/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:58:55,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:58:55,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:58:55,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:58:55,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:58:55,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:58:55,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:58:55,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:58:55,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:58:55,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:58:55,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:58:55,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:58:55,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:58:55,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:58:55,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:58:55,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:58:55,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:58:55,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:58:55,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:58:55,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:58:55,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:58:55,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:58:55,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:58:55,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:58:55,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:58:55,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:58:55,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:58:55,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:58:55,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:58:55,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:58:55,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:58:55,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:58:55,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:58:55,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:58:55,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:58:55,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:58:55,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:58:55,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:58:55,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:58:55,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:58:55,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:58:55,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 20:58:55,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:58:55,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:58:55,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:58:55,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:58:55,834 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:58:55,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:58:55,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:58:55,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:58:55,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:58:55,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:58:55,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:58:55,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:58:55,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:58:55,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:58:55,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:58:55,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:58:55,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:58:55,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:58:55,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:58:55,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:58:55,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:58:55,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:58:55,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:58:55,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:58:55,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:58:55,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:58:55,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:58:55,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:58:55,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:58:55,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:58:56,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:58:56,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:58:56,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:58:56,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:58:56,264 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:58:56,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label16.c [2020-10-26 20:58:56,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3476682cd/a3a73d7090d54a51a0b4a49a8516c260/FLAG187f4c7b3 [2020-10-26 20:58:57,523 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:58:57,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label16.c [2020-10-26 20:58:57,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3476682cd/a3a73d7090d54a51a0b4a49a8516c260/FLAG187f4c7b3 [2020-10-26 20:58:58,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3476682cd/a3a73d7090d54a51a0b4a49a8516c260 [2020-10-26 20:58:58,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:58:58,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:58:58,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:58:58,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:58:58,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:58:58,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:58:58" (1/1) ... [2020-10-26 20:58:58,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1bab91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:58, skipping insertion in model container [2020-10-26 20:58:58,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:58:58" (1/1) ... [2020-10-26 20:58:58,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:58:58,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:58:59,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:58:59,677 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:59:00,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:59:00,462 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:59:00,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00 WrapperNode [2020-10-26 20:59:00,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:59:00,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:59:00,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:59:00,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:59:00,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00" (1/1) ... [2020-10-26 20:59:00,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00" (1/1) ... [2020-10-26 20:59:00,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00" (1/1) ... [2020-10-26 20:59:00,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00" (1/1) ... [2020-10-26 20:59:00,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00" (1/1) ... [2020-10-26 20:59:00,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00" (1/1) ... [2020-10-26 20:59:00,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00" (1/1) ... [2020-10-26 20:59:00,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:59:00,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:59:00,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:59:00,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:59:00,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:59:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:59:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:59:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:59:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:59:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 20:59:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 20:59:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 20:59:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:59:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:59:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 20:59:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 20:59:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 20:59:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:59:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:59:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:59:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:59:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:59:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:59:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:59:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:59:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:59:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:59:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:59:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:59:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:59:06,354 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:59:06,355 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:59:06,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:59:06 BoogieIcfgContainer [2020-10-26 20:59:06,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:59:06,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:59:06,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:59:06,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:59:06,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:58:58" (1/3) ... [2020-10-26 20:59:06,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c140ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:59:06, skipping insertion in model container [2020-10-26 20:59:06,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:59:00" (2/3) ... [2020-10-26 20:59:06,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c140ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:59:06, skipping insertion in model container [2020-10-26 20:59:06,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:59:06" (3/3) ... [2020-10-26 20:59:06,368 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label16.c [2020-10-26 20:59:06,381 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:59:06,388 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:59:06,403 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:59:06,438 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:59:06,438 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:59:06,439 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:59:06,439 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:59:06,439 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:59:06,439 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:59:06,439 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:59:06,440 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:59:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 20:59:06,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-26 20:59:06,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:59:06,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:59:06,539 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:59:06,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:59:06,546 INFO L82 PathProgramCache]: Analyzing trace with hash 18754564, now seen corresponding path program 1 times [2020-10-26 20:59:06,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:59:06,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584953456] [2020-10-26 20:59:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:07,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:12,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:12,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-26 20:59:12,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:59:12,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 20:59:12,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 20:59:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:59:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 819 [2020-10-26 20:59:12,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:59:13,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:13,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:13,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:13,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:13,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 20:59:13,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:59:13,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:59:14,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584953456] [2020-10-26 20:59:14,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:59:14,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 20:59:14,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587114269] [2020-10-26 20:59:14,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:59:14,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:14,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:59:14,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:59:14,532 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 20:59:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:59:26,076 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-26 20:59:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:59:26,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 812 [2020-10-26 20:59:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:59:26,126 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 20:59:26,126 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 20:59:26,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:59:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 20:59:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-26 20:59:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-26 20:59:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2730 transitions. [2020-10-26 20:59:26,345 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2730 transitions. Word has length 812 [2020-10-26 20:59:26,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:59:26,348 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2730 transitions. [2020-10-26 20:59:26,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:59:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2730 transitions. [2020-10-26 20:59:26,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2020-10-26 20:59:26,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:59:26,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:59:26,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:59:26,383 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:59:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:59:26,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1304583398, now seen corresponding path program 1 times [2020-10-26 20:59:26,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:59:26,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605605252] [2020-10-26 20:59:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:31,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:31,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-26 20:59:31,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:59:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-26 20:59:31,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:59:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:59:31,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:59:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 20:59:31,830 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:59:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:31,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:31,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:31,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:59:31,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:59:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-26 20:59:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:59:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:31,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:31,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:59:31,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:31,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 20:59:31,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:31,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:59:31,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:59:32,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605605252] [2020-10-26 20:59:32,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:59:32,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:59:32,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604252722] [2020-10-26 20:59:32,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:59:32,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:32,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:59:32,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:59:32,529 INFO L87 Difference]: Start difference. First operand 1690 states and 2730 transitions. Second operand 7 states. [2020-10-26 20:59:32,672 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:59:40,722 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 20:59:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:59:47,827 INFO L93 Difference]: Finished difference Result 5210 states and 8466 transitions. [2020-10-26 20:59:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:59:47,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 820 [2020-10-26 20:59:47,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:59:47,850 INFO L225 Difference]: With dead ends: 5210 [2020-10-26 20:59:47,850 INFO L226 Difference]: Without dead ends: 3526 [2020-10-26 20:59:47,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:59:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2020-10-26 20:59:47,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 3446. [2020-10-26 20:59:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3446 states. [2020-10-26 20:59:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 5087 transitions. [2020-10-26 20:59:47,981 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 5087 transitions. Word has length 820 [2020-10-26 20:59:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:59:47,981 INFO L481 AbstractCegarLoop]: Abstraction has 3446 states and 5087 transitions. [2020-10-26 20:59:47,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:59:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 5087 transitions. [2020-10-26 20:59:48,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-26 20:59:48,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:59:48,018 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:59:48,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:59:48,018 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:59:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:59:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash -792151614, now seen corresponding path program 1 times [2020-10-26 20:59:48,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:59:48,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731930276] [2020-10-26 20:59:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:51,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:53,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:53,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-26 20:59:53,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:59:53,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-26 20:59:53,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:59:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:59:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:59:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:53,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:53,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:53,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:53,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:53,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:59:53,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:59:53,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:59:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:53,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:53,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:59:53,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:59:53,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:59:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:59:53,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731930276] [2020-10-26 20:59:53,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:59:53,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:59:53,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891453628] [2020-10-26 20:59:53,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:59:53,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:53,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:59:53,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:59:53,806 INFO L87 Difference]: Start difference. First operand 3446 states and 5087 transitions. Second operand 7 states. [2020-10-26 20:59:56,654 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:00:07,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:00:07,422 INFO L93 Difference]: Finished difference Result 10428 states and 15656 transitions. [2020-10-26 21:00:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:00:07,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 822 [2020-10-26 21:00:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:00:07,462 INFO L225 Difference]: With dead ends: 10428 [2020-10-26 21:00:07,462 INFO L226 Difference]: Without dead ends: 6988 [2020-10-26 21:00:07,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:00:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6988 states. [2020-10-26 21:00:07,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6988 to 6949. [2020-10-26 21:00:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6949 states. [2020-10-26 21:00:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6949 states to 6949 states and 9425 transitions. [2020-10-26 21:00:07,740 INFO L78 Accepts]: Start accepts. Automaton has 6949 states and 9425 transitions. Word has length 822 [2020-10-26 21:00:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:00:07,746 INFO L481 AbstractCegarLoop]: Abstraction has 6949 states and 9425 transitions. [2020-10-26 21:00:07,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:00:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6949 states and 9425 transitions. [2020-10-26 21:00:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2020-10-26 21:00:07,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:00:07,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:00:07,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:00:07,776 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:00:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:00:07,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1881923670, now seen corresponding path program 1 times [2020-10-26 21:00:07,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:00:07,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051548294] [2020-10-26 21:00:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:00:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:07,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:12,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:12,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 846 [2020-10-26 21:00:12,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:00:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 21:00:12,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:00:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:00:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 21:00:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:13,098 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:00:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:00:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:13,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:13,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:00:13,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:13,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:00:13,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:00:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:00:13,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:00:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:13,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:13,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-26 21:00:13,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:13,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 21:00:13,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:13,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:00:13,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:00:13,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051548294] [2020-10-26 21:00:13,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:00:13,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:00:13,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751806349] [2020-10-26 21:00:13,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:00:13,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:00:13,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:00:13,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:00:13,659 INFO L87 Difference]: Start difference. First operand 6949 states and 9425 transitions. Second operand 7 states. [2020-10-26 21:00:13,811 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:00:28,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:00:28,064 INFO L93 Difference]: Finished difference Result 21114 states and 29895 transitions. [2020-10-26 21:00:28,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:00:28,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 828 [2020-10-26 21:00:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:00:28,152 INFO L225 Difference]: With dead ends: 21114 [2020-10-26 21:00:28,152 INFO L226 Difference]: Without dead ends: 14171 [2020-10-26 21:00:28,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:00:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14171 states. [2020-10-26 21:00:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14171 to 14033. [2020-10-26 21:00:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14033 states. [2020-10-26 21:00:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14033 states to 14033 states and 18919 transitions. [2020-10-26 21:00:28,564 INFO L78 Accepts]: Start accepts. Automaton has 14033 states and 18919 transitions. Word has length 828 [2020-10-26 21:00:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:00:28,565 INFO L481 AbstractCegarLoop]: Abstraction has 14033 states and 18919 transitions. [2020-10-26 21:00:28,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:00:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 14033 states and 18919 transitions. [2020-10-26 21:00:28,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2020-10-26 21:00:28,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:00:28,609 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:00:28,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:00:28,610 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:00:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:00:28,611 INFO L82 PathProgramCache]: Analyzing trace with hash 677965334, now seen corresponding path program 1 times [2020-10-26 21:00:28,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:00:28,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833373680] [2020-10-26 21:00:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:00:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:33,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:33,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 878 [2020-10-26 21:00:33,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:00:33,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-26 21:00:33,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:33,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:00:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:00:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 21:00:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:34,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:00:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:34,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:34,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:00:34,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:34,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:00:34,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:00:34,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:34,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:00:34,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:00:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:34,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:34,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 21:00:34,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 21:00:34,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 21:00:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:00:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:00:34,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833373680] [2020-10-26 21:00:34,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:00:34,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:00:34,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845336481] [2020-10-26 21:00:34,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:00:34,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:00:34,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:00:34,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:00:34,710 INFO L87 Difference]: Start difference. First operand 14033 states and 18919 transitions. Second operand 7 states. [2020-10-26 21:00:34,843 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:00:38,079 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:00:47,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:00:47,886 INFO L93 Difference]: Finished difference Result 42015 states and 58919 transitions. [2020-10-26 21:00:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:00:47,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 860 [2020-10-26 21:00:47,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:00:48,011 INFO L225 Difference]: With dead ends: 42015 [2020-10-26 21:00:48,012 INFO L226 Difference]: Without dead ends: 27988 [2020-10-26 21:00:48,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:00:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27988 states. [2020-10-26 21:00:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27988 to 27868. [2020-10-26 21:00:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27868 states. [2020-10-26 21:00:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27868 states to 27868 states and 35810 transitions. [2020-10-26 21:00:48,899 INFO L78 Accepts]: Start accepts. Automaton has 27868 states and 35810 transitions. Word has length 860 [2020-10-26 21:00:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:00:48,899 INFO L481 AbstractCegarLoop]: Abstraction has 27868 states and 35810 transitions. [2020-10-26 21:00:48,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:00:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 27868 states and 35810 transitions. [2020-10-26 21:00:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-26 21:00:48,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:00:48,980 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:00:48,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:00:48,980 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:00:48,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:00:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash 968483498, now seen corresponding path program 1 times [2020-10-26 21:00:48,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:00:48,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239026155] [2020-10-26 21:00:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:00:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:49,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:49,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:49,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:54,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 974 [2020-10-26 21:00:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:00:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 21:00:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:00:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:00:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:00:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:00:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:00:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:00:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:00:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:00:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:54,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:54,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:00:54,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:00:54,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:00:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:00:54,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:54,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:00:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:54,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:54,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:00:54,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 21:00:54,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:54,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:54,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:54,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:00:54,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:54,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:00:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:54,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:54,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:54,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 21:00:54,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 21:00:54,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:00:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-26 21:00:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:00:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 151 proven. 47 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-26 21:00:55,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239026155] [2020-10-26 21:00:55,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:00:55,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:00:55,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209333159] [2020-10-26 21:00:55,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:00:55,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:00:55,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:00:55,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:00:55,273 INFO L87 Difference]: Start difference. First operand 27868 states and 35810 transitions. Second operand 8 states. [2020-10-26 21:00:55,561 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:00:57,509 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:00:57,815 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:01:25,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:01:25,956 INFO L93 Difference]: Finished difference Result 111739 states and 154219 transitions. [2020-10-26 21:01:25,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 21:01:25,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 952 [2020-10-26 21:01:25,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:01:26,309 INFO L225 Difference]: With dead ends: 111739 [2020-10-26 21:01:26,309 INFO L226 Difference]: Without dead ends: 83877 [2020-10-26 21:01:26,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 21:01:26,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83877 states. [2020-10-26 21:01:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83877 to 83867. [2020-10-26 21:01:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83867 states. [2020-10-26 21:01:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83867 states to 83867 states and 112081 transitions. [2020-10-26 21:01:28,654 INFO L78 Accepts]: Start accepts. Automaton has 83867 states and 112081 transitions. Word has length 952 [2020-10-26 21:01:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:01:28,655 INFO L481 AbstractCegarLoop]: Abstraction has 83867 states and 112081 transitions. [2020-10-26 21:01:28,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:01:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 83867 states and 112081 transitions. [2020-10-26 21:01:29,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-26 21:01:29,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:01:29,507 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:01:29,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:01:29,508 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:01:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:01:29,509 INFO L82 PathProgramCache]: Analyzing trace with hash 11346069, now seen corresponding path program 1 times [2020-10-26 21:01:29,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:01:29,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296557935] [2020-10-26 21:01:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:01:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:29,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:30,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:33,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:34,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:34,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1005 [2020-10-26 21:01:34,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:01:34,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 21:01:34,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:01:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:01:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 21:01:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:35,219 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:01:35,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:01:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:35,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:35,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:01:35,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:01:35,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:01:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:01:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:01:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:01:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:35,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:35,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:35,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:35,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:01:35,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:01:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 21:01:35,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:01:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:35,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:01:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:35,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:35,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:01:35,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:01:35,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:01:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:35,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 21:01:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:35,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:35,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:01:35,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:01:35,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:01:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:35,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-26 21:01:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:35,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:35,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:01:35,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:35,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:01:35,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-26 21:01:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-26 21:01:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:35,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:35,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:35,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:01:35,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:01:35,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:01:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 166 proven. 53 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 21:01:36,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296557935] [2020-10-26 21:01:36,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:01:36,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:01:36,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495214779] [2020-10-26 21:01:36,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:01:36,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:01:36,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:01:36,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:01:36,304 INFO L87 Difference]: Start difference. First operand 83867 states and 112081 transitions. Second operand 8 states. [2020-10-26 21:01:36,441 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:01:44,483 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 21:01:49,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:01:49,706 INFO L93 Difference]: Finished difference Result 171081 states and 230904 transitions. [2020-10-26 21:01:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:01:49,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 979 [2020-10-26 21:01:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:01:50,012 INFO L225 Difference]: With dead ends: 171081 [2020-10-26 21:01:50,012 INFO L226 Difference]: Without dead ends: 88054 [2020-10-26 21:01:50,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:01:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88054 states. [2020-10-26 21:01:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88054 to 87745. [2020-10-26 21:01:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87745 states. [2020-10-26 21:01:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87745 states to 87745 states and 118280 transitions. [2020-10-26 21:01:53,163 INFO L78 Accepts]: Start accepts. Automaton has 87745 states and 118280 transitions. Word has length 979 [2020-10-26 21:01:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:01:53,163 INFO L481 AbstractCegarLoop]: Abstraction has 87745 states and 118280 transitions. [2020-10-26 21:01:53,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:01:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 87745 states and 118280 transitions. [2020-10-26 21:01:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2020-10-26 21:01:53,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:01:53,411 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:01:53,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:01:53,412 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:01:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:01:53,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1497671042, now seen corresponding path program 1 times [2020-10-26 21:01:53,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:01:53,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778866040] [2020-10-26 21:01:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:01:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:58,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:58,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-26 21:01:58,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:01:58,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 21:01:58,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:01:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:01:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 21:01:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:01:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:58,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:58,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:01:58,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:01:58,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:01:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:01:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:01:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:01:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:58,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:58,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:01:58,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:01:58,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 21:01:58,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:01:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:01:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:59,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:59,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:01:59,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:59,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:01:59,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:01:59,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:59,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 21:01:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:59,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:59,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:01:59,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:59,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 21:01:59,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:01:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:59,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:59,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 21:01:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:59,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:59,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:59,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:01:59,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:01:59,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-26 21:01:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:59,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-26 21:01:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:59,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:59,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:01:59,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:59,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 21:01:59,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:01:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:59,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 173 proven. 74 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 21:01:59,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778866040] [2020-10-26 21:01:59,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:01:59,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:01:59,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906519084] [2020-10-26 21:01:59,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:01:59,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:01:59,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:01:59,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:01:59,870 INFO L87 Difference]: Start difference. First operand 87745 states and 118280 transitions. Second operand 8 states. [2020-10-26 21:02:00,009 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:02:03,321 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:02:13,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:02:13,507 INFO L93 Difference]: Finished difference Result 175107 states and 237488 transitions. [2020-10-26 21:02:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:02:13,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 986 [2020-10-26 21:02:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:02:13,777 INFO L225 Difference]: With dead ends: 175107 [2020-10-26 21:02:13,778 INFO L226 Difference]: Without dead ends: 88202 [2020-10-26 21:02:14,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:02:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88202 states. [2020-10-26 21:02:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88202 to 87826. [2020-10-26 21:02:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87826 states. [2020-10-26 21:02:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87826 states to 87826 states and 118388 transitions. [2020-10-26 21:02:16,283 INFO L78 Accepts]: Start accepts. Automaton has 87826 states and 118388 transitions. Word has length 986 [2020-10-26 21:02:16,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:02:16,284 INFO L481 AbstractCegarLoop]: Abstraction has 87826 states and 118388 transitions. [2020-10-26 21:02:16,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:02:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand 87826 states and 118388 transitions. [2020-10-26 21:02:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-26 21:02:16,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:02:16,445 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:02:16,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:02:16,445 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:02:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:02:16,446 INFO L82 PathProgramCache]: Analyzing trace with hash 861608070, now seen corresponding path program 1 times [2020-10-26 21:02:16,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:02:16,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587399432] [2020-10-26 21:02:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:02:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:21,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:21,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-26 21:02:21,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:02:21,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-26 21:02:21,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:02:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:02:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 21:02:21,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:02:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:21,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:02:21,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:21,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:02:21,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:21,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:02:21,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:02:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:02:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:21,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:02:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:02:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:02:21,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:02:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:02:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:02:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:02:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:21,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:21,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:02:21,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:02:21,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:02:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:02:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:02:21,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:21,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 21:02:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:21,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:22,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:22,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:02:22,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:22,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 21:02:22,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:02:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:02:22,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 21:02:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 21:02:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:22,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:02:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:02:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:02:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-26 21:02:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:02:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:22,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 21:02:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:22,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:22,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:02:22,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:22,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 21:02:22,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:02:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:02:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:02:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 212 proven. 74 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-26 21:02:22,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587399432] [2020-10-26 21:02:22,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:02:22,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:02:22,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887173294] [2020-10-26 21:02:22,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:02:22,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:02:22,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:02:22,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:02:22,731 INFO L87 Difference]: Start difference. First operand 87826 states and 118388 transitions. Second operand 8 states. [2020-10-26 21:02:22,861 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:02:23,209 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93