/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:53:08,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:53:08,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:53:08,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:53:08,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:53:08,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:53:08,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:53:08,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:53:08,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:53:08,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:53:08,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:53:08,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:53:08,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:53:08,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:53:08,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:53:08,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:53:08,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:53:08,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:53:08,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:53:08,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:53:08,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:53:08,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:53:08,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:53:08,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:53:08,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:53:08,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:53:08,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:53:08,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:53:08,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:53:08,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:53:08,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:53:08,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:53:08,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:53:08,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:53:08,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:53:08,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:53:08,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:53:08,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:53:08,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:53:08,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:53:08,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:53:08,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:53:08,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:53:08,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:53:08,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:53:08,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:53:08,818 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:53:08,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:53:08,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:53:08,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:53:08,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:53:08,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:53:08,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:53:08,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:53:08,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:53:08,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:53:08,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:53:08,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:53:08,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:53:08,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:53:08,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:53:08,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:53:08,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:53:08,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:53:08,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:53:08,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:53:08,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:53:08,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:53:08,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:53:08,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:53:08,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:53:08,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:53:09,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:53:09,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:53:09,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:53:09,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:53:09,267 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:53:09,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12.c [2020-10-26 23:53:09,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08003cc6e/92bcd321f5c04a468c6d673faf6e8c10/FLAGbb89eed63 [2020-10-26 23:53:10,104 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:53:10,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label12.c [2020-10-26 23:53:10,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08003cc6e/92bcd321f5c04a468c6d673faf6e8c10/FLAGbb89eed63 [2020-10-26 23:53:10,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08003cc6e/92bcd321f5c04a468c6d673faf6e8c10 [2020-10-26 23:53:10,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:53:10,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:53:10,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:53:10,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:53:10,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:53:10,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:53:10" (1/1) ... [2020-10-26 23:53:10,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a907df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:10, skipping insertion in model container [2020-10-26 23:53:10,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:53:10" (1/1) ... [2020-10-26 23:53:10,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:53:10,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:53:11,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:53:11,142 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:53:11,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:53:11,556 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:53:11,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11 WrapperNode [2020-10-26 23:53:11,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:53:11,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:53:11,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:53:11,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:53:11,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11" (1/1) ... [2020-10-26 23:53:11,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11" (1/1) ... [2020-10-26 23:53:11,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11" (1/1) ... [2020-10-26 23:53:11,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11" (1/1) ... [2020-10-26 23:53:11,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11" (1/1) ... [2020-10-26 23:53:11,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11" (1/1) ... [2020-10-26 23:53:11,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11" (1/1) ... [2020-10-26 23:53:11,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:53:11,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:53:11,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:53:11,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:53:11,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:53:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:53:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:53:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:53:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:53:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:53:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:53:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:53:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:53:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:53:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:53:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:53:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:53:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:53:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:53:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:53:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:53:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:53:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:53:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:53:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:53:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:53:14,492 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:53:14,492 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:53:14,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:53:14 BoogieIcfgContainer [2020-10-26 23:53:14,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:53:14,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:53:14,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:53:14,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:53:14,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:53:10" (1/3) ... [2020-10-26 23:53:14,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e19ff5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:53:14, skipping insertion in model container [2020-10-26 23:53:14,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:11" (2/3) ... [2020-10-26 23:53:14,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e19ff5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:53:14, skipping insertion in model container [2020-10-26 23:53:14,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:53:14" (3/3) ... [2020-10-26 23:53:14,505 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label12.c [2020-10-26 23:53:14,518 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:53:14,524 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:53:14,539 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:53:14,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:53:14,570 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:53:14,570 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:53:14,571 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:53:14,571 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:53:14,571 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:53:14,571 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:53:14,571 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:53:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:53:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 23:53:14,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:14,608 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] [2020-10-26 23:53:14,609 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:14,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:14,616 INFO L82 PathProgramCache]: Analyzing trace with hash 791947724, now seen corresponding path program 1 times [2020-10-26 23:53:14,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:14,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755485974] [2020-10-26 23:53:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:15,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:15,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 23:53:15,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-26 23:53:15,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:53:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:53:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-26 23:53:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:53:15,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:15,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:15,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:15,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:53:15,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:53:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:53:15,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755485974] [2020-10-26 23:53:15,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:53:15,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:53:15,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957550503] [2020-10-26 23:53:15,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:53:15,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:15,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:53:15,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:53:15,651 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:53:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:20,598 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-26 23:53:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:53:20,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-26 23:53:20,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:20,630 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:53:20,630 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:53:20,641 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 [2020-10-26 23:53:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:53:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-26 23:53:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-26 23:53:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-26 23:53:20,777 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 46 [2020-10-26 23:53:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:20,778 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-26 23:53:20,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:53:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-26 23:53:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 23:53:20,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:20,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:20,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:53:20,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:20,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:20,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1272840468, now seen corresponding path program 1 times [2020-10-26 23:53:20,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:20,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547992354] [2020-10-26 23:53:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:22,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:22,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:53:22,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:22,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-10-26 23:53:22,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:53:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:53:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:53:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:53:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:22,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:22,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:22,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:53:22,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:53:22,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:53:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:22,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:53:22,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 23:53:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:53:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:53:22,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547992354] [2020-10-26 23:53:22,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:53:22,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:53:22,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960397357] [2020-10-26 23:53:22,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:22,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:22,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:22,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:22,620 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-26 23:53:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:27,930 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-26 23:53:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:53:27,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-26 23:53:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:27,943 INFO L225 Difference]: With dead ends: 2090 [2020-10-26 23:53:27,944 INFO L226 Difference]: Without dead ends: 1403 [2020-10-26 23:53:27,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:53:27,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-26 23:53:28,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-26 23:53:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-26 23:53:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-26 23:53:28,013 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 122 [2020-10-26 23:53:28,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:28,014 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-26 23:53:28,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-26 23:53:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-26 23:53:28,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:28,023 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:28,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:53:28,024 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:28,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:28,024 INFO L82 PathProgramCache]: Analyzing trace with hash -26612038, now seen corresponding path program 1 times [2020-10-26 23:53:28,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:28,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629512788] [2020-10-26 23:53:28,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:28,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:31,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:31,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-26 23:53:31,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:53:31,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3149 [2020-10-26 23:53:31,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:53:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:53:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:53:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:31,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:31,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:31,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:31,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:31,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:53:31,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:53:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:31,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:31,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:31,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:53:31,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 23:53:31,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:53:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:53:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:31,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:31,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:53:31,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:53:31,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:53:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-26 23:53:31,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629512788] [2020-10-26 23:53:31,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:31,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:53:31,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479167138] [2020-10-26 23:53:31,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:31,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:31,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:31,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:31,941 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 7 states. [2020-10-26 23:53:37,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:37,342 INFO L93 Difference]: Finished difference Result 3485 states and 4770 transitions. [2020-10-26 23:53:37,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:53:37,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-26 23:53:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:37,360 INFO L225 Difference]: With dead ends: 3485 [2020-10-26 23:53:37,360 INFO L226 Difference]: Without dead ends: 2112 [2020-10-26 23:53:37,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:53:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-10-26 23:53:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2083. [2020-10-26 23:53:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-10-26 23:53:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2688 transitions. [2020-10-26 23:53:37,441 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2688 transitions. Word has length 209 [2020-10-26 23:53:37,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:37,442 INFO L481 AbstractCegarLoop]: Abstraction has 2083 states and 2688 transitions. [2020-10-26 23:53:37,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:37,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2688 transitions. [2020-10-26 23:53:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-26 23:53:37,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:37,446 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:53:37,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:53:37,447 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:37,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1136097484, now seen corresponding path program 1 times [2020-10-26 23:53:37,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:37,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173873694] [2020-10-26 23:53:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:40,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:40,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-26 23:53:40,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:53:40,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2693 [2020-10-26 23:53:40,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:53:40,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:53:40,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-26 23:53:40,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:40,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:40,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:40,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:40,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:53:40,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:53:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:40,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:40,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:40,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:40,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:53:40,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:40,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 23:53:40,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:53:40,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:53:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:41,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:41,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:53:41,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:41,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-26 23:53:41,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:53:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:53:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 40 proven. 107 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-26 23:53:42,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173873694] [2020-10-26 23:53:42,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:42,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:53:42,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938769523] [2020-10-26 23:53:42,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:53:42,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:42,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:53:42,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:53:42,141 INFO L87 Difference]: Start difference. First operand 2083 states and 2688 transitions. Second operand 11 states. [2020-10-26 23:53:42,372 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-26 23:53:42,873 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-26 23:53:43,130 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-26 23:53:43,756 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-26 23:53:44,766 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-26 23:53:48,002 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-26 23:53:48,206 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-26 23:53:48,857 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-26 23:53:49,057 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-26 23:53:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:54,753 INFO L93 Difference]: Finished difference Result 2941 states and 3776 transitions. [2020-10-26 23:53:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 23:53:54,754 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 272 [2020-10-26 23:53:54,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:54,772 INFO L225 Difference]: With dead ends: 2941 [2020-10-26 23:53:54,773 INFO L226 Difference]: Without dead ends: 2938 [2020-10-26 23:53:54,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2020-10-26 23:53:54,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-10-26 23:53:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2431. [2020-10-26 23:53:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-10-26 23:53:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3171 transitions. [2020-10-26 23:53:54,868 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3171 transitions. Word has length 272 [2020-10-26 23:53:54,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:54,869 INFO L481 AbstractCegarLoop]: Abstraction has 2431 states and 3171 transitions. [2020-10-26 23:53:54,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:53:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3171 transitions. [2020-10-26 23:53:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-26 23:53:54,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:54,882 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:54,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:53:54,882 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:54,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:54,883 INFO L82 PathProgramCache]: Analyzing trace with hash -150279636, now seen corresponding path program 1 times [2020-10-26 23:53:54,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:54,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259154523] [2020-10-26 23:53:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:55,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:57,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:58,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:59,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:59,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-26 23:53:59,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:53:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-26 23:53:59,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:53:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 23:53:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:00,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:00,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:00,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:00,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:54:00,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:00,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:54:00,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:54:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:54:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:00,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:54:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:00,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:54:00,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-26 23:54:00,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:54:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:00,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:54:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:00,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:00,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:54:00,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-26 23:54:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:01,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:54:01,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:54:01,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:54:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 248 proven. 198 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-26 23:54:01,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259154523] [2020-10-26 23:54:01,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:01,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:54:01,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536657353] [2020-10-26 23:54:01,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:54:01,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:01,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:54:01,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:54:01,716 INFO L87 Difference]: Start difference. First operand 2431 states and 3171 transitions. Second operand 6 states. [2020-10-26 23:54:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:06,531 INFO L93 Difference]: Finished difference Result 5006 states and 6527 transitions. [2020-10-26 23:54:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:54:06,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 474 [2020-10-26 23:54:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:06,549 INFO L225 Difference]: With dead ends: 5006 [2020-10-26 23:54:06,549 INFO L226 Difference]: Without dead ends: 2502 [2020-10-26 23:54:06,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:54:06,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2020-10-26 23:54:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2431. [2020-10-26 23:54:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-10-26 23:54:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 2963 transitions. [2020-10-26 23:54:06,633 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 2963 transitions. Word has length 474 [2020-10-26 23:54:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:06,633 INFO L481 AbstractCegarLoop]: Abstraction has 2431 states and 2963 transitions. [2020-10-26 23:54:06,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:54:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 2963 transitions. [2020-10-26 23:54:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-26 23:54:06,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:06,645 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:54:06,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:54:06,646 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:06,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:06,646 INFO L82 PathProgramCache]: Analyzing trace with hash -328449650, now seen corresponding path program 1 times [2020-10-26 23:54:06,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:06,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653458550] [2020-10-26 23:54:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:07,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:11,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:11,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-26 23:54:11,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:54:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:54:11,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:54:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:54:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:11,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:11,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:11,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:11,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:54:11,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:12,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:12,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:12,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:12,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:54:12,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:54:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:12,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:54:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:12,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:12,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:54:12,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:54:12,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:54:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:12,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:12,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:54:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:12,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:12,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:12,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:12,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:12,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:54:12,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:54:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:12,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:12,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:12,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:54:12,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:54:12,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:54:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:12,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 152 proven. 272 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2020-10-26 23:54:12,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653458550] [2020-10-26 23:54:12,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:12,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:12,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383816318] [2020-10-26 23:54:12,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:12,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:12,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:12,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:12,643 INFO L87 Difference]: Start difference. First operand 2431 states and 2963 transitions. Second operand 7 states. [2020-10-26 23:54:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:17,751 INFO L93 Difference]: Finished difference Result 5597 states and 6764 transitions. [2020-10-26 23:54:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:54:17,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 477 [2020-10-26 23:54:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:17,769 INFO L225 Difference]: With dead ends: 5597 [2020-10-26 23:54:17,769 INFO L226 Difference]: Without dead ends: 3172 [2020-10-26 23:54:17,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:54:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2020-10-26 23:54:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3122. [2020-10-26 23:54:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3122 states. [2020-10-26 23:54:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 3696 transitions. [2020-10-26 23:54:17,865 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 3696 transitions. Word has length 477 [2020-10-26 23:54:17,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:17,866 INFO L481 AbstractCegarLoop]: Abstraction has 3122 states and 3696 transitions. [2020-10-26 23:54:17,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 3696 transitions. [2020-10-26 23:54:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2020-10-26 23:54:17,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:17,884 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:54:17,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:54:17,885 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:17,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1290400544, now seen corresponding path program 1 times [2020-10-26 23:54:17,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:17,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910451840] [2020-10-26 23:54:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:18,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:18,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:23,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:23,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 634 [2020-10-26 23:54:23,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:54:23,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 23:54:23,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:54:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:54:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:23,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:23,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:23,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:23,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:54:23,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:23,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:23,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:23,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:54:23,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 23:54:23,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:54:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:23,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:54:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:23,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:23,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:54:23,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:23,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:54:23,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:54:23,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:23,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:54:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:23,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:23,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:23,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:54:23,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:54:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:24,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:24,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:54:24,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:54:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:54:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 286 proven. 198 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-26 23:54:24,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910451840] [2020-10-26 23:54:24,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:24,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:24,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919785499] [2020-10-26 23:54:24,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:24,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:24,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:24,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:24,363 INFO L87 Difference]: Start difference. First operand 3122 states and 3696 transitions. Second operand 7 states. [2020-10-26 23:54:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:30,490 INFO L93 Difference]: Finished difference Result 7333 states and 9007 transitions. [2020-10-26 23:54:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:54:30,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 616 [2020-10-26 23:54:30,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:30,512 INFO L225 Difference]: With dead ends: 7333 [2020-10-26 23:54:30,512 INFO L226 Difference]: Without dead ends: 4554 [2020-10-26 23:54:30,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:54:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2020-10-26 23:54:30,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 3847. [2020-10-26 23:54:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3847 states. [2020-10-26 23:54:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 4520 transitions. [2020-10-26 23:54:30,622 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 4520 transitions. Word has length 616 [2020-10-26 23:54:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:30,623 INFO L481 AbstractCegarLoop]: Abstraction has 3847 states and 4520 transitions. [2020-10-26 23:54:30,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 4520 transitions. [2020-10-26 23:54:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2020-10-26 23:54:30,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:30,654 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:30,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:54:30,655 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:30,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1686123908, now seen corresponding path program 1 times [2020-10-26 23:54:30,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:30,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142862466] [2020-10-26 23:54:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:35,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:35,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-26 23:54:35,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:54:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-26 23:54:35,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:54:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:54:35,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:35,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:35,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:54:35,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:36,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:36,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:54:36,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:36,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:36,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:36,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:36,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:54:36,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:54:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:36,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:54:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:36,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:36,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:54:36,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:54:36,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:54:36,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:36,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:54:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:36,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:36,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:36,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:54:36,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:36,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:36,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:36,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:54:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:36,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:36,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:54:36,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:54:36,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:54:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1342 backedges. 434 proven. 240 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2020-10-26 23:54:37,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142862466] [2020-10-26 23:54:37,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:37,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:37,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557269229] [2020-10-26 23:54:37,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:37,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:37,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:37,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:37,456 INFO L87 Difference]: Start difference. First operand 3847 states and 4520 transitions. Second operand 7 states. [2020-10-26 23:54:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:46,332 INFO L93 Difference]: Finished difference Result 10143 states and 12060 transitions. [2020-10-26 23:54:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:54:46,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 786 [2020-10-26 23:54:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:46,365 INFO L225 Difference]: With dead ends: 10143 [2020-10-26 23:54:46,366 INFO L226 Difference]: Without dead ends: 6641 [2020-10-26 23:54:46,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:54:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6641 states. [2020-10-26 23:54:46,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6641 to 6259. [2020-10-26 23:54:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6259 states. [2020-10-26 23:54:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6259 states to 6259 states and 7158 transitions. [2020-10-26 23:54:46,545 INFO L78 Accepts]: Start accepts. Automaton has 6259 states and 7158 transitions. Word has length 786 [2020-10-26 23:54:46,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:46,546 INFO L481 AbstractCegarLoop]: Abstraction has 6259 states and 7158 transitions. [2020-10-26 23:54:46,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:46,546 INFO L276 IsEmpty]: Start isEmpty. Operand 6259 states and 7158 transitions. [2020-10-26 23:54:46,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2020-10-26 23:54:46,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:46,564 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:46,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:54:46,565 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:46,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:46,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1345503100, now seen corresponding path program 1 times [2020-10-26 23:54:46,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:46,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731264184] [2020-10-26 23:54:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:46,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:47,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:51,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 824 [2020-10-26 23:54:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:54:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-26 23:54:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:54:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:54:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:52,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:52,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:52,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:52,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:52,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:52,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:54:52,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:52,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:52,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:52,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-26 23:54:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:54:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:53,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:53,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:54:53,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-26 23:54:53,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:54:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:53,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:54:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:53,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:53,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:53,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:54:53,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:53,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-26 23:54:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:53,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:53,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:54:53,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:54:53,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:54:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 161 proven. 750 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-26 23:54:54,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731264184] [2020-10-26 23:54:54,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:54,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:54:54,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884943542] [2020-10-26 23:54:54,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:54:54,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:54,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:54:54,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:54:54,577 INFO L87 Difference]: Start difference. First operand 6259 states and 7158 transitions. Second operand 8 states. [2020-10-26 23:55:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:00,534 INFO L93 Difference]: Finished difference Result 12304 states and 14483 transitions. [2020-10-26 23:55:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:55:00,536 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 806 [2020-10-26 23:55:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:00,566 INFO L225 Difference]: With dead ends: 12304 [2020-10-26 23:55:00,566 INFO L226 Difference]: Without dead ends: 6390 [2020-10-26 23:55:00,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:55:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6390 states. [2020-10-26 23:55:00,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6390 to 6264. [2020-10-26 23:55:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6264 states. [2020-10-26 23:55:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6264 states to 6264 states and 7162 transitions. [2020-10-26 23:55:00,758 INFO L78 Accepts]: Start accepts. Automaton has 6264 states and 7162 transitions. Word has length 806 [2020-10-26 23:55:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:00,759 INFO L481 AbstractCegarLoop]: Abstraction has 6264 states and 7162 transitions. [2020-10-26 23:55:00,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:55:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 6264 states and 7162 transitions. [2020-10-26 23:55:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-26 23:55:00,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:00,779 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:00,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:55:00,779 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:00,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1918721998, now seen corresponding path program 1 times [2020-10-26 23:55:00,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:00,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687899442] [2020-10-26 23:55:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:01,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:03,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:05,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-26 23:55:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:55:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 23:55:05,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:55:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 23:55:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:06,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:06,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:06,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:55:06,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:06,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:06,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:06,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:55:06,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:55:06,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:55:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:55:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:06,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:06,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:55:06,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:06,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:55:06,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 23:55:06,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-26 23:55:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:06,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:55:06,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:55:06,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-26 23:55:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-10-26 23:55:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:06,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:06,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:06,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:55:06,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:06,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:55:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:07,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:07,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:55:07,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:55:07,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:55:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1438 backedges. 322 proven. 354 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2020-10-26 23:55:07,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687899442] [2020-10-26 23:55:07,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:07,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:07,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963865839] [2020-10-26 23:55:07,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:07,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:07,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:07,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:07,745 INFO L87 Difference]: Start difference. First operand 6264 states and 7162 transitions. Second operand 7 states. [2020-10-26 23:55:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:13,636 INFO L93 Difference]: Finished difference Result 13246 states and 15246 transitions. [2020-10-26 23:55:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:55:13,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 807 [2020-10-26 23:55:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:13,661 INFO L225 Difference]: With dead ends: 13246 [2020-10-26 23:55:13,661 INFO L226 Difference]: Without dead ends: 7327 [2020-10-26 23:55:13,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:55:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2020-10-26 23:55:13,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 7299. [2020-10-26 23:55:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7299 states. [2020-10-26 23:55:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7299 states to 7299 states and 8223 transitions. [2020-10-26 23:55:13,842 INFO L78 Accepts]: Start accepts. Automaton has 7299 states and 8223 transitions. Word has length 807 [2020-10-26 23:55:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:13,843 INFO L481 AbstractCegarLoop]: Abstraction has 7299 states and 8223 transitions. [2020-10-26 23:55:13,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 7299 states and 8223 transitions. [2020-10-26 23:55:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2020-10-26 23:55:13,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:13,862 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:13,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:55:13,862 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:13,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1132552250, now seen corresponding path program 1 times [2020-10-26 23:55:13,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:13,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788323079] [2020-10-26 23:55:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:16,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:17,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:19,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:19,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 887 [2020-10-26 23:55:19,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:55:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-26 23:55:19,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:55:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 493 [2020-10-26 23:55:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:19,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:19,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:19,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:19,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:55:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:19,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:19,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:19,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:55:19,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-26 23:55:19,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-26 23:55:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:19,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:55:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:19,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:19,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 23:55:19,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 23:55:19,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:19,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:55:19,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:19,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-26 23:55:19,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-26 23:55:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:20,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:20,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:55:20,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:20,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:55:20,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:55:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:20,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-26 23:55:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:20,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:20,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:20,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:55:20,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:20,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2020-10-26 23:55:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:20,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:20,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:55:20,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:20,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:55:20,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:55:20,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:20,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 316 proven. 1085 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-26 23:55:21,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788323079] [2020-10-26 23:55:21,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:21,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:55:21,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531744981] [2020-10-26 23:55:21,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:55:21,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:21,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:55:21,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:55:21,527 INFO L87 Difference]: Start difference. First operand 7299 states and 8223 transitions. Second operand 10 states. [2020-10-26 23:55:21,694 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-26 23:55:24,358 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-26 23:55:30,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:30,173 INFO L93 Difference]: Finished difference Result 18112 states and 20941 transitions. [2020-10-26 23:55:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:55:30,174 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 867 [2020-10-26 23:55:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:30,207 INFO L225 Difference]: With dead ends: 18112 [2020-10-26 23:55:30,207 INFO L226 Difference]: Without dead ends: 11091 [2020-10-26 23:55:30,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:55:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11091 states. [2020-10-26 23:55:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11091 to 10731. [2020-10-26 23:55:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10731 states. [2020-10-26 23:55:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10731 states to 10731 states and 12490 transitions. [2020-10-26 23:55:30,477 INFO L78 Accepts]: Start accepts. Automaton has 10731 states and 12490 transitions. Word has length 867 [2020-10-26 23:55:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:30,478 INFO L481 AbstractCegarLoop]: Abstraction has 10731 states and 12490 transitions. [2020-10-26 23:55:30,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:55:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10731 states and 12490 transitions. [2020-10-26 23:55:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2020-10-26 23:55:30,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:30,503 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:30,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:55:30,504 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:30,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:30,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1725834618, now seen corresponding path program 1 times [2020-10-26 23:55:30,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:30,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398888487] [2020-10-26 23:55:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:35,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:35,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 935 [2020-10-26 23:55:35,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:55:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-26 23:55:35,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-26 23:55:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:55:35,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:35,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:35,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:35,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:35,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:55:35,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:35,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:36,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:55:36,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:55:36,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:36,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:55:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:36,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:55:36,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:55:36,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:55:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:55:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:36,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:55:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:55:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-26 23:55:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:36,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:55:36,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:55:36,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:36,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:36,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:55:36,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:36,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-10-26 23:55:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:36,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:36,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:36,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:55:36,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:36,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2020-10-26 23:55:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:36,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:55:36,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:55:36,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:55:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1880 backedges. 509 proven. 307 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2020-10-26 23:55:37,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398888487] [2020-10-26 23:55:37,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:37,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:37,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775645354] [2020-10-26 23:55:37,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:37,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:37,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:37,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:37,186 INFO L87 Difference]: Start difference. First operand 10731 states and 12490 transitions. Second operand 7 states. [2020-10-26 23:55:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:44,219 INFO L93 Difference]: Finished difference Result 22852 states and 27345 transitions. [2020-10-26 23:55:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:55:44,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 913 [2020-10-26 23:55:44,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:44,260 INFO L225 Difference]: With dead ends: 22852 [2020-10-26 23:55:44,260 INFO L226 Difference]: Without dead ends: 12466 [2020-10-26 23:55:44,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12466 states. [2020-10-26 23:55:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12466 to 11766. [2020-10-26 23:55:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11766 states. [2020-10-26 23:55:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11766 states to 11766 states and 13679 transitions. [2020-10-26 23:55:44,557 INFO L78 Accepts]: Start accepts. Automaton has 11766 states and 13679 transitions. Word has length 913 [2020-10-26 23:55:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:44,559 INFO L481 AbstractCegarLoop]: Abstraction has 11766 states and 13679 transitions. [2020-10-26 23:55:44,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 11766 states and 13679 transitions. [2020-10-26 23:55:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-26 23:55:44,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:44,589 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:44,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:55:44,589 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:44,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:44,590 INFO L82 PathProgramCache]: Analyzing trace with hash -990571680, now seen corresponding path program 1 times [2020-10-26 23:55:44,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:44,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311738271] [2020-10-26 23:55:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:44,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:45,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:46,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:47,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:49,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 966 [2020-10-26 23:55:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:55:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:55:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-26 23:55:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 23:55:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:50,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:50,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:50,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:55:50,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:50,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:50,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:55:50,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:50,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:55:50,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:50,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:55:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:50,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:50,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:55:50,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:55:50,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:50,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:55:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:50,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:50,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:55:50,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:55:50,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:50,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:50,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:50,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:55:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:50,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-10-26 23:55:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:50,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:55:50,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:55:50,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:55:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-26 23:55:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:55:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:55:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:55:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 757 [2020-10-26 23:55:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:50,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:55:50,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:55:50,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:55:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 611 proven. 266 refuted. 0 times theorem prover too weak. 1185 trivial. 0 not checked. [2020-10-26 23:55:51,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311738271] [2020-10-26 23:55:51,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:51,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:55:51,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341173128] [2020-10-26 23:55:51,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:55:51,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:51,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:55:51,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:55:51,383 INFO L87 Difference]: Start difference. First operand 11766 states and 13679 transitions. Second operand 8 states. [2020-10-26 23:55:59,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:59,328 INFO L93 Difference]: Finished difference Result 29608 states and 35046 transitions. [2020-10-26 23:55:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:55:59,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 944 [2020-10-26 23:55:59,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:59,374 INFO L225 Difference]: With dead ends: 29608 [2020-10-26 23:55:59,374 INFO L226 Difference]: Without dead ends: 15386 [2020-10-26 23:55:59,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:59,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15386 states. [2020-10-26 23:55:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15386 to 12688. [2020-10-26 23:55:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12688 states. [2020-10-26 23:55:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12688 states to 12688 states and 13629 transitions. [2020-10-26 23:55:59,672 INFO L78 Accepts]: Start accepts. Automaton has 12688 states and 13629 transitions. Word has length 944 [2020-10-26 23:55:59,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:59,673 INFO L481 AbstractCegarLoop]: Abstraction has 12688 states and 13629 transitions. [2020-10-26 23:55:59,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:55:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 12688 states and 13629 transitions. [2020-10-26 23:55:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1302 [2020-10-26 23:55:59,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:59,708 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:59,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:55:59,708 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:59,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1858373490, now seen corresponding path program 1 times [2020-10-26 23:55:59,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:59,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992095577] [2020-10-26 23:55:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:00,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:04,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:04,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1327 [2020-10-26 23:56:04,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 23:56:04,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:56:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:05,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:05,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:05,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:05,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:56:05,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:56:05,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:56:05,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:56:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:56:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:05,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:56:05,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:05,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:56:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:56:05,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:56:05,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:56:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-26 23:56:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:56:05,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:56:05,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:56:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 813 [2020-10-26 23:56:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:56:05,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:56:05,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:56:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 955 [2020-10-26 23:56:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:56:05,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:56:05,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:56:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:05,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2020-10-26 23:56:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:06,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:06,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:56:06,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:56:06,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-26 23:56:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3718 backedges. 601 proven. 554 refuted. 0 times theorem prover too weak. 2563 trivial. 0 not checked. [2020-10-26 23:56:07,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992095577] [2020-10-26 23:56:07,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:07,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:07,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623444546] [2020-10-26 23:56:07,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:07,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:07,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:07,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:07,263 INFO L87 Difference]: Start difference. First operand 12688 states and 13629 transitions. Second operand 7 states. [2020-10-26 23:56:12,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:12,633 INFO L93 Difference]: Finished difference Result 27413 states and 29519 transitions. [2020-10-26 23:56:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:56:12,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1301 [2020-10-26 23:56:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:12,674 INFO L225 Difference]: With dead ends: 27413 [2020-10-26 23:56:12,674 INFO L226 Difference]: Without dead ends: 15070 [2020-10-26 23:56:12,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:56:12,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15070 states. [2020-10-26 23:56:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15070 to 15068. [2020-10-26 23:56:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15068 states. [2020-10-26 23:56:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15068 states to 15068 states and 16139 transitions. [2020-10-26 23:56:12,968 INFO L78 Accepts]: Start accepts. Automaton has 15068 states and 16139 transitions. Word has length 1301 [2020-10-26 23:56:12,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:12,969 INFO L481 AbstractCegarLoop]: Abstraction has 15068 states and 16139 transitions. [2020-10-26 23:56:12,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:12,969 INFO L276 IsEmpty]: Start isEmpty. Operand 15068 states and 16139 transitions. [2020-10-26 23:56:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2020-10-26 23:56:13,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:13,008 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:13,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:56:13,009 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:13,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:13,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1913291716, now seen corresponding path program 1 times [2020-10-26 23:56:13,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:13,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990373673] [2020-10-26 23:56:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:18,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:18,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1392 [2020-10-26 23:56:18,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-26 23:56:18,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:56:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:18,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:18,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:18,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:18,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:18,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:18,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:18,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:18,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:56:18,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:18,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:18,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:18,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:56:18,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:56:18,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:56:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:18,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:56:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:19,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:19,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:19,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:56:19,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:19,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:56:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:19,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:19,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:19,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:56:19,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:56:19,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-26 23:56:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-26 23:56:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:19,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:19,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:56:19,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:56:19,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:56:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:19,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-26 23:56:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:19,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:19,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:19,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:56:19,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:56:19,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:56:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:19,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1181 [2020-10-26 23:56:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:19,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:19,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:56:19,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:56:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:56:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3453 backedges. 555 proven. 489 refuted. 0 times theorem prover too weak. 2409 trivial. 0 not checked. [2020-10-26 23:56:21,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990373673] [2020-10-26 23:56:21,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:21,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:21,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864488185] [2020-10-26 23:56:21,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:21,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:21,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:21,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:21,037 INFO L87 Difference]: Start difference. First operand 15068 states and 16139 transitions. Second operand 7 states. [2020-10-26 23:56:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:26,707 INFO L93 Difference]: Finished difference Result 32489 states and 35065 transitions. [2020-10-26 23:56:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:56:26,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1368 [2020-10-26 23:56:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:26,765 INFO L225 Difference]: With dead ends: 32489 [2020-10-26 23:56:26,766 INFO L226 Difference]: Without dead ends: 17766 [2020-10-26 23:56:26,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:56:26,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17766 states. [2020-10-26 23:56:27,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17766 to 17429. [2020-10-26 23:56:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17429 states. [2020-10-26 23:56:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17429 states to 17429 states and 18420 transitions. [2020-10-26 23:56:27,115 INFO L78 Accepts]: Start accepts. Automaton has 17429 states and 18420 transitions. Word has length 1368 [2020-10-26 23:56:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:27,116 INFO L481 AbstractCegarLoop]: Abstraction has 17429 states and 18420 transitions. [2020-10-26 23:56:27,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 17429 states and 18420 transitions. [2020-10-26 23:56:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1414 [2020-10-26 23:56:27,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:27,152 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:27,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:56:27,153 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:27,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1988528986, now seen corresponding path program 1 times [2020-10-26 23:56:27,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:27,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799464382] [2020-10-26 23:56:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:32,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:32,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1439 [2020-10-26 23:56:32,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-26 23:56:32,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:56:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-26 23:56:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:32,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:32,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:32,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:32,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:56:32,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:32,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:32,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:32,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:32,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:32,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:56:32,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:33,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:33,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:56:33,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:56:33,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:33,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:33,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:33,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:56:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:33,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:33,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:33,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:56:33,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:56:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:56:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:33,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:33,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:33,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:33,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:56:33,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:33,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:56:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:33,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:56:33,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 23:56:33,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:56:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:56:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:33,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:34,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:34,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:56:34,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-26 23:56:34,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-26 23:56:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:34,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-26 23:56:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:34,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:34,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:56:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:56:34,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:56:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1226 [2020-10-26 23:56:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:34,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:34,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:56:34,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:56:34,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:56:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4040 backedges. 1182 proven. 257 refuted. 0 times theorem prover too weak. 2601 trivial. 0 not checked. [2020-10-26 23:56:36,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799464382] [2020-10-26 23:56:36,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:36,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:36,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948701081] [2020-10-26 23:56:36,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:36,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:36,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:36,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:36,454 INFO L87 Difference]: Start difference. First operand 17429 states and 18420 transitions. Second operand 7 states.