/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:49:09,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:49:09,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:49:09,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:49:09,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:49:09,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:49:09,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:49:09,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:49:09,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:49:09,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:49:09,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:49:09,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:49:09,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:49:09,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:49:09,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:49:09,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:49:09,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:49:09,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:49:09,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:49:09,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:49:09,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:49:09,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:49:09,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:49:09,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:49:09,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:49:09,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:49:09,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:49:09,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:49:09,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:49:09,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:49:09,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:49:09,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:49:09,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:49:09,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:49:09,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:49:09,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:49:09,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:49:09,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:49:09,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:49:09,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:49:09,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:49:09,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:49:09,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:49:09,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:49:09,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:49:09,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:49:09,750 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:49:09,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:49:09,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:49:09,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:49:09,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:49:09,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:49:09,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:49:09,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:49:09,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:49:09,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:49:09,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:49:09,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:49:09,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:49:09,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:49:09,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:49:09,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:49:09,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:49:09,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:49:09,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:49:09,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:49:09,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:49:09,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:49:09,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:49:09,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:49:09,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:49:09,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:49:10,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:49:10,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:49:10,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:49:10,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:49:10,281 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:49:10,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-27 17:49:10,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27c53690b/a77ae1fc85b5446ba61b116171f70c70/FLAG13c9b4a3e [2020-10-27 17:49:11,519 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:49:11,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-27 17:49:11,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27c53690b/a77ae1fc85b5446ba61b116171f70c70/FLAG13c9b4a3e [2020-10-27 17:49:11,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27c53690b/a77ae1fc85b5446ba61b116171f70c70 [2020-10-27 17:49:11,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:49:11,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:49:11,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:49:11,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:49:11,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:49:11,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:49:11" (1/1) ... [2020-10-27 17:49:11,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305c2c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:11, skipping insertion in model container [2020-10-27 17:49:11,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:49:11" (1/1) ... [2020-10-27 17:49:12,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:49:12,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:49:13,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:49:13,831 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:49:14,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:49:14,668 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:49:14,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14 WrapperNode [2020-10-27 17:49:14,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:49:14,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:49:14,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:49:14,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:49:14,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14" (1/1) ... [2020-10-27 17:49:14,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14" (1/1) ... [2020-10-27 17:49:14,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14" (1/1) ... [2020-10-27 17:49:14,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14" (1/1) ... [2020-10-27 17:49:14,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14" (1/1) ... [2020-10-27 17:49:14,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14" (1/1) ... [2020-10-27 17:49:15,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14" (1/1) ... [2020-10-27 17:49:15,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:49:15,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:49:15,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:49:15,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:49:15,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:49:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:49:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:49:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:49:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:49:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:49:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:49:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:49:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:49:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:49:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:49:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:49:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:49:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:49:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:49:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:49:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:49:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:49:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:49:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:49:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:49:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:49:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:49:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:49:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:49:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:49:20,988 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:49:20,988 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:49:20,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:49:20 BoogieIcfgContainer [2020-10-27 17:49:20,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:49:20,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:49:20,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:49:21,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:49:21,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:49:11" (1/3) ... [2020-10-27 17:49:21,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56343c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:49:21, skipping insertion in model container [2020-10-27 17:49:21,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14" (2/3) ... [2020-10-27 17:49:21,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56343c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:49:21, skipping insertion in model container [2020-10-27 17:49:21,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:49:20" (3/3) ... [2020-10-27 17:49:21,007 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2020-10-27 17:49:21,021 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:49:21,028 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:49:21,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:49:21,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:49:21,080 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:49:21,080 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:49:21,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:49:21,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:49:21,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:49:21,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:49:21,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:49:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:49:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 17:49:21,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:49:21,136 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] [2020-10-27 17:49:21,136 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:49:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:49:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash -88085652, now seen corresponding path program 1 times [2020-10-27 17:49:21,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:49:21,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776384251] [2020-10-27 17:49:21,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:49:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:22,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:22,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 17:49:22,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-27 17:49:22,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:49:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:49:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 17:49:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:49:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:49:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:22,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:22,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:49:22,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 17:49:22,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:49:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:49:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:49:22,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776384251] [2020-10-27 17:49:22,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:49:22,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:49:22,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461493385] [2020-10-27 17:49:22,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:49:22,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:49:22,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:49:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:49:22,361 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:49:34,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:49:34,732 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-27 17:49:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:49:34,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-27 17:49:34,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:49:34,769 INFO L225 Difference]: With dead ends: 2492 [2020-10-27 17:49:34,769 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:49:34,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:49:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:49:34,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-27 17:49:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-27 17:49:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-27 17:49:34,996 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 68 [2020-10-27 17:49:35,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:49:35,000 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-27 17:49:35,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:49:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-27 17:49:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 17:49:35,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:49:35,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:49:35,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:49:35,020 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:49:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:49:35,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1516880606, now seen corresponding path program 1 times [2020-10-27 17:49:35,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:49:35,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811708300] [2020-10-27 17:49:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:49:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:35,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:35,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:36,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:36,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 17:49:36,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:49:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1615 [2020-10-27 17:49:36,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:49:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 17:49:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:49:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:49:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:49:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:36,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:36,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:49:36,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:36,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:49:36,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:49:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:49:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:37,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:37,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:37,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:49:37,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 17:49:37,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:49:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 17:49:37,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:49:37,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811708300] [2020-10-27 17:49:37,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:49:37,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:49:37,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129076471] [2020-10-27 17:49:37,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:49:37,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:49:37,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:49:37,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:49:37,334 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 5 states. [2020-10-27 17:49:51,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:49:51,253 INFO L93 Difference]: Finished difference Result 4688 states and 7522 transitions. [2020-10-27 17:49:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:49:51,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 17:49:51,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:49:51,276 INFO L225 Difference]: With dead ends: 4688 [2020-10-27 17:49:51,276 INFO L226 Difference]: Without dead ends: 3129 [2020-10-27 17:49:51,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:49:51,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2020-10-27 17:49:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3121. [2020-10-27 17:49:51,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2020-10-27 17:49:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4528 transitions. [2020-10-27 17:49:51,389 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4528 transitions. Word has length 147 [2020-10-27 17:49:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:49:51,390 INFO L481 AbstractCegarLoop]: Abstraction has 3121 states and 4528 transitions. [2020-10-27 17:49:51,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:49:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4528 transitions. [2020-10-27 17:49:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 17:49:51,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:49:51,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:49:51,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:49:51,394 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:49:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:49:51,395 INFO L82 PathProgramCache]: Analyzing trace with hash 592040978, now seen corresponding path program 1 times [2020-10-27 17:49:51,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:49:51,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623159609] [2020-10-27 17:49:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:49:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:51,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:52,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:52,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:52,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 17:49:52,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:49:52,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1487 [2020-10-27 17:49:52,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:49:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 17:49:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:49:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:49:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:53,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:53,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:49:53,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:49:53,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:53,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:49:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:53,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:53,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 17:49:53,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 17:49:53,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:49:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 17:49:53,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:49:53,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623159609] [2020-10-27 17:49:53,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:49:53,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:49:53,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68546023] [2020-10-27 17:49:53,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:49:53,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:49:53,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:49:53,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:49:53,286 INFO L87 Difference]: Start difference. First operand 3121 states and 4528 transitions. Second operand 5 states. [2020-10-27 17:50:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:50:07,257 INFO L93 Difference]: Finished difference Result 7797 states and 11643 transitions. [2020-10-27 17:50:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:50:07,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-27 17:50:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:50:07,293 INFO L225 Difference]: With dead ends: 7797 [2020-10-27 17:50:07,293 INFO L226 Difference]: Without dead ends: 4682 [2020-10-27 17:50:07,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:50:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2020-10-27 17:50:07,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4674. [2020-10-27 17:50:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4674 states. [2020-10-27 17:50:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6272 transitions. [2020-10-27 17:50:07,489 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6272 transitions. Word has length 155 [2020-10-27 17:50:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:50:07,491 INFO L481 AbstractCegarLoop]: Abstraction has 4674 states and 6272 transitions. [2020-10-27 17:50:07,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:50:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6272 transitions. [2020-10-27 17:50:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 17:50:07,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:07,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:50:07,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:50:07,501 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:07,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:07,502 INFO L82 PathProgramCache]: Analyzing trace with hash 150874812, now seen corresponding path program 1 times [2020-10-27 17:50:07,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:07,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090097934] [2020-10-27 17:50:07,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:07,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:08,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:08,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 17:50:08,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:50:08,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-27 17:50:08,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:50:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 17:50:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:50:08,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:08,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:08,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:08,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:08,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:08,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:50:08,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:08,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:50:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:09,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:09,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:50:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 17:50:09,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:50:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:50:09,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090097934] [2020-10-27 17:50:09,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:50:09,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:50:09,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217497424] [2020-10-27 17:50:09,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:50:09,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:09,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:50:09,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:50:09,088 INFO L87 Difference]: Start difference. First operand 4674 states and 6272 transitions. Second operand 5 states. [2020-10-27 17:50:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:50:23,071 INFO L93 Difference]: Finished difference Result 11684 states and 16213 transitions. [2020-10-27 17:50:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:50:23,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-27 17:50:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:50:23,112 INFO L225 Difference]: With dead ends: 11684 [2020-10-27 17:50:23,113 INFO L226 Difference]: Without dead ends: 7016 [2020-10-27 17:50:23,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:50:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2020-10-27 17:50:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 7008. [2020-10-27 17:50:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7008 states. [2020-10-27 17:50:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 9707 transitions. [2020-10-27 17:50:23,335 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 9707 transitions. Word has length 156 [2020-10-27 17:50:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:50:23,336 INFO L481 AbstractCegarLoop]: Abstraction has 7008 states and 9707 transitions. [2020-10-27 17:50:23,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:50:23,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 9707 transitions. [2020-10-27 17:50:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 17:50:23,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:23,340 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:50:23,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:50:23,340 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:23,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:23,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1881672070, now seen corresponding path program 1 times [2020-10-27 17:50:23,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:23,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803110744] [2020-10-27 17:50:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:24,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:24,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 17:50:24,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:50:24,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-27 17:50:24,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:50:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-27 17:50:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:50:24,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:24,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:24,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:50:24,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:24,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:50:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:24,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 17:50:24,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 17:50:24,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 17:50:24,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:50:24,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803110744] [2020-10-27 17:50:24,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:50:24,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:50:24,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653057609] [2020-10-27 17:50:24,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:50:24,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:24,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:50:24,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:50:24,856 INFO L87 Difference]: Start difference. First operand 7008 states and 9707 transitions. Second operand 5 states. [2020-10-27 17:50:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:50:41,310 INFO L93 Difference]: Finished difference Result 21026 states and 29783 transitions. [2020-10-27 17:50:41,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:50:41,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-27 17:50:41,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:50:41,376 INFO L225 Difference]: With dead ends: 21026 [2020-10-27 17:50:41,376 INFO L226 Difference]: Without dead ends: 14024 [2020-10-27 17:50:41,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:50:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14024 states. [2020-10-27 17:50:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14024 to 13244. [2020-10-27 17:50:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13244 states. [2020-10-27 17:50:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 18338 transitions. [2020-10-27 17:50:41,819 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 18338 transitions. Word has length 167 [2020-10-27 17:50:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:50:41,819 INFO L481 AbstractCegarLoop]: Abstraction has 13244 states and 18338 transitions. [2020-10-27 17:50:41,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:50:41,820 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 18338 transitions. [2020-10-27 17:50:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-27 17:50:41,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:41,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:50:41,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:50:41,832 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:41,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:41,833 INFO L82 PathProgramCache]: Analyzing trace with hash 343280584, now seen corresponding path program 1 times [2020-10-27 17:50:41,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:41,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437047787] [2020-10-27 17:50:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:41,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:42,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:45,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:45,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 17:50:45,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:50:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3420 [2020-10-27 17:50:45,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:50:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-27 17:50:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:50:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:45,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:45,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:45,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:45,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:45,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:45,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:50:45,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:45,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:50:45,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:50:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:45,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:45,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 17:50:45,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:45,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 17:50:45,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:45,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 17:50:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:45,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:45,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:45,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 17:50:45,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 17:50:45,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 17:50:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 17:50:46,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437047787] [2020-10-27 17:50:46,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:50:46,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:50:46,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116423724] [2020-10-27 17:50:46,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:50:46,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:46,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:50:46,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:50:46,024 INFO L87 Difference]: Start difference. First operand 13244 states and 18338 transitions. Second operand 5 states. [2020-10-27 17:51:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:00,667 INFO L93 Difference]: Finished difference Result 35788 states and 51553 transitions. [2020-10-27 17:51:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:51:00,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-27 17:51:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:00,751 INFO L225 Difference]: With dead ends: 35788 [2020-10-27 17:51:00,751 INFO L226 Difference]: Without dead ends: 22550 [2020-10-27 17:51:00,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:51:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22550 states. [2020-10-27 17:51:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22550 to 21770. [2020-10-27 17:51:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21770 states. [2020-10-27 17:51:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21770 states to 21770 states and 28879 transitions. [2020-10-27 17:51:01,417 INFO L78 Accepts]: Start accepts. Automaton has 21770 states and 28879 transitions. Word has length 284 [2020-10-27 17:51:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:01,418 INFO L481 AbstractCegarLoop]: Abstraction has 21770 states and 28879 transitions. [2020-10-27 17:51:01,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:51:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 21770 states and 28879 transitions. [2020-10-27 17:51:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-27 17:51:01,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:01,436 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:01,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:51:01,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:01,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:01,438 INFO L82 PathProgramCache]: Analyzing trace with hash 704523840, now seen corresponding path program 1 times [2020-10-27 17:51:01,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:01,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927012086] [2020-10-27 17:51:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:02,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:03,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:03,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 17:51:03,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:51:03,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1977 [2020-10-27 17:51:03,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:03,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:03,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-27 17:51:03,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:51:03,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:03,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:03,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:03,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:03,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:51:03,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:03,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:03,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 17:51:03,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 17:51:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 17:51:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:03,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:03,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 17:51:03,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:03,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 17:51:03,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 17:51:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 17:51:04,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927012086] [2020-10-27 17:51:04,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:04,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:04,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096923989] [2020-10-27 17:51:04,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:04,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:04,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:04,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:04,164 INFO L87 Difference]: Start difference. First operand 21770 states and 28879 transitions. Second operand 5 states. [2020-10-27 17:51:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:19,880 INFO L93 Difference]: Finished difference Result 52055 states and 71581 transitions. [2020-10-27 17:51:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:51:19,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-27 17:51:19,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:20,003 INFO L225 Difference]: With dead ends: 52055 [2020-10-27 17:51:20,003 INFO L226 Difference]: Without dead ends: 30291 [2020-10-27 17:51:20,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:51:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30291 states. [2020-10-27 17:51:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30291 to 30279. [2020-10-27 17:51:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30279 states. [2020-10-27 17:51:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30279 states to 30279 states and 38715 transitions. [2020-10-27 17:51:20,876 INFO L78 Accepts]: Start accepts. Automaton has 30279 states and 38715 transitions. Word has length 288 [2020-10-27 17:51:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:20,877 INFO L481 AbstractCegarLoop]: Abstraction has 30279 states and 38715 transitions. [2020-10-27 17:51:20,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:51:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 30279 states and 38715 transitions. [2020-10-27 17:51:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-27 17:51:20,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:20,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:20,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:51:20,902 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:20,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:20,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1485504724, now seen corresponding path program 1 times [2020-10-27 17:51:20,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:20,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950397185] [2020-10-27 17:51:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:21,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:21,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:21,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:24,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:24,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-27 17:51:24,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:51:24,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3983 [2020-10-27 17:51:24,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:51:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-27 17:51:24,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 17:51:24,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:51:25,693 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:51:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:25,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:25,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:25,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:51:25,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:25,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:51:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:25,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:26,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:26,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 17:51:26,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:26,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-27 17:51:26,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-27 17:51:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:51:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:51:26,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950397185] [2020-10-27 17:51:26,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:26,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:51:26,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522226614] [2020-10-27 17:51:26,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:51:26,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:26,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:51:26,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:51:26,755 INFO L87 Difference]: Start difference. First operand 30279 states and 38715 transitions. Second operand 8 states. [2020-10-27 17:51:31,495 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 17:51:31,808 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 17:51:32,695 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-27 17:51:33,570 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 17:51:46,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:46,972 INFO L93 Difference]: Finished difference Result 60694 states and 77779 transitions. [2020-10-27 17:51:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 17:51:46,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 336 [2020-10-27 17:51:46,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:47,069 INFO L225 Difference]: With dead ends: 60694 [2020-10-27 17:51:47,069 INFO L226 Difference]: Without dead ends: 30291 [2020-10-27 17:51:47,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:51:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30291 states. [2020-10-27 17:51:47,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30291 to 30279. [2020-10-27 17:51:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30279 states. [2020-10-27 17:51:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30279 states to 30279 states and 38677 transitions. [2020-10-27 17:51:47,754 INFO L78 Accepts]: Start accepts. Automaton has 30279 states and 38677 transitions. Word has length 336 [2020-10-27 17:51:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:47,754 INFO L481 AbstractCegarLoop]: Abstraction has 30279 states and 38677 transitions. [2020-10-27 17:51:47,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:51:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 30279 states and 38677 transitions. [2020-10-27 17:51:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-27 17:51:47,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:47,782 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:47,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:51:47,782 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:47,783 INFO L82 PathProgramCache]: Analyzing trace with hash 945208868, now seen corresponding path program 1 times [2020-10-27 17:51:47,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:47,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287486922] [2020-10-27 17:51:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:47,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:47,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:49,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:50,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:52,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:52,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-27 17:51:52,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:51:52,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 17:51:52,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 302 [2020-10-27 17:51:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:51:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:53,060 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:51:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:53,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:53,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:53,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:53,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:53,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:51:53,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:53,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:53,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:53,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:53,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:51:53,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:53,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 17:51:53,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:53,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:51:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:53,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:53,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 17:51:53,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-27 17:51:53,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-27 17:51:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 17:51:53,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287486922] [2020-10-27 17:51:53,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:53,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:53,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751875305] [2020-10-27 17:51:53,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:53,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:53,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:53,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:53,656 INFO L87 Difference]: Start difference. First operand 30279 states and 38677 transitions. Second operand 5 states. [2020-10-27 17:51:53,800 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:52:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:14,191 INFO L93 Difference]: Finished difference Result 74506 states and 97445 transitions. [2020-10-27 17:52:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:14,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 358 [2020-10-27 17:52:14,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:14,348 INFO L225 Difference]: With dead ends: 74506 [2020-10-27 17:52:14,348 INFO L226 Difference]: Without dead ends: 44233 [2020-10-27 17:52:14,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44233 states. [2020-10-27 17:52:15,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44233 to 41920. [2020-10-27 17:52:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41920 states. [2020-10-27 17:52:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41920 states to 41920 states and 55400 transitions. [2020-10-27 17:52:15,498 INFO L78 Accepts]: Start accepts. Automaton has 41920 states and 55400 transitions. Word has length 358 [2020-10-27 17:52:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:15,499 INFO L481 AbstractCegarLoop]: Abstraction has 41920 states and 55400 transitions. [2020-10-27 17:52:15,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:15,499 INFO L276 IsEmpty]: Start isEmpty. Operand 41920 states and 55400 transitions. [2020-10-27 17:52:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-27 17:52:15,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:15,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:52:15,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:52:15,553 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:15,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:15,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1128473024, now seen corresponding path program 1 times [2020-10-27 17:52:15,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:15,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728345633] [2020-10-27 17:52:15,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:15,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:15,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:16,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:20,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:20,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 483 [2020-10-27 17:52:20,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:52:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 17:52:20,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:52:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 17:52:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-27 17:52:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:20,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:20,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:20,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:52:20,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:20,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:21,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:21,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:52:21,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:21,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 17:52:21,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:21,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:52:21,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:21,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 17:52:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:21,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:23,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:23,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 17:52:23,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:52:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1845 [2020-10-27 17:52:23,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:52:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:52:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 314 [2020-10-27 17:52:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:52:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:23,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:23,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 17:52:23,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:23,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 17:52:23,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:52:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:52:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 17:52:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:52:23,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728345633] [2020-10-27 17:52:23,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:23,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:52:23,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626655248] [2020-10-27 17:52:23,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:52:23,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:23,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:52:23,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:52:23,528 INFO L87 Difference]: Start difference. First operand 41920 states and 55400 transitions. Second operand 7 states. [2020-10-27 17:52:24,903 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 78