/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:07:38,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:07:38,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:07:38,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:07:38,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:07:38,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:07:38,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:07:38,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:07:38,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:07:38,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:07:38,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:07:38,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:07:38,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:07:38,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:07:38,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:07:38,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:07:38,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:07:38,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:07:38,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:07:38,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:07:38,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:07:38,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:07:38,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:07:38,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:07:38,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:07:38,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:07:38,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:07:38,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:07:38,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:07:38,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:07:38,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:07:38,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:07:38,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:07:38,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:07:38,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:07:38,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:07:38,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:07:38,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:07:38,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:07:38,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:07:38,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:07:38,583 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 [2020-10-27 00:07:38,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:07:38,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:07:38,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:07:38,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:07:38,618 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:07:38,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:07:38,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:07:38,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:07:38,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:07:38,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:07:38,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:07:38,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:07:38,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:07:38,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:07:38,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:07:38,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:07:38,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:07:38,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:07:38,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:07:38,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:07:38,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:07:38,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:07:38,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:07:38,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:07:38,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:07:38,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:07:38,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:07:38,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:07:38,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:07:38,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:07:39,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:07:39,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:07:39,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:07:39,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:07:39,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:07:39,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label13.c [2020-10-27 00:07:39,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adf4d1792/77491666c2834f1e9425a09701a1a74b/FLAG7d26e80e1 [2020-10-27 00:07:40,320 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:07:40,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label13.c [2020-10-27 00:07:40,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adf4d1792/77491666c2834f1e9425a09701a1a74b/FLAG7d26e80e1 [2020-10-27 00:07:40,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adf4d1792/77491666c2834f1e9425a09701a1a74b [2020-10-27 00:07:40,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:07:40,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:07:40,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:07:40,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:07:40,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:07:40,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:07:40" (1/1) ... [2020-10-27 00:07:40,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd763fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:40, skipping insertion in model container [2020-10-27 00:07:40,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:07:40" (1/1) ... [2020-10-27 00:07:40,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:07:41,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:07:42,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:07:42,314 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:07:43,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:07:43,035 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:07:43,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43 WrapperNode [2020-10-27 00:07:43,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:07:43,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:07:43,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:07:43,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:07:43,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43" (1/1) ... [2020-10-27 00:07:43,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43" (1/1) ... [2020-10-27 00:07:43,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43" (1/1) ... [2020-10-27 00:07:43,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43" (1/1) ... [2020-10-27 00:07:43,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43" (1/1) ... [2020-10-27 00:07:43,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43" (1/1) ... [2020-10-27 00:07:43,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43" (1/1) ... [2020-10-27 00:07:43,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:07:43,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:07:43,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:07:43,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:07:43,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43" (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 [2020-10-27 00:07:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:07:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:07:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:07:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:07:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:07:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:07:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:07:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:07:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:07:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:07:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:07:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:07:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:07:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:07:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:07:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:07:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:07:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:07:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:07:43,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:07:43,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:07:53,490 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:07:53,491 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:07:53,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:07:53 BoogieIcfgContainer [2020-10-27 00:07:53,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:07:53,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:07:53,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:07:53,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:07:53,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:07:40" (1/3) ... [2020-10-27 00:07:53,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202b2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:07:53, skipping insertion in model container [2020-10-27 00:07:53,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:07:43" (2/3) ... [2020-10-27 00:07:53,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202b2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:07:53, skipping insertion in model container [2020-10-27 00:07:53,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:07:53" (3/3) ... [2020-10-27 00:07:53,509 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label13.c [2020-10-27 00:07:53,525 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:07:53,534 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:07:53,553 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:07:53,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:07:53,595 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:07:53,595 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:07:53,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:07:53,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:07:53,596 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:07:53,596 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:07:53,596 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:07:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 00:07:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 00:07:53,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:07:53,645 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] [2020-10-27 00:07:53,646 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:07:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:07:53,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1503092067, now seen corresponding path program 1 times [2020-10-27 00:07:53,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:07:53,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146175787] [2020-10-27 00:07:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:07:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:54,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:54,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 00:07:54,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-27 00:07:54,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:07:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:07:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 00:07:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:07:54,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:07:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:54,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:54,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:07:54,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:07:54,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:07:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:07:54,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:07:54,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146175787] [2020-10-27 00:07:54,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:07:54,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:07:54,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691992730] [2020-10-27 00:07:54,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:07:54,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:07:54,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:07:54,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:07:54,923 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 5 states. [2020-10-27 00:08:12,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:08:12,844 INFO L93 Difference]: Finished difference Result 2207 states and 4069 transitions. [2020-10-27 00:08:12,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:08:12,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-27 00:08:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:08:12,884 INFO L225 Difference]: With dead ends: 2207 [2020-10-27 00:08:12,885 INFO L226 Difference]: Without dead ends: 1502 [2020-10-27 00:08:12,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:08:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-10-27 00:08:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1467. [2020-10-27 00:08:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-10-27 00:08:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2358 transitions. [2020-10-27 00:08:13,096 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2358 transitions. Word has length 37 [2020-10-27 00:08:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:08:13,098 INFO L481 AbstractCegarLoop]: Abstraction has 1467 states and 2358 transitions. [2020-10-27 00:08:13,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:08:13,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2358 transitions. [2020-10-27 00:08:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 00:08:13,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:08:13,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:08:13,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:08:13,114 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:08:13,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:08:13,120 INFO L82 PathProgramCache]: Analyzing trace with hash 233023470, now seen corresponding path program 1 times [2020-10-27 00:08:13,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:08:13,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12994342] [2020-10-27 00:08:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:08:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:13,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:15,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:15,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 00:08:15,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:08:15,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2020 [2020-10-27 00:08:15,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:08:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:08:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:08:15,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:08:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:08:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:15,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:15,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:08:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:08:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:08:15,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:08:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:08:15,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:08:15,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:08:15,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:08:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:15,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 00:08:15,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:08:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-27 00:08:15,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:08:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:08:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 00:08:15,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:08:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:08:15,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12994342] [2020-10-27 00:08:15,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:08:15,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:08:16,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961898965] [2020-10-27 00:08:16,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:08:16,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:08:16,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:08:16,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:08:16,006 INFO L87 Difference]: Start difference. First operand 1467 states and 2358 transitions. Second operand 7 states. [2020-10-27 00:08:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:08:30,774 INFO L93 Difference]: Finished difference Result 3855 states and 6333 transitions. [2020-10-27 00:08:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:08:30,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-27 00:08:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:08:30,795 INFO L225 Difference]: With dead ends: 3855 [2020-10-27 00:08:30,796 INFO L226 Difference]: Without dead ends: 2394 [2020-10-27 00:08:30,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:08:30,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2020-10-27 00:08:30,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 1915. [2020-10-27 00:08:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-27 00:08:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2635 transitions. [2020-10-27 00:08:30,893 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2635 transitions. Word has length 119 [2020-10-27 00:08:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:08:30,893 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2635 transitions. [2020-10-27 00:08:30,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:08:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2635 transitions. [2020-10-27 00:08:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-27 00:08:30,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:08:30,899 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:08:30,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:08:30,899 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:08:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:08:30,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1917722881, now seen corresponding path program 1 times [2020-10-27 00:08:30,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:08:30,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592672510] [2020-10-27 00:08:30,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:08:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:31,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:32,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:32,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:32,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 00:08:32,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:08:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1928 [2020-10-27 00:08:32,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:08:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:08:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:08:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:08:33,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:08:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:33,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:33,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:08:33,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:08:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:08:33,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:08:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:08:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:08:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:08:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:08:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:33,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:33,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:33,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:08:33,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:08:33,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 00:08:33,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:33,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:08:33,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:08:33,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:08:33,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:08:33,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:08:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:33,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:08:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:08:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 00:08:33,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:08:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:08:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:08:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:08:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 93 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:08:33,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592672510] [2020-10-27 00:08:33,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:08:33,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:08:33,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922717243] [2020-10-27 00:08:33,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:08:33,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:08:33,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:08:33,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:08:33,758 INFO L87 Difference]: Start difference. First operand 1915 states and 2635 transitions. Second operand 6 states. [2020-10-27 00:08:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:08:52,108 INFO L93 Difference]: Finished difference Result 5714 states and 8021 transitions. [2020-10-27 00:08:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:08:52,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2020-10-27 00:08:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:08:52,133 INFO L225 Difference]: With dead ends: 5714 [2020-10-27 00:08:52,133 INFO L226 Difference]: Without dead ends: 2904 [2020-10-27 00:08:52,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:08:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-10-27 00:08:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2841. [2020-10-27 00:08:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2841 states. [2020-10-27 00:08:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 3650 transitions. [2020-10-27 00:08:52,314 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 3650 transitions. Word has length 193 [2020-10-27 00:08:52,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:08:52,316 INFO L481 AbstractCegarLoop]: Abstraction has 2841 states and 3650 transitions. [2020-10-27 00:08:52,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:08:52,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 3650 transitions. [2020-10-27 00:08:52,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 00:08:52,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:08:52,321 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:08:52,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:08:52,322 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:08:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:08:52,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1302875182, now seen corresponding path program 1 times [2020-10-27 00:08:52,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:08:52,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364420785] [2020-10-27 00:08:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:08:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:52,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:54,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-27 00:08:54,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:08:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-10-27 00:08:54,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:08:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:08:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:08:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:08:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:08:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:54,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:54,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:08:54,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:08:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:08:54,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:08:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:08:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:08:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:08:54,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:08:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:54,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:54,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:08:54,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:08:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 00:08:54,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:08:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:08:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:08:54,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 00:08:54,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:08:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:08:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:08:54,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:08:54,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:08:54,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:08:54,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 00:08:54,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:08:54,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:08:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:08:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:08:54,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:08:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:08:54,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364420785] [2020-10-27 00:08:54,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:08:54,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:08:54,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505670974] [2020-10-27 00:08:54,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:08:54,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:08:54,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:08:54,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:08:54,946 INFO L87 Difference]: Start difference. First operand 2841 states and 3650 transitions. Second operand 7 states. [2020-10-27 00:09:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:09:11,646 INFO L93 Difference]: Finished difference Result 7536 states and 10108 transitions. [2020-10-27 00:09:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:09:11,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-27 00:09:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:09:11,682 INFO L225 Difference]: With dead ends: 7536 [2020-10-27 00:09:11,682 INFO L226 Difference]: Without dead ends: 4701 [2020-10-27 00:09:11,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:09:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2020-10-27 00:09:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 4683. [2020-10-27 00:09:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4683 states. [2020-10-27 00:09:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6019 transitions. [2020-10-27 00:09:11,851 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6019 transitions. Word has length 194 [2020-10-27 00:09:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:09:11,851 INFO L481 AbstractCegarLoop]: Abstraction has 4683 states and 6019 transitions. [2020-10-27 00:09:11,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:09:11,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6019 transitions. [2020-10-27 00:09:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 00:09:11,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:09:11,884 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:09:11,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:09:11,884 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:09:11,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:09:11,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1738282411, now seen corresponding path program 1 times [2020-10-27 00:09:11,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:09:11,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710167831] [2020-10-27 00:09:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:09:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:12,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:13,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:15,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:15,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-27 00:09:15,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:09:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3660 [2020-10-27 00:09:15,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:15,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 00:09:15,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:09:15,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-27 00:09:15,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:09:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:15,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:15,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:15,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:09:15,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:09:15,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:09:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:09:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:09:15,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:09:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:16,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:16,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:09:16,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-27 00:09:16,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:09:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:09:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:09:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:16,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:09:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:16,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:16,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:09:16,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-27 00:09:16,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:09:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:09:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:09:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 62 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:09:16,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710167831] [2020-10-27 00:09:16,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:09:16,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 00:09:16,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214186644] [2020-10-27 00:09:16,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:09:16,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:09:16,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:09:16,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:09:16,808 INFO L87 Difference]: Start difference. First operand 4683 states and 6019 transitions. Second operand 10 states. [2020-10-27 00:09:22,044 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2020-10-27 00:09:46,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:09:46,950 INFO L93 Difference]: Finished difference Result 12442 states and 16317 transitions. [2020-10-27 00:09:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 00:09:46,952 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-10-27 00:09:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:09:47,002 INFO L225 Difference]: With dead ends: 12442 [2020-10-27 00:09:47,002 INFO L226 Difference]: Without dead ends: 7765 [2020-10-27 00:09:47,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2020-10-27 00:09:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7765 states. [2020-10-27 00:09:47,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7765 to 7066. [2020-10-27 00:09:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7066 states. [2020-10-27 00:09:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7066 states to 7066 states and 9072 transitions. [2020-10-27 00:09:47,336 INFO L78 Accepts]: Start accepts. Automaton has 7066 states and 9072 transitions. Word has length 199 [2020-10-27 00:09:47,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:09:47,337 INFO L481 AbstractCegarLoop]: Abstraction has 7066 states and 9072 transitions. [2020-10-27 00:09:47,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 00:09:47,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7066 states and 9072 transitions. [2020-10-27 00:09:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 00:09:47,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:09:47,341 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:09:47,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:09:47,342 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:09:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:09:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1018935541, now seen corresponding path program 1 times [2020-10-27 00:09:47,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:09:47,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257565358] [2020-10-27 00:09:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:09:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:52,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:09:52,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:09:52,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 00:09:52,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:09:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:09:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:09:52,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:52,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:09:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:52,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:52,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:52,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:09:52,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:52,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:09:52,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:09:52,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:09:52,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:09:52,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:52,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:09:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:52,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:52,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:09:52,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:09:52,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:09:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:09:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:09:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:52,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:09:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:53,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:53,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 00:09:53,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:09:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-27 00:09:53,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:09:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:09:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 00:09:53,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 110 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:09:53,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257565358] [2020-10-27 00:09:53,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:09:53,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:09:53,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132007655] [2020-10-27 00:09:53,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:09:53,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:09:53,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:09:53,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:09:53,201 INFO L87 Difference]: Start difference. First operand 7066 states and 9072 transitions. Second operand 6 states. [2020-10-27 00:10:07,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:10:07,379 INFO L93 Difference]: Finished difference Result 14166 states and 18225 transitions. [2020-10-27 00:10:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:10:07,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-10-27 00:10:07,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:10:07,429 INFO L225 Difference]: With dead ends: 14166 [2020-10-27 00:10:07,429 INFO L226 Difference]: Without dead ends: 7106 [2020-10-27 00:10:07,446 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 [2020-10-27 00:10:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2020-10-27 00:10:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 6610. [2020-10-27 00:10:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6610 states. [2020-10-27 00:10:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 8557 transitions. [2020-10-27 00:10:07,652 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 8557 transitions. Word has length 210 [2020-10-27 00:10:07,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:10:07,653 INFO L481 AbstractCegarLoop]: Abstraction has 6610 states and 8557 transitions. [2020-10-27 00:10:07,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:10:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 8557 transitions. [2020-10-27 00:10:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-27 00:10:07,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:10:07,660 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:10:07,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:10:07,660 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:10:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:10:07,661 INFO L82 PathProgramCache]: Analyzing trace with hash -964718577, now seen corresponding path program 1 times [2020-10-27 00:10:07,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:10:07,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14163547] [2020-10-27 00:10:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:10:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:09,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:12,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:12,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-27 00:10:12,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:10:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 00:10:12,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 00:10:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:10:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-27 00:10:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:12,945 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:10:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:10:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:12,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:12,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:10:12,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:10:12,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:10:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:10:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:10:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:10:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:13,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:13,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:10:13,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 00:10:13,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:10:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:10:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:10:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:13,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:10:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:13,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:13,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 00:10:13,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 00:10:13,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:10:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:10:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 00:10:13,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:13,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 00:10:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:13,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:13,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:10:13,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:10:13,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:10:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 00:10:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:10:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 92 proven. 216 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 00:10:13,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14163547] [2020-10-27 00:10:13,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:10:13,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:10:13,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748258209] [2020-10-27 00:10:13,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:10:13,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:10:13,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:10:13,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:10:13,977 INFO L87 Difference]: Start difference. First operand 6610 states and 8557 transitions. Second operand 10 states. [2020-10-27 00:10:14,249 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-27 00:10:15,271 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-27 00:10:22,815 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-27 00:10:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:10:43,688 INFO L93 Difference]: Finished difference Result 18652 states and 25817 transitions. [2020-10-27 00:10:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 00:10:43,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 277 [2020-10-27 00:10:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:10:43,734 INFO L225 Difference]: With dead ends: 18652 [2020-10-27 00:10:43,734 INFO L226 Difference]: Without dead ends: 11582 [2020-10-27 00:10:43,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2020-10-27 00:10:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11582 states. [2020-10-27 00:10:44,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11582 to 11145. [2020-10-27 00:10:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11145 states. [2020-10-27 00:10:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11145 states to 11145 states and 13658 transitions. [2020-10-27 00:10:44,166 INFO L78 Accepts]: Start accepts. Automaton has 11145 states and 13658 transitions. Word has length 277 [2020-10-27 00:10:44,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:10:44,166 INFO L481 AbstractCegarLoop]: Abstraction has 11145 states and 13658 transitions. [2020-10-27 00:10:44,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 00:10:44,167 INFO L276 IsEmpty]: Start isEmpty. Operand 11145 states and 13658 transitions. [2020-10-27 00:10:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 00:10:44,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:10:44,174 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:10:44,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:10:44,175 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:10:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:10:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1950848648, now seen corresponding path program 1 times [2020-10-27 00:10:44,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:10:44,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366891179] [2020-10-27 00:10:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:10:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:44,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:44,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:47,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:48,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:48,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-27 00:10:48,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:10:48,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4279 [2020-10-27 00:10:48,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 00:10:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:10:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-27 00:10:48,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:48,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:10:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:48,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:48,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:10:48,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:10:48,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:10:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:10:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:10:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:10:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:48,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:49,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:49,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:10:49,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:49,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-27 00:10:49,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:10:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:10:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:10:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:49,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:10:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:49,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:49,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 00:10:49,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 00:10:49,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:10:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:10:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 00:10:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:49,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 00:10:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:49,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:49,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:10:49,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:49,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 00:10:49,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:10:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:10:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:10:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 225 proven. 91 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 00:10:49,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366891179] [2020-10-27 00:10:49,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:10:49,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:10:49,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834617434] [2020-10-27 00:10:49,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 00:10:49,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:10:49,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 00:10:49,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:10:49,913 INFO L87 Difference]: Start difference. First operand 11145 states and 13658 transitions. Second operand 11 states. [2020-10-27 00:10:50,195 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 00:10:59,329 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-27 00:11:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:11:19,175 INFO L93 Difference]: Finished difference Result 26243 states and 34143 transitions. [2020-10-27 00:11:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 00:11:19,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2020-10-27 00:11:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:11:19,247 INFO L225 Difference]: With dead ends: 26243 [2020-10-27 00:11:19,248 INFO L226 Difference]: Without dead ends: 15525 [2020-10-27 00:11:19,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-27 00:11:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15525 states. [2020-10-27 00:11:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15525 to 14247. [2020-10-27 00:11:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14247 states. [2020-10-27 00:11:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14247 states to 14247 states and 17177 transitions. [2020-10-27 00:11:19,701 INFO L78 Accepts]: Start accepts. Automaton has 14247 states and 17177 transitions. Word has length 285 [2020-10-27 00:11:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:11:19,702 INFO L481 AbstractCegarLoop]: Abstraction has 14247 states and 17177 transitions. [2020-10-27 00:11:19,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 00:11:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 14247 states and 17177 transitions. [2020-10-27 00:11:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-27 00:11:19,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:11:19,710 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:11:19,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:11:19,711 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:11:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:11:19,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1274040567, now seen corresponding path program 1 times [2020-10-27 00:11:19,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:11:19,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470791095] [2020-10-27 00:11:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:11:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:19,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:20,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:24,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:24,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:24,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-27 00:11:24,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:11:24,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 00:11:24,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:11:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:11:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 00:11:24,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:25,011 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:11:25,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:11:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:25,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:25,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:25,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:11:25,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:11:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:11:25,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:11:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:11:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:11:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:25,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:11:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:25,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:25,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:11:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:11:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:11:25,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:11:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:11:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:11:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:11:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:25,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 00:11:25,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:11:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 00:11:25,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:11:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:11:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 00:11:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 00:11:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking...