/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/Problem04_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:09:41,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:09:41,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:09:41,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:09:41,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:09:41,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:09:41,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:09:41,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:09:41,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:09:41,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:09:41,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:09:41,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:09:41,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:09:41,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:09:41,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:09:41,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:09:41,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:09:41,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:09:41,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:09:41,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:09:41,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:09:41,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:09:41,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:09:41,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:09:41,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:09:41,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:09:41,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:09:41,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:09:41,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:09:41,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:09:41,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:09:41,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:09:41,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:09:41,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:09:41,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:09:41,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:09:41,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:09:41,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:09:41,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:09:41,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:09:41,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:09:41,696 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 [2020-10-26 21:09:41,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:09:41,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:09:41,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:09:41,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:09:41,761 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:09:41,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:09:41,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:09:41,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:09:41,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:09:41,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:09:41,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:09:41,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:09:41,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:09:41,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:09:41,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:09:41,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:09:41,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:09:41,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:09:41,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:09:41,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:09:41,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:09:41,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:09:41,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:09:41,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:09:41,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:09:41,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:09:41,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:09:41,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:09:41,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:09:41,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:09:42,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:09:42,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:09:42,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:09:42,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:09:42,236 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:09:42,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label59.c [2020-10-26 21:09:42,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c24d5932/6302b89760b14e899b673c9fd13c9f43/FLAG649b3489b [2020-10-26 21:09:43,351 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:09:43,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label59.c [2020-10-26 21:09:43,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c24d5932/6302b89760b14e899b673c9fd13c9f43/FLAG649b3489b [2020-10-26 21:09:43,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c24d5932/6302b89760b14e899b673c9fd13c9f43 [2020-10-26 21:09:43,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:09:43,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:09:43,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:09:43,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:09:43,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:09:43,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:09:43" (1/1) ... [2020-10-26 21:09:43,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4d5ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:43, skipping insertion in model container [2020-10-26 21:09:43,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:09:43" (1/1) ... [2020-10-26 21:09:43,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:09:44,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:09:45,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:09:45,437 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:09:46,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:09:46,266 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:09:46,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46 WrapperNode [2020-10-26 21:09:46,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:09:46,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:09:46,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:09:46,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:09:46,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46" (1/1) ... [2020-10-26 21:09:46,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46" (1/1) ... [2020-10-26 21:09:46,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46" (1/1) ... [2020-10-26 21:09:46,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46" (1/1) ... [2020-10-26 21:09:46,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46" (1/1) ... [2020-10-26 21:09:46,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46" (1/1) ... [2020-10-26 21:09:46,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46" (1/1) ... [2020-10-26 21:09:46,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:09:46,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:09:46,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:09:46,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:09:46,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46" (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 [2020-10-26 21:09:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:09:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:09:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:09:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:09:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:09:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:09:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:09:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:09:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:09:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:09:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:09:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:09:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:09:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:09:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:09:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:09:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:09:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:09:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:09:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:09:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:09:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:09:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:09:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:09:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:09:51,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:09:51,754 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:09:51,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:09:51 BoogieIcfgContainer [2020-10-26 21:09:51,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:09:51,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:09:51,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:09:51,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:09:51,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:09:43" (1/3) ... [2020-10-26 21:09:51,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbc6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:09:51, skipping insertion in model container [2020-10-26 21:09:51,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:46" (2/3) ... [2020-10-26 21:09:51,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbc6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:09:51, skipping insertion in model container [2020-10-26 21:09:51,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:09:51" (3/3) ... [2020-10-26 21:09:51,770 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label59.c [2020-10-26 21:09:51,783 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:09:51,795 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:09:51,810 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:09:51,861 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:09:51,862 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:09:51,862 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:09:51,862 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:09:51,862 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:09:51,862 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:09:51,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:09:51,863 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:09:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:09:51,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2020-10-26 21:09:51,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:51,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:51,979 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:51,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:51,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1629783080, now seen corresponding path program 1 times [2020-10-26 21:09:52,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:52,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238392819] [2020-10-26 21:09:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:58,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:58,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 819 [2020-10-26 21:09:58,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:09:58,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5159 [2020-10-26 21:09:58,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:09:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:09:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 810 [2020-10-26 21:09:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 21:09:58,979 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:09:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:59,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:59,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:59,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:59,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:09:59,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:09:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:10:00,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238392819] [2020-10-26 21:10:00,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:10:00,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:10:00,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897648319] [2020-10-26 21:10:00,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:10:00,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:10:00,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:10:00,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:10:00,264 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 21:10:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:10:10,525 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-26 21:10:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:10:10,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 803 [2020-10-26 21:10:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:10:10,586 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 21:10:10,586 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 21:10:10,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:10:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 21:10:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-26 21:10:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-26 21:10:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2956 transitions. [2020-10-26 21:10:10,804 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2956 transitions. Word has length 803 [2020-10-26 21:10:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:10:10,808 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 2956 transitions. [2020-10-26 21:10:10,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:10:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2956 transitions. [2020-10-26 21:10:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-26 21:10:10,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:10:10,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:10:10,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:10:10,839 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:10:10,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:10:10,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1918713107, now seen corresponding path program 1 times [2020-10-26 21:10:10,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:10:10,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811233190] [2020-10-26 21:10:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:10:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:16,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:16,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 830 [2020-10-26 21:10:16,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:10:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-26 21:10:16,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:10:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 21:10:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 21:10:16,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:16,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:16,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:16,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:10:16,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:16,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:16,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:16,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:16,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:10:16,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 21:10:16,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:10:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:10:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:10:17,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811233190] [2020-10-26 21:10:17,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:10:17,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:10:17,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963533191] [2020-10-26 21:10:17,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:10:17,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:10:17,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:10:17,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:10:17,164 INFO L87 Difference]: Start difference. First operand 1688 states and 2956 transitions. Second operand 8 states. [2020-10-26 21:10:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:10:30,203 INFO L93 Difference]: Finished difference Result 5157 states and 9094 transitions. [2020-10-26 21:10:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:10:30,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 812 [2020-10-26 21:10:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:10:30,229 INFO L225 Difference]: With dead ends: 5157 [2020-10-26 21:10:30,229 INFO L226 Difference]: Without dead ends: 3475 [2020-10-26 21:10:30,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:10:30,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-10-26 21:10:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3422. [2020-10-26 21:10:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3422 states. [2020-10-26 21:10:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 5719 transitions. [2020-10-26 21:10:30,416 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 5719 transitions. Word has length 812 [2020-10-26 21:10:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:10:30,417 INFO L481 AbstractCegarLoop]: Abstraction has 3422 states and 5719 transitions. [2020-10-26 21:10:30,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:10:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 5719 transitions. [2020-10-26 21:10:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-26 21:10:30,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:10:30,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:10:30,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:10:30,454 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:10:30,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:10:30,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1949507494, now seen corresponding path program 1 times [2020-10-26 21:10:30,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:10:30,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519382262] [2020-10-26 21:10:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:10:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:35,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:35,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-26 21:10:35,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:10:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 21:10:35,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:10:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:10:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:35,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:35,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:35,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:35,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:35,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:10:35,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:35,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:35,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:35,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 21:10:35,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:10:35,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 21:10:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:10:36,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519382262] [2020-10-26 21:10:36,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:10:36,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:10:36,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059119565] [2020-10-26 21:10:36,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:10:36,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:10:36,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:10:36,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:10:36,423 INFO L87 Difference]: Start difference. First operand 3422 states and 5719 transitions. Second operand 7 states. [2020-10-26 21:10:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:10:47,747 INFO L93 Difference]: Finished difference Result 8670 states and 14510 transitions. [2020-10-26 21:10:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:10:47,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 813 [2020-10-26 21:10:47,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:10:47,776 INFO L225 Difference]: With dead ends: 8670 [2020-10-26 21:10:47,777 INFO L226 Difference]: Without dead ends: 5254 [2020-10-26 21:10:47,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:10:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5254 states. [2020-10-26 21:10:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5254 to 5212. [2020-10-26 21:10:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5212 states. [2020-10-26 21:10:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5212 states to 5212 states and 7904 transitions. [2020-10-26 21:10:47,979 INFO L78 Accepts]: Start accepts. Automaton has 5212 states and 7904 transitions. Word has length 813 [2020-10-26 21:10:47,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:10:47,979 INFO L481 AbstractCegarLoop]: Abstraction has 5212 states and 7904 transitions. [2020-10-26 21:10:47,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:10:47,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5212 states and 7904 transitions. [2020-10-26 21:10:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-26 21:10:48,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:10:48,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:10:48,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:10:48,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:10:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:10:48,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1939281399, now seen corresponding path program 1 times [2020-10-26 21:10:48,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:10:48,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681503623] [2020-10-26 21:10:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:10:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:53,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:53,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-26 21:10:53,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:10:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-26 21:10:53,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:10:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:10:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:53,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:53,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:53,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:53,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:53,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 21:10:53,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:53,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:53,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:53,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:10:53,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:53,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:53,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:10:53,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:53,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 21:10:53,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:10:53,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:10:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:10:54,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681503623] [2020-10-26 21:10:54,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:10:54,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:10:54,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11979713] [2020-10-26 21:10:54,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:10:54,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:10:54,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:10:54,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:10:54,090 INFO L87 Difference]: Start difference. First operand 5212 states and 7904 transitions. Second operand 7 states. [2020-10-26 21:11:06,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:11:06,627 INFO L93 Difference]: Finished difference Result 15916 states and 24967 transitions. [2020-10-26 21:11:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:11:06,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 814 [2020-10-26 21:11:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:11:06,680 INFO L225 Difference]: With dead ends: 15916 [2020-10-26 21:11:06,680 INFO L226 Difference]: Without dead ends: 10710 [2020-10-26 21:11:06,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:11:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10710 states. [2020-10-26 21:11:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10710 to 10589. [2020-10-26 21:11:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10589 states. [2020-10-26 21:11:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 14890 transitions. [2020-10-26 21:11:07,061 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 14890 transitions. Word has length 814 [2020-10-26 21:11:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:11:07,062 INFO L481 AbstractCegarLoop]: Abstraction has 10589 states and 14890 transitions. [2020-10-26 21:11:07,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:11:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 14890 transitions. [2020-10-26 21:11:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-26 21:11:07,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:11:07,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:11:07,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:11:07,104 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:11:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:11:07,105 INFO L82 PathProgramCache]: Analyzing trace with hash -113251961, now seen corresponding path program 1 times [2020-10-26 21:11:07,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:11:07,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530141717] [2020-10-26 21:11:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:11:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:12,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:12,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-26 21:11:12,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:11:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-26 21:11:12,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 21:11:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:11:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-26 21:11:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:15,094 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-26 21:11:15,381 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 57 [2020-10-26 21:11:15,693 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 58 [2020-10-26 21:11:16,111 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 60 [2020-10-26 21:11:16,564 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 56 [2020-10-26 21:11:16,916 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 53 [2020-10-26 21:11:17,169 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 38 [2020-10-26 21:11:17,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:11:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:17,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:17,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:17,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:11:17,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:17,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:11:17,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:11:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:11:17,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:17,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:11:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:17,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:17,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:11:17,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:17,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 21:11:17,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:17,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:11:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:11:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:11:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:11:23,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530141717] [2020-10-26 21:11:23,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:11:23,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 21:11:23,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148573546] [2020-10-26 21:11:23,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 21:11:23,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:11:23,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 21:11:23,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-26 21:11:23,179 INFO L87 Difference]: Start difference. First operand 10589 states and 14890 transitions. Second operand 19 states. [2020-10-26 21:11:23,522 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-26 21:11:23,766 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-26 21:11:24,425 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 152 [2020-10-26 21:11:26,880 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 149 [2020-10-26 21:11:28,152 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 146 [2020-10-26 21:11:29,489 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 138 [2020-10-26 21:11:29,954 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-26 21:11:30,272 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2020-10-26 21:11:31,326 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-26 21:11:35,231 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-26 21:11:35,452 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-26 21:11:40,221 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-26 21:11:40,377 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-26 21:11:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:11:41,961 INFO L93 Difference]: Finished difference Result 21882 states and 30809 transitions. [2020-10-26 21:11:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 21:11:41,962 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 822 [2020-10-26 21:11:41,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:11:42,013 INFO L225 Difference]: With dead ends: 21882 [2020-10-26 21:11:42,013 INFO L226 Difference]: Without dead ends: 11299 [2020-10-26 21:11:42,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-26 21:11:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11299 states. [2020-10-26 21:11:42,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11299 to 11285. [2020-10-26 21:11:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11285 states. [2020-10-26 21:11:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11285 states to 11285 states and 15610 transitions. [2020-10-26 21:11:42,544 INFO L78 Accepts]: Start accepts. Automaton has 11285 states and 15610 transitions. Word has length 822 [2020-10-26 21:11:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:11:42,546 INFO L481 AbstractCegarLoop]: Abstraction has 11285 states and 15610 transitions. [2020-10-26 21:11:42,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 21:11:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 11285 states and 15610 transitions. [2020-10-26 21:11:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-26 21:11:42,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:11:42,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:11:42,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:11:42,584 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:11:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:11:42,585 INFO L82 PathProgramCache]: Analyzing trace with hash -877896326, now seen corresponding path program 1 times [2020-10-26 21:11:42,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:11:42,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304298120] [2020-10-26 21:11:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:11:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:42,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:47,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:47,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 847 [2020-10-26 21:11:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:11:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-26 21:11:47,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:11:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-26 21:11:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 807 [2020-10-26 21:11:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:11:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:48,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:48,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:48,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:11:48,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:48,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:11:48,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:11:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:11:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:48,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:11:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:48,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:48,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:48,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:11:48,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:11:48,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:11:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 21:11:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:11:49,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304298120] [2020-10-26 21:11:49,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:11:49,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:11:49,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285323588] [2020-10-26 21:11:49,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 21:11:49,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:11:49,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 21:11:49,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:11:49,106 INFO L87 Difference]: Start difference. First operand 11285 states and 15610 transitions. Second operand 5 states. [2020-10-26 21:11:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:11:59,669 INFO L93 Difference]: Finished difference Result 32870 states and 47129 transitions. [2020-10-26 21:11:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:11:59,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 829 [2020-10-26 21:11:59,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:11:59,765 INFO L225 Difference]: With dead ends: 32870 [2020-10-26 21:11:59,765 INFO L226 Difference]: Without dead ends: 21591 [2020-10-26 21:11:59,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:11:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21591 states. [2020-10-26 21:12:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21591 to 21585. [2020-10-26 21:12:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21585 states. [2020-10-26 21:12:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21585 states to 21585 states and 29974 transitions. [2020-10-26 21:12:00,480 INFO L78 Accepts]: Start accepts. Automaton has 21585 states and 29974 transitions. Word has length 829 [2020-10-26 21:12:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:12:00,482 INFO L481 AbstractCegarLoop]: Abstraction has 21585 states and 29974 transitions. [2020-10-26 21:12:00,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 21:12:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 21585 states and 29974 transitions. [2020-10-26 21:12:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2020-10-26 21:12:00,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:12:00,548 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:12:00,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:12:00,549 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:12:00,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:12:00,549 INFO L82 PathProgramCache]: Analyzing trace with hash 270173272, now seen corresponding path program 1 times [2020-10-26 21:12:00,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:12:00,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498536390] [2020-10-26 21:12:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:12:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:00,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:05,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 857 [2020-10-26 21:12:05,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:12:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-26 21:12:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:12:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:12:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 21:12:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:06,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:12:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:06,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:06,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:12:06,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:12:06,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:12:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:12:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:06,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:12:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:06,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:06,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:06,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:12:06,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:12:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 21:12:06,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:12:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:12:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:12:06,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:12:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:06,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:06,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:06,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:12:06,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:12:06,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:12:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:12:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:12:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:12:06,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498536390] [2020-10-26 21:12:06,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:12:06,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:12:06,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483286955] [2020-10-26 21:12:06,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:12:06,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:12:06,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:12:06,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:12:06,655 INFO L87 Difference]: Start difference. First operand 21585 states and 29974 transitions. Second operand 8 states. [2020-10-26 21:12:16,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:12:16,886 INFO L93 Difference]: Finished difference Result 43439 states and 62305 transitions. [2020-10-26 21:12:16,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 21:12:16,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 837 [2020-10-26 21:12:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:12:16,971 INFO L225 Difference]: With dead ends: 43439 [2020-10-26 21:12:16,971 INFO L226 Difference]: Without dead ends: 21860 [2020-10-26 21:12:17,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:12:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21860 states. [2020-10-26 21:12:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21860 to 21682. [2020-10-26 21:12:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21682 states. [2020-10-26 21:12:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21682 states to 21682 states and 30201 transitions. [2020-10-26 21:12:17,598 INFO L78 Accepts]: Start accepts. Automaton has 21682 states and 30201 transitions. Word has length 837 [2020-10-26 21:12:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:12:17,598 INFO L481 AbstractCegarLoop]: Abstraction has 21682 states and 30201 transitions. [2020-10-26 21:12:17,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:12:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 21682 states and 30201 transitions. [2020-10-26 21:12:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2020-10-26 21:12:17,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:12:17,652 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:12:17,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:12:17,652 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:12:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:12:17,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1572959956, now seen corresponding path program 1 times [2020-10-26 21:12:17,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:12:17,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293210994] [2020-10-26 21:12:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:12:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:21,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 859 [2020-10-26 21:12:21,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:12:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3463 [2020-10-26 21:12:21,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:12:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:12:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 807 [2020-10-26 21:12:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:21,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:12:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:21,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:21,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:12:21,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:21,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:12:21,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:21,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:21,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:12:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:21,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:21,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:12:21,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:12:21,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:12:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:21,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:21,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:12:21,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:12:21,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:12:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:12:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 21:12:22,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293210994] [2020-10-26 21:12:22,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:12:22,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:12:22,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180518054] [2020-10-26 21:12:22,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 21:12:22,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:12:22,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 21:12:22,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:12:22,614 INFO L87 Difference]: Start difference. First operand 21682 states and 30201 transitions. Second operand 6 states. [2020-10-26 21:12:38,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:12:38,840 INFO L93 Difference]: Finished difference Result 81187 states and 117645 transitions. [2020-10-26 21:12:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 21:12:38,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 839 [2020-10-26 21:12:38,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:12:39,062 INFO L225 Difference]: With dead ends: 81187 [2020-10-26 21:12:39,063 INFO L226 Difference]: Without dead ends: 59511 [2020-10-26 21:12:39,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:12:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59511 states. [2020-10-26 21:12:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59511 to 59511. [2020-10-26 21:12:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59511 states. [2020-10-26 21:12:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59511 states to 59511 states and 76711 transitions. [2020-10-26 21:12:40,896 INFO L78 Accepts]: Start accepts. Automaton has 59511 states and 76711 transitions. Word has length 839 [2020-10-26 21:12:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:12:40,897 INFO L481 AbstractCegarLoop]: Abstraction has 59511 states and 76711 transitions. [2020-10-26 21:12:40,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 21:12:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 59511 states and 76711 transitions. [2020-10-26 21:12:41,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-26 21:12:41,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:12:41,421 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:12:41,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:12:41,422 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:12:41,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:12:41,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1533401197, now seen corresponding path program 1 times [2020-10-26 21:12:41,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:12:41,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277108189] [2020-10-26 21:12:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:12:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:41,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:42,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:46,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:46,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-26 21:12:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:12:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-26 21:12:46,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:12:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:12:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-26 21:12:46,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:46,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:12:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:46,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:46,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:12:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:12:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:12:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:12:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:46,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:12:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:46,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:46,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:46,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:12:46,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 21:12:46,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:12:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:12:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-26 21:12:46,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:46,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 21:12:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:47,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:47,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 21:12:47,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 21:12:47,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-26 21:12:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-26 21:12:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:47,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:47,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:47,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 21:12:47,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:47,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 21:12:47,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-26 21:12:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 222 proven. 107 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-26 21:12:47,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277108189] [2020-10-26 21:12:47,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:12:47,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:12:47,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269603437] [2020-10-26 21:12:47,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:12:47,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:12:47,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:12:47,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:12:47,714 INFO L87 Difference]: Start difference. First operand 59511 states and 76711 transitions. Second operand 7 states. [2020-10-26 21:13:00,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:13:00,551 INFO L93 Difference]: Finished difference Result 158546 states and 210776 transitions. [2020-10-26 21:13:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:13:00,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1034 [2020-10-26 21:13:00,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:13:00,941 INFO L225 Difference]: With dead ends: 158546 [2020-10-26 21:13:00,941 INFO L226 Difference]: Without dead ends: 98191 [2020-10-26 21:13:01,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:13:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98191 states. [2020-10-26 21:13:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98191 to 87133. [2020-10-26 21:13:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87133 states. [2020-10-26 21:13:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87133 states to 87133 states and 108862 transitions. [2020-10-26 21:13:04,188 INFO L78 Accepts]: Start accepts. Automaton has 87133 states and 108862 transitions. Word has length 1034 [2020-10-26 21:13:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:13:04,189 INFO L481 AbstractCegarLoop]: Abstraction has 87133 states and 108862 transitions. [2020-10-26 21:13:04,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:13:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 87133 states and 108862 transitions. [2020-10-26 21:13:04,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2020-10-26 21:13:04,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:13:04,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:13:04,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 21:13:04,327 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:13:04,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:13:04,328 INFO L82 PathProgramCache]: Analyzing trace with hash -14458160, now seen corresponding path program 1 times [2020-10-26 21:13:04,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:13:04,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587588931] [2020-10-26 21:13:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:13:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:13:04,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:13:05,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:13:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:13:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:13:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1111 [2020-10-26 21:13:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:13:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-26 21:13:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:13:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 21:13:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:13:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 293 [2020-10-26 21:13:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0