/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 01:00:57,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 01:00:57,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 01:00:57,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 01:00:57,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 01:00:57,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 01:00:57,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 01:00:57,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 01:00:57,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 01:00:57,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 01:00:57,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 01:00:57,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 01:00:57,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 01:00:57,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 01:00:57,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 01:00:57,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 01:00:57,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 01:00:57,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 01:00:57,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 01:00:57,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 01:00:57,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 01:00:57,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 01:00:57,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 01:00:57,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 01:00:57,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 01:00:57,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 01:00:57,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 01:00:57,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 01:00:57,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 01:00:57,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 01:00:57,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 01:00:57,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 01:00:57,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 01:00:57,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 01:00:57,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 01:00:57,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 01:00:57,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 01:00:57,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 01:00:57,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 01:00:57,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 01:00:57,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 01:00:57,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 01:00:57,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 01:00:57,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 01:00:57,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 01:00:57,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 01:00:57,944 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 01:00:57,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 01:00:57,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 01:00:57,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 01:00:57,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 01:00:57,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 01:00:57,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 01:00:57,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 01:00:57,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 01:00:57,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 01:00:57,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 01:00:57,948 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 01:00:57,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 01:00:57,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 01:00:57,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 01:00:57,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 01:00:57,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 01:00:57,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:00:57,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 01:00:57,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 01:00:57,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 01:00:57,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 01:00:57,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 01:00:57,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 01:00:57,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 01:00:57,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 01:00:58,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 01:00:58,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 01:00:58,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 01:00:58,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 01:00:58,389 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 01:00:58,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2020-10-28 01:00:58,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60ecc4154/b9000e2e456243e2b0a073f82f108bd5/FLAG230361095 [2020-10-28 01:00:59,270 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 01:00:59,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2020-10-28 01:00:59,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60ecc4154/b9000e2e456243e2b0a073f82f108bd5/FLAG230361095 [2020-10-28 01:00:59,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60ecc4154/b9000e2e456243e2b0a073f82f108bd5 [2020-10-28 01:00:59,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 01:00:59,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 01:00:59,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 01:00:59,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 01:00:59,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 01:00:59,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:00:59" (1/1) ... [2020-10-28 01:00:59,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd2460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:59, skipping insertion in model container [2020-10-28 01:00:59,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:00:59" (1/1) ... [2020-10-28 01:00:59,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 01:00:59,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 01:01:00,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:01:00,045 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 01:01:00,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:01:00,202 INFO L208 MainTranslator]: Completed translation [2020-10-28 01:01:00,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00 WrapperNode [2020-10-28 01:01:00,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 01:01:00,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 01:01:00,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 01:01:00,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 01:01:00,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00" (1/1) ... [2020-10-28 01:01:00,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00" (1/1) ... [2020-10-28 01:01:00,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00" (1/1) ... [2020-10-28 01:01:00,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00" (1/1) ... [2020-10-28 01:01:00,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00" (1/1) ... [2020-10-28 01:01:00,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00" (1/1) ... [2020-10-28 01:01:00,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00" (1/1) ... [2020-10-28 01:01:00,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 01:01:00,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 01:01:00,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 01:01:00,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 01:01:00,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00" (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 [2020-10-28 01:01:00,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 01:01:00,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 01:01:00,459 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 01:01:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 01:01:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-28 01:01:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-28 01:01:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-28 01:01:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-28 01:01:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-28 01:01:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-28 01:01:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 01:01:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 01:01:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 01:01:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 01:01:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 01:01:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 01:01:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 01:01:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-28 01:01:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-28 01:01:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-28 01:01:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-28 01:01:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-28 01:01:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-28 01:01:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 01:01:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 01:01:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 01:01:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 01:01:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 01:01:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 01:01:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 01:01:01,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 01:01:01,791 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-28 01:01:01,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:01:01 BoogieIcfgContainer [2020-10-28 01:01:01,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 01:01:01,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 01:01:01,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 01:01:01,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 01:01:01,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:00:59" (1/3) ... [2020-10-28 01:01:01,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79af0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:01:01, skipping insertion in model container [2020-10-28 01:01:01,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:00" (2/3) ... [2020-10-28 01:01:01,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79af0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:01:01, skipping insertion in model container [2020-10-28 01:01:01,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:01:01" (3/3) ... [2020-10-28 01:01:01,804 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.2.cil.c [2020-10-28 01:01:01,816 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 01:01:01,822 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 01:01:01,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 01:01:01,866 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 01:01:01,866 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 01:01:01,867 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 01:01:01,867 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 01:01:01,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 01:01:01,867 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 01:01:01,867 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 01:01:01,868 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 01:01:01,912 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-10-28 01:01:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 01:01:01,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:01,927 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] [2020-10-28 01:01:01,927 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:01,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2068796717, now seen corresponding path program 1 times [2020-10-28 01:01:01,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:01,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29120878] [2020-10-28 01:01:01,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:02,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:04,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:06,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:07,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:07,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 01:01:07,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:01:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:01:07,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 01:01:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:07,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 01:01:07,540 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:01:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:07,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:07,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:07,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:07,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:01:07,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:07,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:07,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:07,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29120878] [2020-10-28 01:01:07,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:07,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 01:01:07,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130161706] [2020-10-28 01:01:07,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 01:01:07,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:07,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 01:01:07,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 01:01:07,623 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 3 states. [2020-10-28 01:01:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:09,314 INFO L93 Difference]: Finished difference Result 628 states and 1113 transitions. [2020-10-28 01:01:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 01:01:09,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-10-28 01:01:09,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:09,332 INFO L225 Difference]: With dead ends: 628 [2020-10-28 01:01:09,332 INFO L226 Difference]: Without dead ends: 343 [2020-10-28 01:01:09,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 01:01:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-28 01:01:09,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 292. [2020-10-28 01:01:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-28 01:01:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 489 transitions. [2020-10-28 01:01:09,453 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 489 transitions. Word has length 40 [2020-10-28 01:01:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:09,454 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 489 transitions. [2020-10-28 01:01:09,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 01:01:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 489 transitions. [2020-10-28 01:01:09,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 01:01:09,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:09,465 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] [2020-10-28 01:01:09,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 01:01:09,467 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:09,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1284351722, now seen corresponding path program 1 times [2020-10-28 01:01:09,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:09,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57534621] [2020-10-28 01:01:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:09,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:10,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:11,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:14,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:14,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 01:01:14,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:01:14,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 01:01:14,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:01:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 01:01:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:01:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:01:14,868 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:01:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:14,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:14,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:14,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:14,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:14,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:01:14,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57534621] [2020-10-28 01:01:14,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:14,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:14,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228886077] [2020-10-28 01:01:14,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:14,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:14,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:14,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:14,921 INFO L87 Difference]: Start difference. First operand 292 states and 489 transitions. Second operand 4 states. [2020-10-28 01:01:15,385 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:01:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:17,750 INFO L93 Difference]: Finished difference Result 857 states and 1404 transitions. [2020-10-28 01:01:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:17,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-28 01:01:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:17,760 INFO L225 Difference]: With dead ends: 857 [2020-10-28 01:01:17,760 INFO L226 Difference]: Without dead ends: 591 [2020-10-28 01:01:17,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-28 01:01:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 523. [2020-10-28 01:01:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-10-28 01:01:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 853 transitions. [2020-10-28 01:01:17,879 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 853 transitions. Word has length 41 [2020-10-28 01:01:17,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:17,879 INFO L481 AbstractCegarLoop]: Abstraction has 523 states and 853 transitions. [2020-10-28 01:01:17,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 853 transitions. [2020-10-28 01:01:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 01:01:17,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:17,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:01:17,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 01:01:17,884 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:17,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:17,884 INFO L82 PathProgramCache]: Analyzing trace with hash -994477708, now seen corresponding path program 1 times [2020-10-28 01:01:17,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:17,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921989193] [2020-10-28 01:01:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:17,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:22,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 01:01:22,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 01:01:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:01:22,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:01:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 01:01:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 01:01:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:01:23,221 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:01:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:23,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:23,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:23,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:23,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:01:23,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:23,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921989193] [2020-10-28 01:01:23,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:23,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:23,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835202867] [2020-10-28 01:01:23,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:23,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:23,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:23,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:23,256 INFO L87 Difference]: Start difference. First operand 523 states and 853 transitions. Second operand 4 states. [2020-10-28 01:01:23,516 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:01:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:25,833 INFO L93 Difference]: Finished difference Result 1519 states and 2476 transitions. [2020-10-28 01:01:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:25,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-28 01:01:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:25,845 INFO L225 Difference]: With dead ends: 1519 [2020-10-28 01:01:25,846 INFO L226 Difference]: Without dead ends: 1029 [2020-10-28 01:01:25,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:25,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-10-28 01:01:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 933. [2020-10-28 01:01:25,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-10-28 01:01:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1542 transitions. [2020-10-28 01:01:25,937 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1542 transitions. Word has length 43 [2020-10-28 01:01:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:25,938 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 1542 transitions. [2020-10-28 01:01:25,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1542 transitions. [2020-10-28 01:01:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 01:01:25,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:25,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:01:25,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 01:01:25,942 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:25,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1293148490, now seen corresponding path program 1 times [2020-10-28 01:01:25,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:25,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218854960] [2020-10-28 01:01:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:26,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:26,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:26,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:27,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:30,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:30,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:30,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 01:01:30,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:01:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:01:30,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:01:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 01:01:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 01:01:30,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:31,244 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:01:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:31,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:31,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:31,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:31,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:01:31,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:31,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:31,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218854960] [2020-10-28 01:01:31,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:31,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:31,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069223106] [2020-10-28 01:01:31,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:31,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:31,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:31,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:31,282 INFO L87 Difference]: Start difference. First operand 933 states and 1542 transitions. Second operand 4 states. [2020-10-28 01:01:31,554 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 01:01:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:33,972 INFO L93 Difference]: Finished difference Result 2757 states and 4551 transitions. [2020-10-28 01:01:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:33,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-28 01:01:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:33,992 INFO L225 Difference]: With dead ends: 2757 [2020-10-28 01:01:33,992 INFO L226 Difference]: Without dead ends: 1869 [2020-10-28 01:01:34,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2020-10-28 01:01:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1709. [2020-10-28 01:01:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-10-28 01:01:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2800 transitions. [2020-10-28 01:01:34,204 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2800 transitions. Word has length 43 [2020-10-28 01:01:34,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:34,207 INFO L481 AbstractCegarLoop]: Abstraction has 1709 states and 2800 transitions. [2020-10-28 01:01:34,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2800 transitions. [2020-10-28 01:01:34,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 01:01:34,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:34,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:01:34,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 01:01:34,213 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:34,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:34,213 INFO L82 PathProgramCache]: Analyzing trace with hash 289938913, now seen corresponding path program 1 times [2020-10-28 01:01:34,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:34,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691822078] [2020-10-28 01:01:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:35,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:35,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:39,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:39,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 01:01:39,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:01:39,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:01:39,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:01:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 01:01:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 01:01:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:39,565 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:01:39,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:39,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:39,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:39,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:39,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:39,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:01:39,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:39,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:39,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:39,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691822078] [2020-10-28 01:01:39,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:39,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:39,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151718126] [2020-10-28 01:01:39,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:39,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:39,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:39,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:39,604 INFO L87 Difference]: Start difference. First operand 1709 states and 2800 transitions. Second operand 4 states. [2020-10-28 01:01:39,984 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:01:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:42,295 INFO L93 Difference]: Finished difference Result 4305 states and 7154 transitions. [2020-10-28 01:01:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:42,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-28 01:01:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:42,315 INFO L225 Difference]: With dead ends: 4305 [2020-10-28 01:01:42,315 INFO L226 Difference]: Without dead ends: 2613 [2020-10-28 01:01:42,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2020-10-28 01:01:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 2409. [2020-10-28 01:01:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-10-28 01:01:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3783 transitions. [2020-10-28 01:01:42,561 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3783 transitions. Word has length 43 [2020-10-28 01:01:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:42,561 INFO L481 AbstractCegarLoop]: Abstraction has 2409 states and 3783 transitions. [2020-10-28 01:01:42,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3783 transitions. [2020-10-28 01:01:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 01:01:42,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:42,565 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] [2020-10-28 01:01:42,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 01:01:42,566 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:42,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:42,566 INFO L82 PathProgramCache]: Analyzing trace with hash 241064860, now seen corresponding path program 1 times [2020-10-28 01:01:42,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:42,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544195023] [2020-10-28 01:01:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:42,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:42,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:42,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:43,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:43,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:46,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:46,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 01:01:46,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:01:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3891 [2020-10-28 01:01:46,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:01:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 01:01:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:01:46,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:46,836 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:01:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:46,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:46,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:46,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:46,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:01:46,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:46,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:46,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:46,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544195023] [2020-10-28 01:01:46,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:46,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:46,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382047093] [2020-10-28 01:01:46,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:46,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:46,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:46,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:46,872 INFO L87 Difference]: Start difference. First operand 2409 states and 3783 transitions. Second operand 4 states. [2020-10-28 01:01:47,218 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 01:01:49,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:49,415 INFO L93 Difference]: Finished difference Result 7175 states and 11325 transitions. [2020-10-28 01:01:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:49,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-28 01:01:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:49,449 INFO L225 Difference]: With dead ends: 7175 [2020-10-28 01:01:49,449 INFO L226 Difference]: Without dead ends: 4829 [2020-10-28 01:01:49,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:49,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2020-10-28 01:01:49,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 3941. [2020-10-28 01:01:49,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3941 states. [2020-10-28 01:01:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 6230 transitions. [2020-10-28 01:01:49,858 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 6230 transitions. Word has length 44 [2020-10-28 01:01:49,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:49,860 INFO L481 AbstractCegarLoop]: Abstraction has 3941 states and 6230 transitions. [2020-10-28 01:01:49,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 6230 transitions. [2020-10-28 01:01:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 01:01:49,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:49,868 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] [2020-10-28 01:01:49,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 01:01:49,869 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:49,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:49,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1085070362, now seen corresponding path program 1 times [2020-10-28 01:01:49,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:49,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999837316] [2020-10-28 01:01:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:50,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:50,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:52,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 01:01:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:01:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-10-28 01:01:52,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:01:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:01:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:01:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:52,581 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:01:52,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:52,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:52,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:52,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:01:52,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:52,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999837316] [2020-10-28 01:01:52,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:52,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:52,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690152175] [2020-10-28 01:01:52,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:52,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:52,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:52,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:52,611 INFO L87 Difference]: Start difference. First operand 3941 states and 6230 transitions. Second operand 4 states. [2020-10-28 01:01:52,853 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 01:01:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:54,684 INFO L93 Difference]: Finished difference Result 8193 states and 13139 transitions. [2020-10-28 01:01:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:54,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-28 01:01:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:54,713 INFO L225 Difference]: With dead ends: 8193 [2020-10-28 01:01:54,714 INFO L226 Difference]: Without dead ends: 4379 [2020-10-28 01:01:54,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:54,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2020-10-28 01:01:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 3933. [2020-10-28 01:01:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3933 states. [2020-10-28 01:01:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3933 states to 3933 states and 6121 transitions. [2020-10-28 01:01:55,179 INFO L78 Accepts]: Start accepts. Automaton has 3933 states and 6121 transitions. Word has length 44 [2020-10-28 01:01:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:55,179 INFO L481 AbstractCegarLoop]: Abstraction has 3933 states and 6121 transitions. [2020-10-28 01:01:55,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3933 states and 6121 transitions. [2020-10-28 01:01:55,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 01:01:55,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:55,184 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] [2020-10-28 01:01:55,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 01:01:55,185 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:55,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1617545153, now seen corresponding path program 1 times [2020-10-28 01:01:55,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:55,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313657678] [2020-10-28 01:01:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:57,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:59,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:59,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 01:01:59,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:01:59,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3960 [2020-10-28 01:01:59,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:01:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 01:01:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:01:59,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:59,400 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:01:59,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:59,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:59,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:59,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:01:59,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:59,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:59,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:59,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313657678] [2020-10-28 01:01:59,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:59,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:59,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454840916] [2020-10-28 01:01:59,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:59,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:59,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:59,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:59,434 INFO L87 Difference]: Start difference. First operand 3933 states and 6121 transitions. Second operand 4 states. [2020-10-28 01:01:59,819 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:02:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:02,434 INFO L93 Difference]: Finished difference Result 8889 states and 14200 transitions. [2020-10-28 01:02:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:02:02,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-28 01:02:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:02,469 INFO L225 Difference]: With dead ends: 8889 [2020-10-28 01:02:02,469 INFO L226 Difference]: Without dead ends: 5051 [2020-10-28 01:02:02,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:02:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2020-10-28 01:02:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 4680. [2020-10-28 01:02:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4680 states. [2020-10-28 01:02:02,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4680 states to 4680 states and 7043 transitions. [2020-10-28 01:02:02,961 INFO L78 Accepts]: Start accepts. Automaton has 4680 states and 7043 transitions. Word has length 44 [2020-10-28 01:02:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:02,962 INFO L481 AbstractCegarLoop]: Abstraction has 4680 states and 7043 transitions. [2020-10-28 01:02:02,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:02:02,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4680 states and 7043 transitions. [2020-10-28 01:02:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 01:02:02,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:02,968 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] [2020-10-28 01:02:02,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 01:02:02,968 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:02,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:02,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1028548629, now seen corresponding path program 1 times [2020-10-28 01:02:02,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:02,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853774494] [2020-10-28 01:02:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:03,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:03,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:03,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:03,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:03,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:04,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:04,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 01:02:04,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:02:04,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-28 01:02:04,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:02:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:02:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 01:02:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:05,039 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:05,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:05,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:05,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:05,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:02:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:02:05,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853774494] [2020-10-28 01:02:05,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:05,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 01:02:05,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170554732] [2020-10-28 01:02:05,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:02:05,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:05,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:02:05,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:02:05,067 INFO L87 Difference]: Start difference. First operand 4680 states and 7043 transitions. Second operand 5 states. [2020-10-28 01:02:05,329 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:02:06,059 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 01:02:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:08,401 INFO L93 Difference]: Finished difference Result 9989 states and 15181 transitions. [2020-10-28 01:02:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:02:08,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-28 01:02:08,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:08,465 INFO L225 Difference]: With dead ends: 9989 [2020-10-28 01:02:08,465 INFO L226 Difference]: Without dead ends: 6123 [2020-10-28 01:02:08,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:02:08,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2020-10-28 01:02:09,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 5666. [2020-10-28 01:02:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5666 states. [2020-10-28 01:02:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5666 states to 5666 states and 8335 transitions. [2020-10-28 01:02:09,168 INFO L78 Accepts]: Start accepts. Automaton has 5666 states and 8335 transitions. Word has length 45 [2020-10-28 01:02:09,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:09,168 INFO L481 AbstractCegarLoop]: Abstraction has 5666 states and 8335 transitions. [2020-10-28 01:02:09,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:02:09,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5666 states and 8335 transitions. [2020-10-28 01:02:09,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 01:02:09,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:09,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:02:09,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 01:02:09,172 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:09,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:09,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1000538618, now seen corresponding path program 1 times [2020-10-28 01:02:09,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:09,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540360473] [2020-10-28 01:02:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:10,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:10,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 01:02:10,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:02:10,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-10-28 01:02:10,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:02:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:02:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:02:10,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:10,587 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:10,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:10,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:10,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 01:02:10,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:02:10,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540360473] [2020-10-28 01:02:10,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:10,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:02:10,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941399128] [2020-10-28 01:02:10,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:02:10,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:10,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:02:10,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:02:10,634 INFO L87 Difference]: Start difference. First operand 5666 states and 8335 transitions. Second operand 4 states. [2020-10-28 01:02:10,929 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 01:02:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:13,833 INFO L93 Difference]: Finished difference Result 14036 states and 22179 transitions. [2020-10-28 01:02:13,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:02:13,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-28 01:02:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:13,880 INFO L225 Difference]: With dead ends: 14036 [2020-10-28 01:02:13,881 INFO L226 Difference]: Without dead ends: 8421 [2020-10-28 01:02:13,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:02:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8421 states. [2020-10-28 01:02:14,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8421 to 7769. [2020-10-28 01:02:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7769 states. [2020-10-28 01:02:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7769 states to 7769 states and 12337 transitions. [2020-10-28 01:02:14,965 INFO L78 Accepts]: Start accepts. Automaton has 7769 states and 12337 transitions. Word has length 52 [2020-10-28 01:02:14,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:14,965 INFO L481 AbstractCegarLoop]: Abstraction has 7769 states and 12337 transitions. [2020-10-28 01:02:14,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:02:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand 7769 states and 12337 transitions. [2020-10-28 01:02:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 01:02:14,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:14,970 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] [2020-10-28 01:02:14,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 01:02:14,971 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:14,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:14,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1537161524, now seen corresponding path program 1 times [2020-10-28 01:02:14,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:14,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533997773] [2020-10-28 01:02:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:15,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:15,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:15,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:15,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 01:02:15,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:02:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-28 01:02:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:02:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 01:02:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 01:02:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:15,903 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:15,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:15,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:15,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:15,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:15,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:02:15,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:15,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:02:15,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533997773] [2020-10-28 01:02:15,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:15,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:02:15,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338965295] [2020-10-28 01:02:15,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:02:15,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:15,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:02:15,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:02:15,927 INFO L87 Difference]: Start difference. First operand 7769 states and 12337 transitions. Second operand 4 states. [2020-10-28 01:02:16,445 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:02:19,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:19,185 INFO L93 Difference]: Finished difference Result 12011 states and 21342 transitions. [2020-10-28 01:02:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:02:19,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-28 01:02:19,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:19,253 INFO L225 Difference]: With dead ends: 12011 [2020-10-28 01:02:19,254 INFO L226 Difference]: Without dead ends: 12006 [2020-10-28 01:02:19,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:02:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12006 states. [2020-10-28 01:02:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12006 to 10513. [2020-10-28 01:02:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10513 states. [2020-10-28 01:02:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10513 states to 10513 states and 18478 transitions. [2020-10-28 01:02:21,150 INFO L78 Accepts]: Start accepts. Automaton has 10513 states and 18478 transitions. Word has length 64 [2020-10-28 01:02:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:21,150 INFO L481 AbstractCegarLoop]: Abstraction has 10513 states and 18478 transitions. [2020-10-28 01:02:21,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:02:21,151 INFO L276 IsEmpty]: Start isEmpty. Operand 10513 states and 18478 transitions. [2020-10-28 01:02:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 01:02:21,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:21,161 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] [2020-10-28 01:02:21,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 01:02:21,161 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:21,162 INFO L82 PathProgramCache]: Analyzing trace with hash 658738419, now seen corresponding path program 1 times [2020-10-28 01:02:21,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:21,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139584146] [2020-10-28 01:02:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:21,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:22,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:22,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 01:02:22,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:02:22,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1643 [2020-10-28 01:02:22,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:02:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 01:02:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 01:02:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:23,076 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:23,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:23,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:23,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:23,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:02:23,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:23,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:23,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:02:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:23,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:23,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:02:23,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:02:23,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:02:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:02:23,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:02:23,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139584146] [2020-10-28 01:02:23,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:23,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 01:02:23,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890397065] [2020-10-28 01:02:23,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:02:23,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:23,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:02:23,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:02:23,230 INFO L87 Difference]: Start difference. First operand 10513 states and 18478 transitions. Second operand 7 states. [2020-10-28 01:02:23,762 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 01:02:24,688 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:02:25,987 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 01:02:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:30,308 INFO L93 Difference]: Finished difference Result 33907 states and 72032 transitions. [2020-10-28 01:02:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 01:02:30,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-28 01:02:30,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:30,483 INFO L225 Difference]: With dead ends: 33907 [2020-10-28 01:02:30,483 INFO L226 Difference]: Without dead ends: 23445 [2020-10-28 01:02:30,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:02:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23445 states. [2020-10-28 01:02:35,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23445 to 20109. [2020-10-28 01:02:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20109 states. [2020-10-28 01:02:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20109 states to 20109 states and 42402 transitions. [2020-10-28 01:02:35,578 INFO L78 Accepts]: Start accepts. Automaton has 20109 states and 42402 transitions. Word has length 77 [2020-10-28 01:02:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:35,579 INFO L481 AbstractCegarLoop]: Abstraction has 20109 states and 42402 transitions. [2020-10-28 01:02:35,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:02:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 20109 states and 42402 transitions. [2020-10-28 01:02:35,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 01:02:35,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:35,590 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] [2020-10-28 01:02:35,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 01:02:35,590 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:35,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:35,591 INFO L82 PathProgramCache]: Analyzing trace with hash 897584340, now seen corresponding path program 1 times [2020-10-28 01:02:35,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:35,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106161158] [2020-10-28 01:02:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:35,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:36,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:37,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:37,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 01:02:37,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:02:37,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2141 [2020-10-28 01:02:37,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:02:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 01:02:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 01:02:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:38,022 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:38,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:38,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:38,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:38,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:02:38,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:38,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:02:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:38,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:38,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:02:38,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:38,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 01:02:38,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:02:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:02:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:02:38,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106161158] [2020-10-28 01:02:38,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:38,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 01:02:38,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570360556] [2020-10-28 01:02:38,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 01:02:38,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:38,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 01:02:38,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 01:02:38,197 INFO L87 Difference]: Start difference. First operand 20109 states and 42402 transitions. Second operand 10 states. [2020-10-28 01:02:38,452 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:02:38,890 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 01:02:39,227 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 01:02:40,249 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 01:02:40,560 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 01:02:41,502 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 01:02:41,934 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 01:02:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:46,249 INFO L93 Difference]: Finished difference Result 49301 states and 118890 transitions. [2020-10-28 01:02:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 01:02:46,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-28 01:02:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:46,786 INFO L225 Difference]: With dead ends: 49301 [2020-10-28 01:02:46,786 INFO L226 Difference]: Without dead ends: 29243 [2020-10-28 01:02:47,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-28 01:02:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29243 states. [2020-10-28 01:02:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29243 to 24961. [2020-10-28 01:02:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24961 states. [2020-10-28 01:02:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24961 states to 24961 states and 54574 transitions. [2020-10-28 01:02:54,443 INFO L78 Accepts]: Start accepts. Automaton has 24961 states and 54574 transitions. Word has length 78 [2020-10-28 01:02:54,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:54,444 INFO L481 AbstractCegarLoop]: Abstraction has 24961 states and 54574 transitions. [2020-10-28 01:02:54,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 01:02:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 24961 states and 54574 transitions. [2020-10-28 01:02:54,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 01:02:54,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:54,465 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-28 01:02:54,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 01:02:54,465 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:54,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:54,466 INFO L82 PathProgramCache]: Analyzing trace with hash 301686305, now seen corresponding path program 1 times [2020-10-28 01:02:54,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:54,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713796824] [2020-10-28 01:02:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:54,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:54,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:54,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:54,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:57,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:57,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:59,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:59,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 01:02:59,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:02:59,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:02:59,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:02:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 01:02:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 01:02:59,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:59,750 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:59,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:59,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:59,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:59,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:59,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:02:59,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:59,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:59,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:59,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:59,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 01:02:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:59,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:59,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:02:59,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:02:59,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:59,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 01:02:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:59,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:59,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:02:59,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:02:59,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:02:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 01:02:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 01:02:59,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713796824] [2020-10-28 01:02:59,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:59,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 01:02:59,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537737546] [2020-10-28 01:02:59,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:02:59,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:59,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:02:59,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:02:59,926 INFO L87 Difference]: Start difference. First operand 24961 states and 54574 transitions. Second operand 5 states. [2020-10-28 01:03:00,223 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:03:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:07,191 INFO L93 Difference]: Finished difference Result 61372 states and 160617 transitions. [2020-10-28 01:03:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:03:07,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-28 01:03:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:07,602 INFO L225 Difference]: With dead ends: 61372 [2020-10-28 01:03:07,602 INFO L226 Difference]: Without dead ends: 36462 [2020-10-28 01:03:08,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:03:09,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36462 states. [2020-10-28 01:03:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36462 to 34732. [2020-10-28 01:03:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34732 states. [2020-10-28 01:03:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34732 states to 34732 states and 80436 transitions. [2020-10-28 01:03:19,139 INFO L78 Accepts]: Start accepts. Automaton has 34732 states and 80436 transitions. Word has length 99 [2020-10-28 01:03:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:03:19,139 INFO L481 AbstractCegarLoop]: Abstraction has 34732 states and 80436 transitions. [2020-10-28 01:03:19,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:03:19,140 INFO L276 IsEmpty]: Start isEmpty. Operand 34732 states and 80436 transitions. [2020-10-28 01:03:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 01:03:19,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:19,166 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:03:19,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 01:03:19,166 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:19,166 INFO L82 PathProgramCache]: Analyzing trace with hash -554537686, now seen corresponding path program 1 times [2020-10-28 01:03:19,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:19,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320904124] [2020-10-28 01:03:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:19,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:19,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:24,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 01:03:24,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:03:24,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 01:03:24,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 01:03:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 01:03:24,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:24,437 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:03:24,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:24,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:24,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:03:24,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:24,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:03:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:24,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:03:24,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:03:24,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:03:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 01:03:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:24,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:03:24,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:03:24,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 01:03:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:24,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 01:03:24,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320904124] [2020-10-28 01:03:24,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:03:24,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 01:03:24,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691496833] [2020-10-28 01:03:24,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:03:24,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:03:24,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:03:24,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:03:24,585 INFO L87 Difference]: Start difference. First operand 34732 states and 80436 transitions. Second operand 5 states. [2020-10-28 01:03:24,898 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:03:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:31,188 INFO L93 Difference]: Finished difference Result 68844 states and 182077 transitions. [2020-10-28 01:03:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:03:31,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-28 01:03:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:31,466 INFO L225 Difference]: With dead ends: 68844 [2020-10-28 01:03:31,467 INFO L226 Difference]: Without dead ends: 32907 [2020-10-28 01:03:32,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:03:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32907 states. [2020-10-28 01:03:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32907 to 31290. [2020-10-28 01:03:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31290 states. [2020-10-28 01:03:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31290 states to 31290 states and 71143 transitions. [2020-10-28 01:03:40,189 INFO L78 Accepts]: Start accepts. Automaton has 31290 states and 71143 transitions. Word has length 94 [2020-10-28 01:03:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:03:40,190 INFO L481 AbstractCegarLoop]: Abstraction has 31290 states and 71143 transitions. [2020-10-28 01:03:40,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:03:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 31290 states and 71143 transitions. [2020-10-28 01:03:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 01:03:40,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:40,207 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 01:03:40,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 01:03:40,207 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:40,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1786908431, now seen corresponding path program 1 times [2020-10-28 01:03:40,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:40,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946557100] [2020-10-28 01:03:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:40,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:40,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:42,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:42,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:45,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:45,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 01:03:45,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 01:03:45,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 01:03:45,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 01:03:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:03:45,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:45,506 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:03:45,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:45,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:45,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:45,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:03:45,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:45,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:45,688 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:03:45,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 01:03:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:45,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:45,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:45,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:03:45,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 01:03:45,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:45,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:03:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:45,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:45,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:03:45,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:45,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:03:45,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:45,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 01:03:45,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946557100] [2020-10-28 01:03:45,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:03:45,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 01:03:45,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938614633] [2020-10-28 01:03:45,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:03:45,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:03:45,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:03:45,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:03:45,848 INFO L87 Difference]: Start difference. First operand 31290 states and 71143 transitions. Second operand 6 states. [2020-10-28 01:03:46,707 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:03:53,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:53,082 INFO L93 Difference]: Finished difference Result 69441 states and 199031 transitions. [2020-10-28 01:03:53,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:03:53,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-28 01:03:53,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:53,430 INFO L225 Difference]: With dead ends: 69441 [2020-10-28 01:03:53,430 INFO L226 Difference]: Without dead ends: 40337 [2020-10-28 01:03:55,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:03:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40337 states. [2020-10-28 01:04:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40337 to 39235. [2020-10-28 01:04:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39235 states. [2020-10-28 01:04:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39235 states to 39235 states and 95541 transitions. [2020-10-28 01:04:08,225 INFO L78 Accepts]: Start accepts. Automaton has 39235 states and 95541 transitions. Word has length 111 [2020-10-28 01:04:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:04:08,226 INFO L481 AbstractCegarLoop]: Abstraction has 39235 states and 95541 transitions. [2020-10-28 01:04:08,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:04:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 39235 states and 95541 transitions. [2020-10-28 01:04:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 01:04:08,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:04:08,253 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:04:08,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 01:04:08,253 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:04:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:04:08,253 INFO L82 PathProgramCache]: Analyzing trace with hash -532714600, now seen corresponding path program 1 times [2020-10-28 01:04:08,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:04:08,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816408640] [2020-10-28 01:04:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:04:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:08,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:08,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:08,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:09,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:09,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:13,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 01:04:13,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:04:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 01:04:13,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:04:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 01:04:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 01:04:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:13,547 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:04:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:04:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:13,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:13,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:04:13,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:04:13,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:04:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:04:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:13,727 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:04:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 01:04:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:13,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 01:04:13,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:04:13,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:04:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:04:13,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 01:04:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:13,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:04:13,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:13,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:04:13,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:04:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:04:13,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 01:04:13,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816408640] [2020-10-28 01:04:13,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:04:13,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 01:04:13,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132891464] [2020-10-28 01:04:13,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:04:13,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:04:13,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:04:13,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:04:13,886 INFO L87 Difference]: Start difference. First operand 39235 states and 95541 transitions. Second operand 6 states. [2020-10-28 01:04:14,484 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 01:04:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:04:21,540 INFO L93 Difference]: Finished difference Result 72854 states and 215478 transitions. [2020-10-28 01:04:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:04:21,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-28 01:04:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:04:21,904 INFO L225 Difference]: With dead ends: 72854 [2020-10-28 01:04:21,904 INFO L226 Difference]: Without dead ends: 35805 [2020-10-28 01:04:23,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:04:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35805 states.