/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=DEEPEST --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/Problem12_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:44:05,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:44:05,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:44:05,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:44:05,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:44:05,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:44:05,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:44:05,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:44:05,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:44:05,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:44:05,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:44:05,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:44:05,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:44:05,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:44:05,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:44:05,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:44:05,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:44:05,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:44:05,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:44:05,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:44:05,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:44:05,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:44:05,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:44:05,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:44:05,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:44:05,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:44:05,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:44:05,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:44:05,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:44:05,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:44:05,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:44:05,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:44:05,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:44:05,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:44:05,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:44:05,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:44:05,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:44:05,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:44:05,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:44:05,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:44:05,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:44:05,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:44:05,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:44:05,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:44:05,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:44:05,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:44:05,709 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:44:05,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:44:05,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:44:05,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:44:05,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:44:05,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:44:05,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:44:05,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:44:05,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:44:05,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:44:05,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:44:05,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:44:05,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:44:05,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:44:05,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:44:05,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:44:05,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:44:05,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:44:05,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:44:05,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:44:05,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:44:05,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:44:05,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:44:05,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:44:05,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:44:05,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:44:06,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:44:06,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:44:06,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:44:06,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:44:06,199 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:44:06,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26.c [2020-10-27 17:44:06,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b455e3e5/a4035a30f6b348d792b73ff3ae7db699/FLAGa0190e48e [2020-10-27 17:44:07,507 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:44:07,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label26.c [2020-10-27 17:44:07,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b455e3e5/a4035a30f6b348d792b73ff3ae7db699/FLAGa0190e48e [2020-10-27 17:44:07,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b455e3e5/a4035a30f6b348d792b73ff3ae7db699 [2020-10-27 17:44:07,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:44:07,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:44:07,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:44:07,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:44:07,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:44:07,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:44:07" (1/1) ... [2020-10-27 17:44:07,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242517b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:07, skipping insertion in model container [2020-10-27 17:44:07,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:44:07" (1/1) ... [2020-10-27 17:44:07,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:44:08,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:44:09,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:44:09,585 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:44:10,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:44:10,557 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:44:10,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10 WrapperNode [2020-10-27 17:44:10,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:44:10,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:44:10,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:44:10,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:44:10,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10" (1/1) ... [2020-10-27 17:44:10,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10" (1/1) ... [2020-10-27 17:44:10,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10" (1/1) ... [2020-10-27 17:44:10,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10" (1/1) ... [2020-10-27 17:44:10,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10" (1/1) ... [2020-10-27 17:44:10,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10" (1/1) ... [2020-10-27 17:44:10,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10" (1/1) ... [2020-10-27 17:44:10,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:44:10,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:44:10,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:44:10,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:44:10,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:44:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:44:11,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:44:11,076 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:44:11,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:44:11,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:44:11,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:44:11,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:44:11,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:44:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:44:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:44:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:44:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:44:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:44:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:44:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:44:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:44:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:44:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:44:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:44:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:44:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:44:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:44:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:44:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:44:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:44:17,289 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:44:17,290 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:44:17,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:44:17 BoogieIcfgContainer [2020-10-27 17:44:17,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:44:17,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:44:17,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:44:17,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:44:17,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:44:07" (1/3) ... [2020-10-27 17:44:17,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9d7ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:44:17, skipping insertion in model container [2020-10-27 17:44:17,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:10" (2/3) ... [2020-10-27 17:44:17,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9d7ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:44:17, skipping insertion in model container [2020-10-27 17:44:17,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:44:17" (3/3) ... [2020-10-27 17:44:17,305 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label26.c [2020-10-27 17:44:17,320 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:44:17,327 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:44:17,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:44:17,389 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:44:17,389 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:44:17,389 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:44:17,389 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:44:17,389 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:44:17,389 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:44:17,390 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:44:17,390 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:44:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:44:17,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 17:44:17,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:17,445 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] [2020-10-27 17:44:17,445 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:17,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:17,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1526391596, now seen corresponding path program 1 times [2020-10-27 17:44:17,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:17,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192885143] [2020-10-27 17:44:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:18,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:18,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 17:44:18,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-27 17:44:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:44:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:44:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 17:44:18,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:44:18,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:18,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:18,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:18,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:18,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 17:44:18,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:44:18,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:44:18,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192885143] [2020-10-27 17:44:18,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:44:18,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:44:18,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859892573] [2020-10-27 17:44:18,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:44:18,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:18,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:44:18,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:44:18,624 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:44:33,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:33,996 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-27 17:44:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:33,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-27 17:44:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:34,034 INFO L225 Difference]: With dead ends: 2492 [2020-10-27 17:44:34,035 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:44:34,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:44:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-27 17:44:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-27 17:44:34,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-27 17:44:34,260 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 52 [2020-10-27 17:44:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:34,262 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-27 17:44:34,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:44:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-27 17:44:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 17:44:34,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:34,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:44:34,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:44:34,282 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:34,284 INFO L82 PathProgramCache]: Analyzing trace with hash 14172642, now seen corresponding path program 1 times [2020-10-27 17:44:34,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:34,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479053323] [2020-10-27 17:44:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:34,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:35,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:35,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 17:44:35,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:44:35,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1570 [2020-10-27 17:44:35,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 17:44:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 17:44:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:44:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:36,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:36,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:36,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:36,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:44:36,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:36,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:36,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 17:44:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:36,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:44:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 17:44:36,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 17:44:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:44:36,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479053323] [2020-10-27 17:44:36,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:36,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:44:36,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265642053] [2020-10-27 17:44:36,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:44:36,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:36,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:44:36,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:36,356 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 5 states. [2020-10-27 17:44:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:51,851 INFO L93 Difference]: Finished difference Result 4688 states and 7522 transitions. [2020-10-27 17:44:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:51,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-27 17:44:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:51,874 INFO L225 Difference]: With dead ends: 4688 [2020-10-27 17:44:51,874 INFO L226 Difference]: Without dead ends: 3129 [2020-10-27 17:44:51,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:44:51,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2020-10-27 17:44:52,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3121. [2020-10-27 17:44:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2020-10-27 17:44:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4528 transitions. [2020-10-27 17:44:52,042 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4528 transitions. Word has length 131 [2020-10-27 17:44:52,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:52,044 INFO L481 AbstractCegarLoop]: Abstraction has 3121 states and 4528 transitions. [2020-10-27 17:44:52,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:44:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4528 transitions. [2020-10-27 17:44:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 17:44:52,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:52,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:44:52,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:44:52,063 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:52,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1501120302, now seen corresponding path program 1 times [2020-10-27 17:44:52,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:52,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663563571] [2020-10-27 17:44:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 17:44:53,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:44:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1255 [2020-10-27 17:44:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 17:44:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 17:44:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:53,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:53,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:53,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:53,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:53,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:44:53,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:53,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:53,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 17:44:53,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:53,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 17:44:53,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 17:44:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:44:53,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663563571] [2020-10-27 17:44:53,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:53,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:44:53,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393022571] [2020-10-27 17:44:53,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:44:53,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:53,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:44:53,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:53,756 INFO L87 Difference]: Start difference. First operand 3121 states and 4528 transitions. Second operand 5 states. [2020-10-27 17:45:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:09,435 INFO L93 Difference]: Finished difference Result 9353 states and 13759 transitions. [2020-10-27 17:45:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:09,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 17:45:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:09,472 INFO L225 Difference]: With dead ends: 9353 [2020-10-27 17:45:09,473 INFO L226 Difference]: Without dead ends: 6238 [2020-10-27 17:45:09,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:45:09,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-10-27 17:45:09,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6230. [2020-10-27 17:45:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2020-10-27 17:45:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 8208 transitions. [2020-10-27 17:45:09,682 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 8208 transitions. Word has length 139 [2020-10-27 17:45:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:09,683 INFO L481 AbstractCegarLoop]: Abstraction has 6230 states and 8208 transitions. [2020-10-27 17:45:09,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 8208 transitions. [2020-10-27 17:45:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 17:45:09,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:09,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:45:09,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:45:09,687 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:09,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2097021308, now seen corresponding path program 1 times [2020-10-27 17:45:09,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:09,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420521511] [2020-10-27 17:45:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:09,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:09,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:10,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:10,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 17:45:10,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:45:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-10-27 17:45:10,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 17:45:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 17:45:10,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:10,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:10,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:10,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:10,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:10,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:45:10,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:10,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:11,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:11,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:45:11,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 17:45:11,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:45:11,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:45:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:45:11,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420521511] [2020-10-27 17:45:11,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:11,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:11,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184001377] [2020-10-27 17:45:11,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:11,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:11,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:11,146 INFO L87 Difference]: Start difference. First operand 6230 states and 8208 transitions. Second operand 5 states. [2020-10-27 17:45:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:25,617 INFO L93 Difference]: Finished difference Result 18674 states and 25129 transitions. [2020-10-27 17:45:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:25,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-27 17:45:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:25,695 INFO L225 Difference]: With dead ends: 18674 [2020-10-27 17:45:25,695 INFO L226 Difference]: Without dead ends: 12450 [2020-10-27 17:45:25,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:45:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12450 states. [2020-10-27 17:45:26,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12450 to 12442. [2020-10-27 17:45:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12442 states. [2020-10-27 17:45:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12442 states to 12442 states and 16355 transitions. [2020-10-27 17:45:26,182 INFO L78 Accepts]: Start accepts. Automaton has 12442 states and 16355 transitions. Word has length 140 [2020-10-27 17:45:26,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:26,182 INFO L481 AbstractCegarLoop]: Abstraction has 12442 states and 16355 transitions. [2020-10-27 17:45:26,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 12442 states and 16355 transitions. [2020-10-27 17:45:26,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 17:45:26,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:26,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-27 17:45:26,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:45:26,189 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:26,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:26,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1189556178, now seen corresponding path program 1 times [2020-10-27 17:45:26,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:26,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491752832] [2020-10-27 17:45:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:27,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:29,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:29,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 17:45:29,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:45:29,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3729 [2020-10-27 17:45:29,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-27 17:45:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 17:45:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:30,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:30,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:30,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:30,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:45:30,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:30,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:30,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:30,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:30,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:30,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:30,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:45:30,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:30,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 17:45:30,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:30,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:30,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 17:45:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:30,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:30,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:30,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 17:45:30,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 17:45:30,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 17:45:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:45:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-27 17:45:30,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491752832] [2020-10-27 17:45:30,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:30,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:30,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508802213] [2020-10-27 17:45:30,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:30,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:30,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:30,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:30,391 INFO L87 Difference]: Start difference. First operand 12442 states and 16355 transitions. Second operand 5 states. [2020-10-27 17:45:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:46,259 INFO L93 Difference]: Finished difference Result 30308 states and 41190 transitions. [2020-10-27 17:45:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:46,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-27 17:45:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:46,347 INFO L225 Difference]: With dead ends: 30308 [2020-10-27 17:45:46,347 INFO L226 Difference]: Without dead ends: 17872 [2020-10-27 17:45:46,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:45:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17872 states. [2020-10-27 17:45:46,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17872 to 17864. [2020-10-27 17:45:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17864 states. [2020-10-27 17:45:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17864 states to 17864 states and 23007 transitions. [2020-10-27 17:45:46,893 INFO L78 Accepts]: Start accepts. Automaton has 17864 states and 23007 transitions. Word has length 203 [2020-10-27 17:45:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:46,894 INFO L481 AbstractCegarLoop]: Abstraction has 17864 states and 23007 transitions. [2020-10-27 17:45:46,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 17864 states and 23007 transitions. [2020-10-27 17:45:46,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 17:45:46,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:46,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:45:46,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:45:46,904 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:46,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:46,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1678693768, now seen corresponding path program 1 times [2020-10-27 17:45:46,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:46,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167223422] [2020-10-27 17:45:46,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:47,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:48,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:50,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:51,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:51,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 17:45:51,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:45:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 17:45:51,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 17:45:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 17:45:51,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:52,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:52,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:52,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:52,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:45:52,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:52,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:52,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:45:52,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 17:45:52,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:45:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:52,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:52,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 17:45:52,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 17:45:52,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 17:45:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 17:45:52,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167223422] [2020-10-27 17:45:52,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:52,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:52,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687892822] [2020-10-27 17:45:52,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:52,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:52,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:52,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:52,433 INFO L87 Difference]: Start difference. First operand 17864 states and 23007 transitions. Second operand 5 states. [2020-10-27 17:46:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:08,041 INFO L93 Difference]: Finished difference Result 45024 states and 60025 transitions. [2020-10-27 17:46:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:08,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-27 17:46:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:08,175 INFO L225 Difference]: With dead ends: 45024 [2020-10-27 17:46:08,176 INFO L226 Difference]: Without dead ends: 27166 [2020-10-27 17:46:08,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27166 states. [2020-10-27 17:46:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27166 to 27158. [2020-10-27 17:46:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27158 states. [2020-10-27 17:46:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27158 states to 27158 states and 34528 transitions. [2020-10-27 17:46:09,017 INFO L78 Accepts]: Start accepts. Automaton has 27158 states and 34528 transitions. Word has length 236 [2020-10-27 17:46:09,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:09,018 INFO L481 AbstractCegarLoop]: Abstraction has 27158 states and 34528 transitions. [2020-10-27 17:46:09,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 27158 states and 34528 transitions. [2020-10-27 17:46:09,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-27 17:46:09,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:09,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:46:09,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:46:09,075 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:09,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2017910814, now seen corresponding path program 1 times [2020-10-27 17:46:09,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:09,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057041224] [2020-10-27 17:46:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:09,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:10,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:10,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:14,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:14,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-27 17:46:14,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:46:14,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 17:46:14,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 533 [2020-10-27 17:46:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 17:46:14,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:46:14,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:14,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:14,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:14,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:14,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:46:14,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:14,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:14,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:14,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 17:46:14,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 17:46:14,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 17:46:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:14,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:15,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:15,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-27 17:46:15,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-27 17:46:15,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 417 [2020-10-27 17:46:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:15,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:46:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:15,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:15,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:46:15,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 17:46:15,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 17:46:15,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:46:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 17:46:16,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057041224] [2020-10-27 17:46:16,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:16,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:16,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302878872] [2020-10-27 17:46:16,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:16,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:16,590 INFO L87 Difference]: Start difference. First operand 27158 states and 34528 transitions. Second operand 5 states. [2020-10-27 17:46:24,028 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 17:46:28,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:28,923 INFO L93 Difference]: Finished difference Result 54343 states and 69170 transitions. [2020-10-27 17:46:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:28,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 574 [2020-10-27 17:46:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:29,037 INFO L225 Difference]: With dead ends: 54343 [2020-10-27 17:46:29,038 INFO L226 Difference]: Without dead ends: 27166 [2020-10-27 17:46:29,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27166 states. [2020-10-27 17:46:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27166 to 27158. [2020-10-27 17:46:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27158 states. [2020-10-27 17:46:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27158 states to 27158 states and 34520 transitions. [2020-10-27 17:46:29,703 INFO L78 Accepts]: Start accepts. Automaton has 27158 states and 34520 transitions. Word has length 574 [2020-10-27 17:46:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:29,704 INFO L481 AbstractCegarLoop]: Abstraction has 27158 states and 34520 transitions. [2020-10-27 17:46:29,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:29,704 INFO L276 IsEmpty]: Start isEmpty. Operand 27158 states and 34520 transitions. [2020-10-27 17:46:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2020-10-27 17:46:29,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:29,758 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:46:29,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:46:29,758 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:29,759 INFO L82 PathProgramCache]: Analyzing trace with hash -786418738, now seen corresponding path program 1 times [2020-10-27 17:46:29,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:29,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983078320] [2020-10-27 17:46:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:29,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:31,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:31,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:34,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:34,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 612 [2020-10-27 17:46:34,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:46:34,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-27 17:46:34,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 555 [2020-10-27 17:46:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 17:46:34,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:35,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:35,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:35,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:35,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:35,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:46:35,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:35,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:35,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:35,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:35,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:35,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:46:35,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 17:46:35,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:35,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 17:46:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:35,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:35,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-27 17:46:35,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:35,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-27 17:46:35,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 457 [2020-10-27 17:46:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:36,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:46:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:36,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:36,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 17:46:36,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 17:46:36,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 17:46:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 17:46:36,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983078320] [2020-10-27 17:46:36,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:36,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:36,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905408558] [2020-10-27 17:46:36,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:36,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:36,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:36,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:36,765 INFO L87 Difference]: Start difference. First operand 27158 states and 34520 transitions. Second operand 5 states. [2020-10-27 17:46:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:57,448 INFO L93 Difference]: Finished difference Result 75990 states and 98931 transitions. [2020-10-27 17:46:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:57,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 596 [2020-10-27 17:46:57,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:57,677 INFO L225 Difference]: With dead ends: 75990 [2020-10-27 17:46:57,677 INFO L226 Difference]: Without dead ends: 48838 [2020-10-27 17:46:57,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:57,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48838 states. [2020-10-27 17:46:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48838 to 48063. [2020-10-27 17:46:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48063 states. [2020-10-27 17:46:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48063 states to 48063 states and 61071 transitions. [2020-10-27 17:46:58,887 INFO L78 Accepts]: Start accepts. Automaton has 48063 states and 61071 transitions. Word has length 596 [2020-10-27 17:46:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:58,888 INFO L481 AbstractCegarLoop]: Abstraction has 48063 states and 61071 transitions. [2020-10-27 17:46:58,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 48063 states and 61071 transitions. [2020-10-27 17:46:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2020-10-27 17:46:59,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:59,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:46:59,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:46:59,322 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:59,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2118836474, now seen corresponding path program 1 times [2020-10-27 17:46:59,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:59,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686970666] [2020-10-27 17:46:59,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:04,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:04,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 703 [2020-10-27 17:47:04,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:47:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 17:47:04,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 643 [2020-10-27 17:47:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 17:47:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:05,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:05,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:05,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:05,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:05,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:47:05,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:05,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:05,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 640 [2020-10-27 17:47:05,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-27 17:47:05,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 628 [2020-10-27 17:47:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:47:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:06,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:06,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-27 17:47:06,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-27 17:47:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-27 17:47:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:06,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:47:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:06,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 17:47:06,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 17:47:06,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 17:47:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:47:07,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686970666] [2020-10-27 17:47:07,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:07,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:07,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815097530] [2020-10-27 17:47:07,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:07,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:07,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:07,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:07,197 INFO L87 Difference]: Start difference. First operand 48063 states and 61071 transitions. Second operand 5 states. [2020-10-27 17:47:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:26,140 INFO L93 Difference]: Finished difference Result 117016 states and 150974 transitions. [2020-10-27 17:47:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:26,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 687 [2020-10-27 17:47:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:26,144 INFO L225 Difference]: With dead ends: 117016 [2020-10-27 17:47:26,144 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 17:47:26,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:26,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 17:47:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 17:47:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 17:47:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 17:47:26,270 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 687 [2020-10-27 17:47:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:26,271 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 17:47:26,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 17:47:26,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 17:47:26,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:47:26,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 17:47:26,554 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-27 17:47:30,213 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 28 [2020-10-27 17:47:30,661 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 28 [2020-10-27 17:47:33,552 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 264 DAG size of output: 36 [2020-10-27 17:47:35,108 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 287 DAG size of output: 36 [2020-10-27 17:47:36,537 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 264 DAG size of output: 36 [2020-10-27 17:47:37,894 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 264 DAG size of output: 36 [2020-10-27 17:47:39,224 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 264 DAG size of output: 36 [2020-10-27 17:47:39,930 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 19 [2020-10-27 17:47:40,181 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 28 [2020-10-27 17:47:41,580 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 280 DAG size of output: 55