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:06,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:51:06,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 06:51:06,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:06,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 06:51:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:51:06,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243352694] [2020-10-29 06:51:06,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:06,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:06,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938992031] [2020-10-29 06:51:06,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:06,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:06,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:06,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:06,412 INFO L87 Difference]: Start difference. First operand 3202 states and 4316 transitions. Second operand 7 states. [2020-10-29 06:51:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:10,124 INFO L93 Difference]: Finished difference Result 8569 states and 11954 transitions. [2020-10-29 06:51:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:51:10,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-29 06:51:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:10,154 INFO L225 Difference]: With dead ends: 8569 [2020-10-29 06:51:10,154 INFO L226 Difference]: Without dead ends: 5751 [2020-10-29 06:51:10,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2020-10-29 06:51:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 5738. [2020-10-29 06:51:10,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5738 states. [2020-10-29 06:51:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5738 states to 5738 states and 7725 transitions. [2020-10-29 06:51:10,358 INFO L78 Accepts]: Start accepts. Automaton has 5738 states and 7725 transitions. Word has length 274 [2020-10-29 06:51:10,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:10,359 INFO L481 AbstractCegarLoop]: Abstraction has 5738 states and 7725 transitions. [2020-10-29 06:51:10,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5738 states and 7725 transitions. [2020-10-29 06:51:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-29 06:51:10,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:10,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:10,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:51:10,369 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:10,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1006773282, now seen corresponding path program 1 times [2020-10-29 06:51:10,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:10,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559967809] [2020-10-29 06:51:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:10,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:11,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 06:51:11,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-29 06:51:11,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:11,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:51:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 06:51:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:11,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:11,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:11,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:11,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:11,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:11,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:11,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:51:11,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:11,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 06:51:11,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:11,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:11,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:11,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:11,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:51:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:11,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:51:11,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 06:51:11,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:11,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:51:11,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-29 06:51:12,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559967809] [2020-10-29 06:51:12,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:12,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:51:12,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005057098] [2020-10-29 06:51:12,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:51:12,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:12,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:51:12,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:51:12,057 INFO L87 Difference]: Start difference. First operand 5738 states and 7725 transitions. Second operand 5 states. [2020-10-29 06:51:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:15,212 INFO L93 Difference]: Finished difference Result 12436 states and 16927 transitions. [2020-10-29 06:51:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:51:15,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-29 06:51:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:15,248 INFO L225 Difference]: With dead ends: 12436 [2020-10-29 06:51:15,248 INFO L226 Difference]: Without dead ends: 7082 [2020-10-29 06:51:15,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7082 states. [2020-10-29 06:51:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7082 to 6510. [2020-10-29 06:51:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6510 states. [2020-10-29 06:51:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 8628 transitions. [2020-10-29 06:51:15,468 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 8628 transitions. Word has length 284 [2020-10-29 06:51:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:15,468 INFO L481 AbstractCegarLoop]: Abstraction has 6510 states and 8628 transitions. [2020-10-29 06:51:15,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:51:15,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 8628 transitions. [2020-10-29 06:51:15,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-29 06:51:15,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:15,478 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:15,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:51:15,479 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:15,480 INFO L82 PathProgramCache]: Analyzing trace with hash 235098012, now seen corresponding path program 1 times [2020-10-29 06:51:15,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:15,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110730171] [2020-10-29 06:51:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:15,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:15,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:18,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:18,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 06:51:18,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:51:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2616 [2020-10-29 06:51:18,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:18,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:51:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:51:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:18,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:18,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:18,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:51:18,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:18,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:18,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:18,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:18,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:51:18,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 06:51:18,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:18,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:51:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:18,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:51:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:18,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:51:18,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 06:51:18,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:18,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:51:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 124 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:51:19,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110730171] [2020-10-29 06:51:19,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:19,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:19,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019300961] [2020-10-29 06:51:19,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:19,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:19,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:19,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:19,012 INFO L87 Difference]: Start difference. First operand 6510 states and 8628 transitions. Second operand 7 states. [2020-10-29 06:51:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:24,176 INFO L93 Difference]: Finished difference Result 13819 states and 18580 transitions. [2020-10-29 06:51:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:51:24,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-29 06:51:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:24,218 INFO L225 Difference]: With dead ends: 13819 [2020-10-29 06:51:24,218 INFO L226 Difference]: Without dead ends: 7693 [2020-10-29 06:51:24,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7693 states. [2020-10-29 06:51:24,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7693 to 7686. [2020-10-29 06:51:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7686 states. [2020-10-29 06:51:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7686 states to 7686 states and 10054 transitions. [2020-10-29 06:51:24,461 INFO L78 Accepts]: Start accepts. Automaton has 7686 states and 10054 transitions. Word has length 284 [2020-10-29 06:51:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:24,462 INFO L481 AbstractCegarLoop]: Abstraction has 7686 states and 10054 transitions. [2020-10-29 06:51:24,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:24,462 INFO L276 IsEmpty]: Start isEmpty. Operand 7686 states and 10054 transitions. [2020-10-29 06:51:24,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-29 06:51:24,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:24,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-10-29 06:51:24,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:51:24,473 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:24,473 INFO L82 PathProgramCache]: Analyzing trace with hash 54033569, now seen corresponding path program 1 times [2020-10-29 06:51:24,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:24,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329921085] [2020-10-29 06:51:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 06:51:26,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1799 [2020-10-29 06:51:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:51:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-29 06:51:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:26,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:26,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:26,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:26,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:51:26,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:26,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:26,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:26,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:26,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:51:26,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 06:51:26,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:51:26,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:51:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:27,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:27,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:51:27,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 06:51:27,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:27,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 06:51:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 06:51:27,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329921085] [2020-10-29 06:51:27,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:27,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:51:27,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565254584] [2020-10-29 06:51:27,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:51:27,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:27,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:51:27,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:27,125 INFO L87 Difference]: Start difference. First operand 7686 states and 10054 transitions. Second operand 6 states. [2020-10-29 06:51:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:29,991 INFO L93 Difference]: Finished difference Result 14986 states and 19684 transitions. [2020-10-29 06:51:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:51:29,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2020-10-29 06:51:29,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:30,031 INFO L225 Difference]: With dead ends: 14986 [2020-10-29 06:51:30,031 INFO L226 Difference]: Without dead ends: 7690 [2020-10-29 06:51:30,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:30,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2020-10-29 06:51:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 7682. [2020-10-29 06:51:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7682 states. [2020-10-29 06:51:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7682 states to 7682 states and 9638 transitions. [2020-10-29 06:51:30,234 INFO L78 Accepts]: Start accepts. Automaton has 7682 states and 9638 transitions. Word has length 295 [2020-10-29 06:51:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:30,235 INFO L481 AbstractCegarLoop]: Abstraction has 7682 states and 9638 transitions. [2020-10-29 06:51:30,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:51:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 7682 states and 9638 transitions. [2020-10-29 06:51:30,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-29 06:51:30,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:30,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:30,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:51:30,247 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:30,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:30,247 INFO L82 PathProgramCache]: Analyzing trace with hash 658563690, now seen corresponding path program 1 times [2020-10-29 06:51:30,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:30,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77955663] [2020-10-29 06:51:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:30,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:30,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-29 06:51:30,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-29 06:51:30,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:30,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:51:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:51:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:30,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:30,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:30,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:30,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:30,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:30,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:30,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:30,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:31,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:31,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:51:31,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:31,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 06:51:31,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:31,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:51:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:31,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:51:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:31,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:31,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:51:31,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 06:51:31,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:31,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:51:31,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:51:31,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77955663] [2020-10-29 06:51:31,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:31,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:31,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129059889] [2020-10-29 06:51:31,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:31,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:31,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:31,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:31,650 INFO L87 Difference]: Start difference. First operand 7682 states and 9638 transitions. Second operand 7 states. [2020-10-29 06:51:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:35,818 INFO L93 Difference]: Finished difference Result 16149 states and 20522 transitions. [2020-10-29 06:51:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:51:35,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-29 06:51:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:35,895 INFO L225 Difference]: With dead ends: 16149 [2020-10-29 06:51:35,895 INFO L226 Difference]: Without dead ends: 8851 [2020-10-29 06:51:35,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:51:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8851 states. [2020-10-29 06:51:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8851 to 8448. [2020-10-29 06:51:36,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8448 states. [2020-10-29 06:51:36,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8448 states to 8448 states and 10540 transitions. [2020-10-29 06:51:36,131 INFO L78 Accepts]: Start accepts. Automaton has 8448 states and 10540 transitions. Word has length 298 [2020-10-29 06:51:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:36,132 INFO L481 AbstractCegarLoop]: Abstraction has 8448 states and 10540 transitions. [2020-10-29 06:51:36,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:36,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8448 states and 10540 transitions. [2020-10-29 06:51:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 06:51:36,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:36,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:36,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:51:36,145 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:36,146 INFO L82 PathProgramCache]: Analyzing trace with hash 440818296, now seen corresponding path program 1 times [2020-10-29 06:51:36,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:36,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690481500] [2020-10-29 06:51:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:37,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:37,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 06:51:37,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:37,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-29 06:51:37,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:37,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-29 06:51:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 06:51:37,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:37,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:37,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:37,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:37,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:37,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:37,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:37,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:37,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:37,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:37,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:37,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:37,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:37,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:51:37,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:37,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:37,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:37,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 06:51:37,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 06:51:37,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:37,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:37,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:51:37,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-29 06:51:38,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690481500] [2020-10-29 06:51:38,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:38,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:51:38,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304441693] [2020-10-29 06:51:38,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:51:38,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:38,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:51:38,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:51:38,105 INFO L87 Difference]: Start difference. First operand 8448 states and 10540 transitions. Second operand 5 states. [2020-10-29 06:51:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:41,142 INFO L93 Difference]: Finished difference Result 18250 states and 22858 transitions. [2020-10-29 06:51:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:51:41,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-29 06:51:41,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:41,179 INFO L225 Difference]: With dead ends: 18250 [2020-10-29 06:51:41,180 INFO L226 Difference]: Without dead ends: 10186 [2020-10-29 06:51:41,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2020-10-29 06:51:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 9983. [2020-10-29 06:51:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9983 states. [2020-10-29 06:51:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9983 states to 9983 states and 12317 transitions. [2020-10-29 06:51:41,427 INFO L78 Accepts]: Start accepts. Automaton has 9983 states and 12317 transitions. Word has length 303 [2020-10-29 06:51:41,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:41,428 INFO L481 AbstractCegarLoop]: Abstraction has 9983 states and 12317 transitions. [2020-10-29 06:51:41,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:51:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 9983 states and 12317 transitions. [2020-10-29 06:51:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-29 06:51:41,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:41,440 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:41,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:51:41,441 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:41,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:41,441 INFO L82 PathProgramCache]: Analyzing trace with hash -244697205, now seen corresponding path program 1 times [2020-10-29 06:51:41,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:41,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463531371] [2020-10-29 06:51:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:41,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:41,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:44,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-29 06:51:44,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:51:44,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2488 [2020-10-29 06:51:44,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:44,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-29 06:51:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:51:44,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:44,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:44,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:44,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:51:44,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:44,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:44,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:44,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:44,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:44,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:44,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 06:51:44,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 06:51:44,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:44,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 06:51:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-29 06:51:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:44,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:51:44,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:44,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 06:51:44,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:44,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:51:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 124 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:51:44,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463531371] [2020-10-29 06:51:44,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:44,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:51:44,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526269671] [2020-10-29 06:51:44,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:51:44,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:44,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:51:44,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:44,813 INFO L87 Difference]: Start difference. First operand 9983 states and 12317 transitions. Second operand 6 states. [2020-10-29 06:51:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:47,875 INFO L93 Difference]: Finished difference Result 21115 states and 26304 transitions. [2020-10-29 06:51:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:51:47,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 322 [2020-10-29 06:51:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:47,911 INFO L225 Difference]: With dead ends: 21115 [2020-10-29 06:51:47,912 INFO L226 Difference]: Without dead ends: 11516 [2020-10-29 06:51:47,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:51:47,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11516 states. [2020-10-29 06:51:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11516 to 11316. [2020-10-29 06:51:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11316 states. [2020-10-29 06:51:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11316 states to 11316 states and 13803 transitions. [2020-10-29 06:51:48,166 INFO L78 Accepts]: Start accepts. Automaton has 11316 states and 13803 transitions. Word has length 322 [2020-10-29 06:51:48,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:48,167 INFO L481 AbstractCegarLoop]: Abstraction has 11316 states and 13803 transitions. [2020-10-29 06:51:48,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:51:48,167 INFO L276 IsEmpty]: Start isEmpty. Operand 11316 states and 13803 transitions. [2020-10-29 06:51:48,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-29 06:51:48,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:48,177 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:48,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:51:48,177 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:48,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:48,178 INFO L82 PathProgramCache]: Analyzing trace with hash -400722716, now seen corresponding path program 1 times [2020-10-29 06:51:48,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:48,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356461963] [2020-10-29 06:51:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:48,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:48,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:50,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-29 06:51:50,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-10-29 06:51:50,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:50,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:51:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 332 [2020-10-29 06:51:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:50,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:50,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:51:50,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:50,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:50,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:50,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:50,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:51:50,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 06:51:50,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:50,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:51:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:50,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:51:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:50,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 06:51:50,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 06:51:50,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:50,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:51:50,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 122 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:51:51,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356461963] [2020-10-29 06:51:51,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:51,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:51:51,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812008728] [2020-10-29 06:51:51,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:51:51,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:51,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:51:51,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:51:51,004 INFO L87 Difference]: Start difference. First operand 11316 states and 13803 transitions. Second operand 9 states. [2020-10-29 06:51:55,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:55,588 INFO L93 Difference]: Finished difference Result 27840 states and 35646 transitions. [2020-10-29 06:51:55,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:51:55,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 327 [2020-10-29 06:51:55,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:55,654 INFO L225 Difference]: With dead ends: 27840 [2020-10-29 06:51:55,655 INFO L226 Difference]: Without dead ends: 16528 [2020-10-29 06:51:55,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:51:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16528 states. [2020-10-29 06:51:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16528 to 16145. [2020-10-29 06:51:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16145 states. [2020-10-29 06:51:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 19387 transitions. [2020-10-29 06:51:56,106 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 19387 transitions. Word has length 327 [2020-10-29 06:51:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:56,107 INFO L481 AbstractCegarLoop]: Abstraction has 16145 states and 19387 transitions. [2020-10-29 06:51:56,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:51:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 19387 transitions. [2020-10-29 06:51:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-29 06:51:56,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:56,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 06:51:56,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:51:56,122 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:56,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:56,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1064423957, now seen corresponding path program 1 times [2020-10-29 06:51:56,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:56,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365698016] [2020-10-29 06:51:56,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:56,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:58,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:01,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-29 06:52:01,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:52:01,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 06:52:01,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:01,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:52:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 06:52:01,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:01,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:01,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:01,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:52:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:01,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:01,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:01,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:01,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 06:52:01,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:01,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:52:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:01,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:01,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:01,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 06:52:01,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:01,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:01,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:01,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-29 06:52:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:02,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:02,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:52:02,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:02,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 06:52:02,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:02,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:52:02,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 222 proven. 100 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 06:52:02,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365698016] [2020-10-29 06:52:02,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:02,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:52:02,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299198738] [2020-10-29 06:52:02,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:52:02,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:02,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:52:02,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:52:02,196 INFO L87 Difference]: Start difference. First operand 16145 states and 19387 transitions. Second operand 10 states. [2020-10-29 06:52:02,396 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-29 06:52:08,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:08,208 INFO L93 Difference]: Finished difference Result 29814 states and 38084 transitions. [2020-10-29 06:52:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 06:52:08,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 357 [2020-10-29 06:52:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:08,278 INFO L225 Difference]: With dead ends: 29814 [2020-10-29 06:52:08,278 INFO L226 Difference]: Without dead ends: 18104 [2020-10-29 06:52:08,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-29 06:52:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18104 states. [2020-10-29 06:52:08,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18104 to 17685. [2020-10-29 06:52:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17685 states. [2020-10-29 06:52:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17685 states to 17685 states and 21103 transitions. [2020-10-29 06:52:08,762 INFO L78 Accepts]: Start accepts. Automaton has 17685 states and 21103 transitions. Word has length 357 [2020-10-29 06:52:08,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:08,763 INFO L481 AbstractCegarLoop]: Abstraction has 17685 states and 21103 transitions. [2020-10-29 06:52:08,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:52:08,763 INFO L276 IsEmpty]: Start isEmpty. Operand 17685 states and 21103 transitions. [2020-10-29 06:52:08,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-29 06:52:08,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:08,776 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:52:08,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:52:08,778 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:08,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1643226306, now seen corresponding path program 1 times [2020-10-29 06:52:08,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:08,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053200076] [2020-10-29 06:52:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:13,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:13,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-29 06:52:13,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:52:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4695 [2020-10-29 06:52:13,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:13,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:52:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-29 06:52:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:13,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:13,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:13,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:13,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:52:13,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:13,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:13,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:14,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:14,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:14,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 06:52:14,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:14,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:52:14,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:14,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:14,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:14,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:52:14,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 06:52:14,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:14,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:52:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:14,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-29 06:52:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:14,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:14,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:52:14,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:14,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-29 06:52:14,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:14,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:52:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 328 proven. 69 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 06:52:15,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053200076] [2020-10-29 06:52:15,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:15,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:52:15,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326699086] [2020-10-29 06:52:15,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:52:15,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:15,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:52:15,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:52:15,197 INFO L87 Difference]: Start difference. First operand 17685 states and 21103 transitions. Second operand 9 states. [2020-10-29 06:52:15,647 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-29 06:52:16,586 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-29 06:52:17,405 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 06:52:18,405 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-10-29 06:52:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:20,889 INFO L93 Difference]: Finished difference Result 37044 states and 44771 transitions. [2020-10-29 06:52:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 06:52:20,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 366 [2020-10-29 06:52:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:20,936 INFO L225 Difference]: With dead ends: 37044 [2020-10-29 06:52:20,936 INFO L226 Difference]: Without dead ends: 19679 [2020-10-29 06:52:20,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-29 06:52:20,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19679 states. [2020-10-29 06:52:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19679 to 17489. [2020-10-29 06:52:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17489 states. [2020-10-29 06:52:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17489 states to 17489 states and 20905 transitions. [2020-10-29 06:52:21,390 INFO L78 Accepts]: Start accepts. Automaton has 17489 states and 20905 transitions. Word has length 366 [2020-10-29 06:52:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:21,391 INFO L481 AbstractCegarLoop]: Abstraction has 17489 states and 20905 transitions. [2020-10-29 06:52:21,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:52:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 17489 states and 20905 transitions. [2020-10-29 06:52:21,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-29 06:52:21,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:21,403 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:21,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:52:21,403 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:21,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:21,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1616097510, now seen corresponding path program 1 times [2020-10-29 06:52:21,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:21,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554713277] [2020-10-29 06:52:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:22,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:24,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:24,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-29 06:52:24,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:52:24,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3230 [2020-10-29 06:52:24,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:24,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:24,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 06:52:24,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:24,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 374 [2020-10-29 06:52:24,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:24,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:24,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:24,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:52:24,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:24,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:24,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:52:25,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:25,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 06:52:25,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:52:25,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:52:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:25,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:52:25,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 06:52:25,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:52:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:52:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:52:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 270 proven. 63 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 06:52:25,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554713277] [2020-10-29 06:52:25,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:25,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:52:25,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411211390] [2020-10-29 06:52:25,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:52:25,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:25,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:52:25,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:52:25,783 INFO L87 Difference]: Start difference. First operand 17489 states and 20905 transitions. Second operand 8 states. [2020-10-29 06:52:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:30,581 INFO L93 Difference]: Finished difference Result 20787 states and 24753 transitions. [2020-10-29 06:52:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:52:30,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 367 [2020-10-29 06:52:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:30,616 INFO L225 Difference]: With dead ends: 20787 [2020-10-29 06:52:30,616 INFO L226 Difference]: Without dead ends: 20784 [2020-10-29 06:52:30,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:52:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20784 states. [2020-10-29 06:52:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20784 to 20559. [2020-10-29 06:52:30,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20559 states. [2020-10-29 06:52:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20559 states to 20559 states and 24469 transitions. [2020-10-29 06:52:31,039 INFO L78 Accepts]: Start accepts. Automaton has 20559 states and 24469 transitions. Word has length 367 [2020-10-29 06:52:31,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:31,040 INFO L481 AbstractCegarLoop]: Abstraction has 20559 states and 24469 transitions. [2020-10-29 06:52:31,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:52:31,040 INFO L276 IsEmpty]: Start isEmpty. Operand 20559 states and 24469 transitions. [2020-10-29 06:52:31,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-29 06:52:31,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:31,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:52:31,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:52:31,065 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:31,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1332109626, now seen corresponding path program 1 times [2020-10-29 06:52:31,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:31,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455748000] [2020-10-29 06:52:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:31,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:31,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:32,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-29 06:52:32,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 06:52:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-10-29 06:52:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:32,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 06:52:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:32,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:32,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:52:32,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:32,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:32,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:32,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:32,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:32,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 06:52:32,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:32,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 06:52:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:33,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:33,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:33,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:52:33,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:33,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 06:52:33,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:33,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:52:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:52:33,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:52:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:33,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-10-29 06:52:33,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455748000] [2020-10-29 06:52:33,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:33,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:52:33,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919042202] [2020-10-29 06:52:33,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:52:33,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:33,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:52:33,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:52:33,271 INFO L87 Difference]: Start difference. First operand 20559 states and 24469 transitions. Second operand 6 states. [2020-10-29 06:52:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:35,479 INFO L93 Difference]: Finished difference Result 36873 states and 44103 transitions. [2020-10-29 06:52:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:52:35,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 427 [2020-10-29 06:52:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:35,523 INFO L225 Difference]: With dead ends: 36873 [2020-10-29 06:52:35,523 INFO L226 Difference]: Without dead ends: 19606 [2020-10-29 06:52:35,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19606 states. [2020-10-29 06:52:36,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19606 to 19569. [2020-10-29 06:52:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19569 states. [2020-10-29 06:52:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19569 states to 19569 states and 23221 transitions. [2020-10-29 06:52:36,072 INFO L78 Accepts]: Start accepts. Automaton has 19569 states and 23221 transitions. Word has length 427 [2020-10-29 06:52:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:36,073 INFO L481 AbstractCegarLoop]: Abstraction has 19569 states and 23221 transitions. [2020-10-29 06:52:36,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:52:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 19569 states and 23221 transitions. [2020-10-29 06:52:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-29 06:52:36,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:36,093 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:36,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:52:36,093 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash 894572084, now seen corresponding path program 1 times [2020-10-29 06:52:36,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:36,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239257755] [2020-10-29 06:52:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:38,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:38,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-29 06:52:38,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:52:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2589 [2020-10-29 06:52:38,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:38,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:52:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:52:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:38,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:38,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:38,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:38,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:38,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:38,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:38,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:38,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:52:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:52:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:38,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:38,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:52:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:39,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:39,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:52:39,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:39,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 06:52:39,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:39,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:52:39,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:39,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:52:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:39,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:39,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:39,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:39,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:39,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 06:52:39,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:39,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:39,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-29 06:52:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:39,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:39,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:39,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:52:39,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 06:52:39,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:39,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 06:52:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 381 proven. 79 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-10-29 06:52:39,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239257755] [2020-10-29 06:52:39,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:39,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:39,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257495269] [2020-10-29 06:52:39,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:39,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:39,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:39,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:39,511 INFO L87 Difference]: Start difference. First operand 19569 states and 23221 transitions. Second operand 7 states. [2020-10-29 06:52:43,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:43,775 INFO L93 Difference]: Finished difference Result 39565 states and 46910 transitions. [2020-10-29 06:52:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:52:43,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-29 06:52:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:43,824 INFO L225 Difference]: With dead ends: 39565 [2020-10-29 06:52:43,825 INFO L226 Difference]: Without dead ends: 20380 [2020-10-29 06:52:43,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:52:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20380 states. [2020-10-29 06:52:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20380 to 19573. [2020-10-29 06:52:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19573 states. [2020-10-29 06:52:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19573 states to 19573 states and 22902 transitions. [2020-10-29 06:52:44,239 INFO L78 Accepts]: Start accepts. Automaton has 19573 states and 22902 transitions. Word has length 431 [2020-10-29 06:52:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:44,240 INFO L481 AbstractCegarLoop]: Abstraction has 19573 states and 22902 transitions. [2020-10-29 06:52:44,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 19573 states and 22902 transitions. [2020-10-29 06:52:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-29 06:52:44,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:44,265 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:44,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:52:44,265 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:44,266 INFO L82 PathProgramCache]: Analyzing trace with hash 174823137, now seen corresponding path program 1 times [2020-10-29 06:52:44,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:44,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988090851] [2020-10-29 06:52:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-29 06:52:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:52:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2916 [2020-10-29 06:52:47,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:47,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 06:52:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 443 [2020-10-29 06:52:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:47,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:47,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:47,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:52:47,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:47,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:47,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:47,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:47,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 06:52:47,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:47,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:52:47,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:47,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:47,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:47,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:52:47,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 06:52:47,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:47,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 06:52:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:48,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:52:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:48,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:48,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:52:48,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 06:52:48,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:48,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:52:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 235 proven. 151 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 06:52:48,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988090851] [2020-10-29 06:52:48,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:48,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:52:48,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366180391] [2020-10-29 06:52:48,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 06:52:48,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:48,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 06:52:48,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:52:48,418 INFO L87 Difference]: Start difference. First operand 19573 states and 22902 transitions. Second operand 11 states. [2020-10-29 06:52:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:56,366 INFO L93 Difference]: Finished difference Result 32438 states and 39865 transitions. [2020-10-29 06:52:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 06:52:56,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 436 [2020-10-29 06:52:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:56,472 INFO L225 Difference]: With dead ends: 32438 [2020-10-29 06:52:56,472 INFO L226 Difference]: Without dead ends: 32435 [2020-10-29 06:52:56,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-10-29 06:52:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32435 states. [2020-10-29 06:52:57,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32435 to 29419. [2020-10-29 06:52:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29419 states. [2020-10-29 06:52:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29419 states to 29419 states and 34448 transitions. [2020-10-29 06:52:57,229 INFO L78 Accepts]: Start accepts. Automaton has 29419 states and 34448 transitions. Word has length 436 [2020-10-29 06:52:57,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:57,230 INFO L481 AbstractCegarLoop]: Abstraction has 29419 states and 34448 transitions. [2020-10-29 06:52:57,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 06:52:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 29419 states and 34448 transitions. [2020-10-29 06:52:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-29 06:52:57,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:57,246 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:52:57,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:52:57,246 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:57,246 INFO L82 PathProgramCache]: Analyzing trace with hash -467825388, now seen corresponding path program 1 times [2020-10-29 06:52:57,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:57,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748518295] [2020-10-29 06:52:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-29 06:52:58,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-10-29 06:52:58,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-29 06:52:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 06:52:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:58,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:58,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:58,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 06:52:58,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:58,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:52:58,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 06:52:58,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:52:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:52:58,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 06:52:58,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:58,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:52:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 150 proven. 3 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-29 06:52:59,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748518295] [2020-10-29 06:52:59,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:59,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:52:59,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974862621] [2020-10-29 06:52:59,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:52:59,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:59,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:52:59,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:52:59,098 INFO L87 Difference]: Start difference. First operand 29419 states and 34448 transitions. Second operand 5 states. [2020-10-29 06:53:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:03,080 INFO L93 Difference]: Finished difference Result 54450 states and 64123 transitions. [2020-10-29 06:53:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:53:03,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 443 [2020-10-29 06:53:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:03,138 INFO L225 Difference]: With dead ends: 54450 [2020-10-29 06:53:03,138 INFO L226 Difference]: Without dead ends: 30633 [2020-10-29 06:53:03,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:53:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30633 states. [2020-10-29 06:53:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30633 to 29405. [2020-10-29 06:53:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29405 states. [2020-10-29 06:53:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29405 states to 29405 states and 34332 transitions. [2020-10-29 06:53:03,865 INFO L78 Accepts]: Start accepts. Automaton has 29405 states and 34332 transitions. Word has length 443 [2020-10-29 06:53:03,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:03,866 INFO L481 AbstractCegarLoop]: Abstraction has 29405 states and 34332 transitions. [2020-10-29 06:53:03,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:53:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 29405 states and 34332 transitions. [2020-10-29 06:53:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-29 06:53:03,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:03,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 06:53:03,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:53:03,888 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1369376635, now seen corresponding path program 1 times [2020-10-29 06:53:03,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:03,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043495135] [2020-10-29 06:53:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-29 06:53:08,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4009 [2020-10-29 06:53:08,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 06:53:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 06:53:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-29 06:53:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:08,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:53:08,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:08,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 06:53:08,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 06:53:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:53:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:53:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 06:53:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:53:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:53:08,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 06:53:08,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:53:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 06:53:08,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 306 proven. 230 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 06:53:09,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043495135] [2020-10-29 06:53:09,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:09,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:53:09,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5039335] [2020-10-29 06:53:09,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:53:09,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:09,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:53:09,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:53:09,088 INFO L87 Difference]: Start difference. First operand 29405 states and 34332 transitions. Second operand 10 states. [2020-10-29 06:53:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:17,215 INFO L93 Difference]: Finished difference Result 49538 states and 57904 transitions. [2020-10-29 06:53:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 06:53:17,219 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 474 [2020-10-29 06:53:17,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:17,376 INFO L225 Difference]: With dead ends: 49538 [2020-10-29 06:53:17,376 INFO L226 Difference]: Without dead ends: 49535 [2020-10-29 06:53:17,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-10-29 06:53:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49535 states. [2020-10-29 06:53:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49535 to 42297. [2020-10-29 06:53:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42297 states. [2020-10-29 06:53:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42297 states to 42297 states and 49325 transitions. [2020-10-29 06:53:18,408 INFO L78 Accepts]: Start accepts. Automaton has 42297 states and 49325 transitions. Word has length 474 [2020-10-29 06:53:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:18,409 INFO L481 AbstractCegarLoop]: Abstraction has 42297 states and 49325 transitions. [2020-10-29 06:53:18,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:53:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 42297 states and 49325 transitions. [2020-10-29 06:53:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-29 06:53:18,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:18,438 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:53:18,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:53:18,439 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:18,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:18,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1608544913, now seen corresponding path program 1 times [2020-10-29 06:53:18,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:18,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437765571] [2020-10-29 06:53:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:18,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:20,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-29 06:53:20,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1902 [2020-10-29 06:53:20,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:20,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:53:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:53:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-29 06:53:20,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:20,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:20,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:20,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:20,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:20,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:20,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:20,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:20,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:20,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:53:20,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:20,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:20,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:20,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:20,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:20,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 06:53:20,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:20,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:53:20,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:20,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:53:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:20,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:53:20,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 06:53:20,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:20,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:53:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-29 06:53:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:53:21,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:21,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-29 06:53:21,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:53:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:53:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 487 proven. 100 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-29 06:53:21,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437765571] [2020-10-29 06:53:21,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:21,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:53:21,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261639192] [2020-10-29 06:53:21,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:53:21,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:21,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:53:21,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:53:21,824 INFO L87 Difference]: Start difference. First operand 42297 states and 49325 transitions. Second operand 8 states. [2020-10-29 06:53:28,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:28,608 INFO L93 Difference]: Finished difference Result 69124 states and 80581 transitions. [2020-10-29 06:53:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:53:28,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 499 [2020-10-29 06:53:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:28,847 INFO L225 Difference]: With dead ends: 69124 [2020-10-29 06:53:28,847 INFO L226 Difference]: Without dead ends: 69121 [2020-10-29 06:53:28,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:53:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69121 states. [2020-10-29 06:53:29,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69121 to 59261. [2020-10-29 06:53:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59261 states. [2020-10-29 06:53:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59261 states to 59261 states and 68968 transitions. [2020-10-29 06:53:29,935 INFO L78 Accepts]: Start accepts. Automaton has 59261 states and 68968 transitions. Word has length 499 [2020-10-29 06:53:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:29,935 INFO L481 AbstractCegarLoop]: Abstraction has 59261 states and 68968 transitions. [2020-10-29 06:53:29,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:53:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 59261 states and 68968 transitions. [2020-10-29 06:53:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-29 06:53:29,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:29,968 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:29,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:53:29,969 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:29,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1718485076, now seen corresponding path program 1 times [2020-10-29 06:53:29,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:29,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714001316] [2020-10-29 06:53:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:35,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:35,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-29 06:53:35,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 06:53:35,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:35,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:53:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-29 06:53:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:35,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:35,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:35,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:53:35,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:35,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:35,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:35,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:35,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:35,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 06:53:35,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:35,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:53:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:53:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:35,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:35,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:53:35,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 06:53:35,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:35,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:35,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:53:35,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:35,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:53:35,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:35,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:53:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:36,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:36,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:53:36,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 06:53:36,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:36,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:53:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-29 06:53:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:36,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:36,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 06:53:36,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 06:53:36,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:36,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-29 06:53:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:36,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 213 proven. 330 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-29 06:53:36,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714001316] [2020-10-29 06:53:36,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:36,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:53:36,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621386552] [2020-10-29 06:53:36,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:53:36,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:36,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:53:36,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:53:36,450 INFO L87 Difference]: Start difference. First operand 59261 states and 68968 transitions. Second operand 9 states. [2020-10-29 06:53:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:44,896 INFO L93 Difference]: Finished difference Result 111112 states and 129763 transitions. [2020-10-29 06:53:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 06:53:44,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 534 [2020-10-29 06:53:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:45,103 INFO L225 Difference]: With dead ends: 111112 [2020-10-29 06:53:45,103 INFO L226 Difference]: Without dead ends: 70121 [2020-10-29 06:53:45,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-29 06:53:45,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70121 states. [2020-10-29 06:53:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70121 to 63837. [2020-10-29 06:53:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63837 states. [2020-10-29 06:53:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63837 states to 63837 states and 74029 transitions. [2020-10-29 06:53:46,612 INFO L78 Accepts]: Start accepts. Automaton has 63837 states and 74029 transitions. Word has length 534 [2020-10-29 06:53:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:46,613 INFO L481 AbstractCegarLoop]: Abstraction has 63837 states and 74029 transitions. [2020-10-29 06:53:46,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:53:46,613 INFO L276 IsEmpty]: Start isEmpty. Operand 63837 states and 74029 transitions. [2020-10-29 06:53:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-29 06:53:46,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:46,652 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:46,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:53:46,652 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:46,653 INFO L82 PathProgramCache]: Analyzing trace with hash -37689653, now seen corresponding path program 1 times [2020-10-29 06:53:46,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:46,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025742357] [2020-10-29 06:53:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:46,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking...