/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem18_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:58:29,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:58:29,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:58:29,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:58:29,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:58:29,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:58:29,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:58:29,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:58:29,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:58:29,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:58:29,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:58:29,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:58:29,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:58:29,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:58:29,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:58:29,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:58:29,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:58:29,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:58:29,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:58:29,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:58:29,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:58:29,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:58:29,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:58:29,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:58:29,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:58:29,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:58:29,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:58:29,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:58:29,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:58:29,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:58:29,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:58:29,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:58:29,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:58:29,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:58:29,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:58:29,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:58:29,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:58:29,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:58:29,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:58:29,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:58:29,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:58:29,826 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 [2020-10-28 13:58:29,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:58:29,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:58:29,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:58:29,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:58:29,862 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:58:29,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:58:29,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:58:29,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:58:29,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:58:29,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:58:29,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:58:29,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:58:29,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:58:29,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:58:29,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:58:29,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:58:29,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:58:29,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:58:29,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:58:29,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:58:29,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:58:29,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:58:29,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:58:29,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:58:29,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:58:29,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:58:29,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:58:29,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:58:29,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:58:29,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:58:30,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:58:30,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:58:30,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:58:30,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:58:30,336 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:58:30,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2020-10-28 13:58:30,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c99a261b/fedb064336c14b8bac02ebe8c4b894ed/FLAG64eb51bf4 [2020-10-28 13:58:31,485 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:58:31,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2020-10-28 13:58:31,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c99a261b/fedb064336c14b8bac02ebe8c4b894ed/FLAG64eb51bf4 [2020-10-28 13:58:31,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c99a261b/fedb064336c14b8bac02ebe8c4b894ed [2020-10-28 13:58:31,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:58:31,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:58:31,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:58:31,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:58:31,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:58:31,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:58:31" (1/1) ... [2020-10-28 13:58:31,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407f7f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:31, skipping insertion in model container [2020-10-28 13:58:31,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:58:31" (1/1) ... [2020-10-28 13:58:31,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:58:31,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:58:32,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:58:33,006 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:58:33,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:58:33,694 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:58:33,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33 WrapperNode [2020-10-28 13:58:33,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:58:33,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:58:33,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:58:33,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:58:33,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33" (1/1) ... [2020-10-28 13:58:33,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33" (1/1) ... [2020-10-28 13:58:33,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33" (1/1) ... [2020-10-28 13:58:33,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33" (1/1) ... [2020-10-28 13:58:33,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33" (1/1) ... [2020-10-28 13:58:33,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33" (1/1) ... [2020-10-28 13:58:34,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33" (1/1) ... [2020-10-28 13:58:34,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:58:34,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:58:34,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:58:34,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:58:34,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33" (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 [2020-10-28 13:58:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:58:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:58:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:58:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:58:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:58:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:58:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:58:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:58:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:58:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:58:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:58:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:58:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:58:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:58:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:58:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:58:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:58:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:58:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:58:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:58:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:58:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:58:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:58:38,500 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:58:38,501 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:58:38,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:58:38 BoogieIcfgContainer [2020-10-28 13:58:38,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:58:38,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:58:38,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:58:38,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:58:38,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:58:31" (1/3) ... [2020-10-28 13:58:38,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e277e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:58:38, skipping insertion in model container [2020-10-28 13:58:38,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:33" (2/3) ... [2020-10-28 13:58:38,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e277e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:58:38, skipping insertion in model container [2020-10-28 13:58:38,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:58:38" (3/3) ... [2020-10-28 13:58:38,514 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label46.c [2020-10-28 13:58:38,527 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:58:38,533 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:58:38,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:58:38,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:58:38,581 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:58:38,581 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:58:38,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:58:38,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:58:38,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:58:38,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:58:38,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:58:38,617 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:58:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 13:58:38,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:38,626 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] [2020-10-28 13:58:38,626 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:38,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1873168728, now seen corresponding path program 1 times [2020-10-28 13:58:38,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:38,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326412569] [2020-10-28 13:58:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:38,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:39,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 13:58:39,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-28 13:58:39,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:39,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:39,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:58:39,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:58:39,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 13:58:39,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:58:39,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:39,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:39,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:39,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:39,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:58:39,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:39,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:58:39,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:58:39,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326412569] [2020-10-28 13:58:39,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:58:39,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:58:39,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715562108] [2020-10-28 13:58:39,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:58:39,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:39,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:58:39,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:58:39,606 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:58:48,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:48,972 INFO L93 Difference]: Finished difference Result 2291 states and 4370 transitions. [2020-10-28 13:58:48,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:58:48,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-28 13:58:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:49,007 INFO L225 Difference]: With dead ends: 2291 [2020-10-28 13:58:49,008 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:58:49,020 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 [2020-10-28 13:58:49,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:58:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-28 13:58:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-28 13:58:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2263 transitions. [2020-10-28 13:58:49,199 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2263 transitions. Word has length 43 [2020-10-28 13:58:49,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:49,200 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2263 transitions. [2020-10-28 13:58:49,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:58:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2263 transitions. [2020-10-28 13:58:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 13:58:49,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:49,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:58:49,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:58:49,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:49,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:49,213 INFO L82 PathProgramCache]: Analyzing trace with hash 484861417, now seen corresponding path program 1 times [2020-10-28 13:58:49,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:49,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429456847] [2020-10-28 13:58:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:50,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:58:50,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:58:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-28 13:58:50,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:50,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:58:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:58:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:58:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:50,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:50,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:50,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:50,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:58:50,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:50,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:58:50,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:50,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:50,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:50,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:50,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:58:50,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:58:50,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:50,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:58:50,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:58:50,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429456847] [2020-10-28 13:58:50,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:58:50,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:58:50,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097331883] [2020-10-28 13:58:50,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:58:50,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:50,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:58:50,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:58:50,762 INFO L87 Difference]: Start difference. First operand 1429 states and 2263 transitions. Second operand 7 states. [2020-10-28 13:59:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:01,125 INFO L93 Difference]: Finished difference Result 4369 states and 6949 transitions. [2020-10-28 13:59:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:59:01,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-28 13:59:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:01,149 INFO L225 Difference]: With dead ends: 4369 [2020-10-28 13:59:01,150 INFO L226 Difference]: Without dead ends: 2946 [2020-10-28 13:59:01,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:59:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-10-28 13:59:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2895. [2020-10-28 13:59:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2895 states. [2020-10-28 13:59:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 3903 transitions. [2020-10-28 13:59:01,253 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 3903 transitions. Word has length 112 [2020-10-28 13:59:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:01,254 INFO L481 AbstractCegarLoop]: Abstraction has 2895 states and 3903 transitions. [2020-10-28 13:59:01,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:01,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 3903 transitions. [2020-10-28 13:59:01,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-28 13:59:01,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:01,263 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:59:01,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:59:01,265 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:01,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:01,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1354261192, now seen corresponding path program 1 times [2020-10-28 13:59:01,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:01,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396883880] [2020-10-28 13:59:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:01,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:01,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:03,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:06,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:06,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:59:06,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:59:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4685 [2020-10-28 13:59:06,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:06,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:59:06,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:59:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:06,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:06,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:06,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:59:06,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:06,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:06,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:06,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:06,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:59:06,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:06,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 13:59:06,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:06,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:59:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 13:59:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:06,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:06,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:59:06,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:06,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:59:06,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:06,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:59:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 70 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:59:06,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396883880] [2020-10-28 13:59:06,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:06,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:06,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870741764] [2020-10-28 13:59:06,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:06,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:06,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:06,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:06,977 INFO L87 Difference]: Start difference. First operand 2895 states and 3903 transitions. Second operand 7 states. [2020-10-28 13:59:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:16,559 INFO L93 Difference]: Finished difference Result 7433 states and 9777 transitions. [2020-10-28 13:59:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:59:16,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-10-28 13:59:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:16,592 INFO L225 Difference]: With dead ends: 7433 [2020-10-28 13:59:16,592 INFO L226 Difference]: Without dead ends: 4544 [2020-10-28 13:59:16,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:59:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2020-10-28 13:59:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4395. [2020-10-28 13:59:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4395 states. [2020-10-28 13:59:16,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 5619 transitions. [2020-10-28 13:59:16,742 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 5619 transitions. Word has length 234 [2020-10-28 13:59:16,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:16,743 INFO L481 AbstractCegarLoop]: Abstraction has 4395 states and 5619 transitions. [2020-10-28 13:59:16,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:16,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 5619 transitions. [2020-10-28 13:59:16,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-28 13:59:16,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:16,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:16,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:59:16,751 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:16,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1951824041, now seen corresponding path program 1 times [2020-10-28 13:59:16,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:16,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327481616] [2020-10-28 13:59:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:17,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:21,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:21,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-28 13:59:21,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:59:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4716 [2020-10-28 13:59:21,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:21,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:59:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 13:59:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:21,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:21,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:21,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:59:21,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:21,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:21,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:22,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:22,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:59:22,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 13:59:22,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:22,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:59:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:22,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:59:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:22,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:22,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:59:22,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:59:22,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:22,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:59:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:59:22,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327481616] [2020-10-28 13:59:22,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:22,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:59:22,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254672452] [2020-10-28 13:59:22,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:59:22,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:22,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:59:22,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:59:22,516 INFO L87 Difference]: Start difference. First operand 4395 states and 5619 transitions. Second operand 5 states. [2020-10-28 13:59:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:32,103 INFO L93 Difference]: Finished difference Result 13122 states and 17004 transitions. [2020-10-28 13:59:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:59:32,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 350 [2020-10-28 13:59:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:32,164 INFO L225 Difference]: With dead ends: 13122 [2020-10-28 13:59:32,164 INFO L226 Difference]: Without dead ends: 8733 [2020-10-28 13:59:32,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:59:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8733 states. [2020-10-28 13:59:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8733 to 7990. [2020-10-28 13:59:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7990 states. [2020-10-28 13:59:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7990 states to 7990 states and 9700 transitions. [2020-10-28 13:59:32,398 INFO L78 Accepts]: Start accepts. Automaton has 7990 states and 9700 transitions. Word has length 350 [2020-10-28 13:59:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:32,400 INFO L481 AbstractCegarLoop]: Abstraction has 7990 states and 9700 transitions. [2020-10-28 13:59:32,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:59:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 7990 states and 9700 transitions. [2020-10-28 13:59:32,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-28 13:59:32,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:32,410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:32,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:59:32,411 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash 410363416, now seen corresponding path program 1 times [2020-10-28 13:59:32,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:32,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11179895] [2020-10-28 13:59:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:32,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-28 13:59:37,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:59:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 13:59:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:37,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:59:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:59:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:37,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:37,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:37,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:37,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:37,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:59:37,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:37,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:59:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:38,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:38,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:59:38,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-28 13:59:38,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:38,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:59:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:38,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:59:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:38,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:38,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:59:38,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:59:38,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:38,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:59:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:59:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:38,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:38,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:38,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:59:38,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:38,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:59:38,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:38,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:38,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:38,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:38,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:59:38,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:59:38,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11179895] [2020-10-28 13:59:38,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:38,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:38,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153802268] [2020-10-28 13:59:38,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:38,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:38,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:38,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:38,716 INFO L87 Difference]: Start difference. First operand 7990 states and 9700 transitions. Second operand 7 states. [2020-10-28 13:59:50,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:50,523 INFO L93 Difference]: Finished difference Result 19133 states and 23963 transitions. [2020-10-28 13:59:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:59:50,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2020-10-28 13:59:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:50,588 INFO L225 Difference]: With dead ends: 19133 [2020-10-28 13:59:50,588 INFO L226 Difference]: Without dead ends: 11149 [2020-10-28 13:59:50,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:59:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11149 states. [2020-10-28 13:59:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11149 to 11033. [2020-10-28 13:59:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11033 states. [2020-10-28 13:59:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11033 states to 11033 states and 13588 transitions. [2020-10-28 13:59:50,937 INFO L78 Accepts]: Start accepts. Automaton has 11033 states and 13588 transitions. Word has length 440 [2020-10-28 13:59:50,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:50,938 INFO L481 AbstractCegarLoop]: Abstraction has 11033 states and 13588 transitions. [2020-10-28 13:59:50,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 11033 states and 13588 transitions. [2020-10-28 13:59:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-28 13:59:50,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:50,950 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:50,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:59:50,951 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:50,951 INFO L82 PathProgramCache]: Analyzing trace with hash -554868398, now seen corresponding path program 1 times [2020-10-28 13:59:50,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:50,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150116380] [2020-10-28 13:59:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:51,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:56,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:56,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-28 13:59:56,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:59:56,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:59:56,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:56,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:59:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:59:56,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:56,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:56,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:56,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:59:56,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:56,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:56,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:56,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:59:56,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:59:56,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:56,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:59:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:59:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:56,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:59:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:59:56,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:56,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:59:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:59:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:56,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:56,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:59:56,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:59:56,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:56,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:59:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:59:57,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150116380] [2020-10-28 13:59:57,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:57,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:57,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533284992] [2020-10-28 13:59:57,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:57,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:57,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:57,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:57,032 INFO L87 Difference]: Start difference. First operand 11033 states and 13588 transitions. Second operand 7 states. [2020-10-28 14:00:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:11,669 INFO L93 Difference]: Finished difference Result 25913 states and 31985 transitions. [2020-10-28 14:00:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:00:11,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 447 [2020-10-28 14:00:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:11,719 INFO L225 Difference]: With dead ends: 25913 [2020-10-28 14:00:11,720 INFO L226 Difference]: Without dead ends: 14886 [2020-10-28 14:00:11,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:00:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14886 states. [2020-10-28 14:00:12,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14886 to 13998. [2020-10-28 14:00:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13998 states. [2020-10-28 14:00:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13998 states to 13998 states and 17022 transitions. [2020-10-28 14:00:12,034 INFO L78 Accepts]: Start accepts. Automaton has 13998 states and 17022 transitions. Word has length 447 [2020-10-28 14:00:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:12,035 INFO L481 AbstractCegarLoop]: Abstraction has 13998 states and 17022 transitions. [2020-10-28 14:00:12,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 13998 states and 17022 transitions. [2020-10-28 14:00:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-28 14:00:12,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:12,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:12,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:00:12,049 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:12,049 INFO L82 PathProgramCache]: Analyzing trace with hash -398986179, now seen corresponding path program 1 times [2020-10-28 14:00:12,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:12,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795736571] [2020-10-28 14:00:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-28 14:00:17,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:00:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 14:00:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:17,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 14:00:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 14:00:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:17,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:17,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:17,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:17,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:00:17,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:17,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:17,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:17,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:00:17,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 14:00:17,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:17,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:17,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:17,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:17,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:17,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:00:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:00:17,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:17,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:17,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:00:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:17,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:17,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:00:17,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:00:17,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:17,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:17,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:17,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:17,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:00:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:17,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 14:00:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:17,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:17,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:17,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 14:00:17,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 14:00:17,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:17,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 14:00:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 14:00:18,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795736571] [2020-10-28 14:00:18,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:18,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:18,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374324693] [2020-10-28 14:00:18,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:18,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:18,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:18,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:18,053 INFO L87 Difference]: Start difference. First operand 13998 states and 17022 transitions. Second operand 7 states. [2020-10-28 14:00:30,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:30,970 INFO L93 Difference]: Finished difference Result 31139 states and 39194 transitions. [2020-10-28 14:00:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:00:30,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 516 [2020-10-28 14:00:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:31,049 INFO L225 Difference]: With dead ends: 31139 [2020-10-28 14:00:31,049 INFO L226 Difference]: Without dead ends: 17147 [2020-10-28 14:00:31,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:00:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17147 states. [2020-10-28 14:00:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17147 to 17007. [2020-10-28 14:00:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17007 states. [2020-10-28 14:00:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17007 states to 17007 states and 20649 transitions. [2020-10-28 14:00:31,492 INFO L78 Accepts]: Start accepts. Automaton has 17007 states and 20649 transitions. Word has length 516 [2020-10-28 14:00:31,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:31,493 INFO L481 AbstractCegarLoop]: Abstraction has 17007 states and 20649 transitions. [2020-10-28 14:00:31,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 17007 states and 20649 transitions. [2020-10-28 14:00:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-28 14:00:31,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:31,501 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:31,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:00:31,501 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:31,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:31,502 INFO L82 PathProgramCache]: Analyzing trace with hash -803025011, now seen corresponding path program 1 times [2020-10-28 14:00:31,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:31,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544387988] [2020-10-28 14:00:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:31,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:31,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:36,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-28 14:00:36,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:00:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 14:00:36,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:36,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 14:00:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 14:00:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:36,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:36,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:36,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:36,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:00:36,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:36,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:36,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:36,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:00:36,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:36,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 14:00:36,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:36,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:36,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:36,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:36,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:36,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:37,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:37,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:37,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:00:37,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:00:37,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:37,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:00:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:37,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:37,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:00:37,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:37,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 14:00:37,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:37,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:00:37,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:37,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 14:00:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:37,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:37,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 14:00:37,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 14:00:37,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:37,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 14:00:37,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 14:00:37,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544387988] [2020-10-28 14:00:37,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:37,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:37,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155611283] [2020-10-28 14:00:37,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:37,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:37,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:37,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:37,514 INFO L87 Difference]: Start difference. First operand 17007 states and 20649 transitions. Second operand 7 states. [2020-10-28 14:00:50,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:50,951 INFO L93 Difference]: Finished difference Result 37009 states and 44912 transitions. [2020-10-28 14:00:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:00:50,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 523 [2020-10-28 14:00:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:51,018 INFO L225 Difference]: With dead ends: 37009 [2020-10-28 14:00:51,018 INFO L226 Difference]: Without dead ends: 20008 [2020-10-28 14:00:51,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:00:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20008 states. [2020-10-28 14:00:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20008 to 19869. [2020-10-28 14:00:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19869 states. [2020-10-28 14:00:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19869 states to 19869 states and 23868 transitions. [2020-10-28 14:00:51,484 INFO L78 Accepts]: Start accepts. Automaton has 19869 states and 23868 transitions. Word has length 523 [2020-10-28 14:00:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:51,486 INFO L481 AbstractCegarLoop]: Abstraction has 19869 states and 23868 transitions. [2020-10-28 14:00:51,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 19869 states and 23868 transitions. [2020-10-28 14:00:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-28 14:00:51,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:51,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:51,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:00:51,495 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:51,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:51,496 INFO L82 PathProgramCache]: Analyzing trace with hash -169450635, now seen corresponding path program 1 times [2020-10-28 14:00:51,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:51,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436908896] [2020-10-28 14:00:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:56,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:56,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-28 14:00:56,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:00:56,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 14:00:56,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:56,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 14:00:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 14:00:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:56,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:56,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:56,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:56,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:56,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:56,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:00:56,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:56,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:56,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:56,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:57,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:57,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:00:57,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 14:00:57,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:57,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:00:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:57,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:57,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:00:57,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:57,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:00:57,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:57,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:57,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:57,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:57,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:00:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:00:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:57,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:57,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:00:57,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:00:57,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:57,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 14:00:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:57,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 14:00:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:57,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:57,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 14:00:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:00:57,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:57,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 14:00:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 182 proven. 75 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 14:00:57,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436908896] [2020-10-28 14:00:57,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:57,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:57,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803871917] [2020-10-28 14:00:57,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:57,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:57,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:57,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:57,702 INFO L87 Difference]: Start difference. First operand 19869 states and 23868 transitions. Second operand 7 states. [2020-10-28 14:01:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:10,981 INFO L93 Difference]: Finished difference Result 55805 states and 68893 transitions. [2020-10-28 14:01:10,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:01:10,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 544 [2020-10-28 14:01:10,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:11,094 INFO L225 Difference]: With dead ends: 55805 [2020-10-28 14:01:11,094 INFO L226 Difference]: Without dead ends: 35942 [2020-10-28 14:01:11,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:01:11,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35942 states. [2020-10-28 14:01:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35942 to 35100. [2020-10-28 14:01:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35100 states. [2020-10-28 14:01:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35100 states to 35100 states and 41285 transitions. [2020-10-28 14:01:11,816 INFO L78 Accepts]: Start accepts. Automaton has 35100 states and 41285 transitions. Word has length 544 [2020-10-28 14:01:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:11,817 INFO L481 AbstractCegarLoop]: Abstraction has 35100 states and 41285 transitions. [2020-10-28 14:01:11,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:11,817 INFO L276 IsEmpty]: Start isEmpty. Operand 35100 states and 41285 transitions. [2020-10-28 14:01:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-28 14:01:11,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:11,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:11,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:01:11,825 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:11,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1115942742, now seen corresponding path program 1 times [2020-10-28 14:01:11,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:11,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075443342] [2020-10-28 14:01:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:12,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:16,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:16,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-28 14:01:16,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:01:16,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 14:01:16,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:16,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-28 14:01:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 14:01:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:17,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:17,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:17,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:17,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:01:17,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:17,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:17,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:17,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 14:01:17,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 14:01:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:17,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-28 14:01:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:17,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:17,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:17,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:01:17,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:01:17,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:17,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:01:17,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:17,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 14:01:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:17,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:17,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:01:17,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:01:17,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:17,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 14:01:17,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-28 14:01:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:17,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:17,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:17,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 14:01:17,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 14:01:17,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:17,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 14:01:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:17,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 182 proven. 75 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 14:01:18,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075443342] [2020-10-28 14:01:18,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:18,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:01:18,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381068638] [2020-10-28 14:01:18,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:01:18,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:18,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:01:18,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:01:18,133 INFO L87 Difference]: Start difference. First operand 35100 states and 41285 transitions. Second operand 8 states. [2020-10-28 14:01:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:37,277 INFO L93 Difference]: Finished difference Result 83132 states and 100483 transitions. [2020-10-28 14:01:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:01:37,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 551 [2020-10-28 14:01:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:37,414 INFO L225 Difference]: With dead ends: 83132 [2020-10-28 14:01:37,414 INFO L226 Difference]: Without dead ends: 48038 [2020-10-28 14:01:37,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:01:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48038 states. [2020-10-28 14:01:38,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48038 to 47968. [2020-10-28 14:01:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47968 states. [2020-10-28 14:01:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47968 states to 47968 states and 57228 transitions. [2020-10-28 14:01:38,900 INFO L78 Accepts]: Start accepts. Automaton has 47968 states and 57228 transitions. Word has length 551 [2020-10-28 14:01:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:38,901 INFO L481 AbstractCegarLoop]: Abstraction has 47968 states and 57228 transitions. [2020-10-28 14:01:38,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:01:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 47968 states and 57228 transitions. [2020-10-28 14:01:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1111 [2020-10-28 14:01:38,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:38,931 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:38,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:01:38,932 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:38,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:38,933 INFO L82 PathProgramCache]: Analyzing trace with hash -854778096, now seen corresponding path program 1 times [2020-10-28 14:01:38,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:38,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430904254] [2020-10-28 14:01:38,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:39,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:43,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:43,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1134 [2020-10-28 14:01:43,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:01:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3804 [2020-10-28 14:01:43,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:43,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-28 14:01:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 14:01:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:43,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:43,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:43,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:01:43,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:43,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:43,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:43,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:01:43,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 14:01:43,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:43,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:43,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:43,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:43,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:43,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:01:43,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 14:01:43,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:43,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:43,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:01:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:43,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:43,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:43,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:01:43,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:01:43,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:43,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:44,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:01:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:44,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:44,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:44,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:01:44,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:44,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 14:01:44,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:44,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:44,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:44,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:44,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:44,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:44,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:01:44,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:01:44,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:44,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:01:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:44,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:44,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:01:44,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 14:01:44,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:44,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:01:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:44,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 14:01:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:44,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:44,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 14:01:44,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 14:01:44,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:44,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 14:01:44,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-28 14:01:45,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430904254] [2020-10-28 14:01:45,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:45,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:45,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059222044] [2020-10-28 14:01:45,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:45,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:45,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:45,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:45,173 INFO L87 Difference]: Start difference. First operand 47968 states and 57228 transitions. Second operand 7 states. [2020-10-28 14:02:02,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:02,944 INFO L93 Difference]: Finished difference Result 110456 states and 134451 transitions. [2020-10-28 14:02:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:02:02,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1110 [2020-10-28 14:02:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:03,334 INFO L225 Difference]: With dead ends: 110456 [2020-10-28 14:02:03,335 INFO L226 Difference]: Without dead ends: 62494 [2020-10-28 14:02:03,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:02:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62494 states. [2020-10-28 14:02:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62494 to 62410. [2020-10-28 14:02:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62410 states. [2020-10-28 14:02:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62410 states to 62410 states and 74609 transitions. [2020-10-28 14:02:05,036 INFO L78 Accepts]: Start accepts. Automaton has 62410 states and 74609 transitions. Word has length 1110 [2020-10-28 14:02:05,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:05,037 INFO L481 AbstractCegarLoop]: Abstraction has 62410 states and 74609 transitions. [2020-10-28 14:02:05,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 62410 states and 74609 transitions. [2020-10-28 14:02:05,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2020-10-28 14:02:05,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:05,055 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:02:05,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:02:05,056 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:05,057 INFO L82 PathProgramCache]: Analyzing trace with hash 236378960, now seen corresponding path program 1 times [2020-10-28 14:02:05,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:05,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117999229] [2020-10-28 14:02:05,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking...