/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:32:05,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:32:05,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:32:06,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:32:06,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:32:06,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:32:06,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:32:06,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:32:06,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:32:06,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:32:06,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:32:06,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:32:06,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:32:06,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:32:06,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:32:06,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:32:06,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:32:06,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:32:06,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:32:06,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:32:06,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:32:06,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:32:06,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:32:06,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:32:06,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:32:06,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:32:06,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:32:06,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:32:06,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:32:06,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:32:06,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:32:06,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:32:06,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:32:06,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:32:06,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:32:06,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:32:06,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:32:06,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:32:06,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:32:06,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:32:06,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:32:06,111 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 [2020-10-29 08:32:06,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:32:06,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:32:06,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:32:06,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:32:06,165 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:32:06,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:32:06,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:32:06,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:32:06,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:32:06,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:32:06,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:32:06,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:32:06,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:32:06,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:32:06,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:32:06,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:32:06,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:32:06,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:32:06,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:32:06,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:32:06,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:32:06,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:32:06,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:32:06,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:32:06,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:32:06,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:32:06,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:32:06,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:32:06,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:32:06,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:32:06,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:32:06,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:32:06,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:32:06,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:32:06,635 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:32:06,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23.c [2020-10-29 08:32:06,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da965f98c/04e043fb8c064ad49cc22ab30d2511f3/FLAGf17e56937 [2020-10-29 08:32:07,749 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:32:07,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label23.c [2020-10-29 08:32:07,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da965f98c/04e043fb8c064ad49cc22ab30d2511f3/FLAGf17e56937 [2020-10-29 08:32:07,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da965f98c/04e043fb8c064ad49cc22ab30d2511f3 [2020-10-29 08:32:07,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:32:07,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:32:07,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:32:07,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:32:07,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:32:07,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:32:07" (1/1) ... [2020-10-29 08:32:07,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d821c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:07, skipping insertion in model container [2020-10-29 08:32:07,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:32:07" (1/1) ... [2020-10-29 08:32:07,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:32:07,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:32:09,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:32:09,151 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:32:09,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:32:09,745 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:32:09,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09 WrapperNode [2020-10-29 08:32:09,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:32:09,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:32:09,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:32:09,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:32:09,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09" (1/1) ... [2020-10-29 08:32:09,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09" (1/1) ... [2020-10-29 08:32:09,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09" (1/1) ... [2020-10-29 08:32:09,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09" (1/1) ... [2020-10-29 08:32:09,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09" (1/1) ... [2020-10-29 08:32:10,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09" (1/1) ... [2020-10-29 08:32:10,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09" (1/1) ... [2020-10-29 08:32:10,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:32:10,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:32:10,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:32:10,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:32:10,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09" (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 [2020-10-29 08:32:10,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:32:10,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:32:10,146 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:32:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:32:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:32:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:32:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:32:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:32:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:32:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:32:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:32:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:32:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:32:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:32:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:32:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:32:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:32:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:32:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:32:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:32:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:32:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:32:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:32:14,265 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:32:14,265 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:32:14,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:32:14 BoogieIcfgContainer [2020-10-29 08:32:14,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:32:14,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:32:14,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:32:14,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:32:14,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:32:07" (1/3) ... [2020-10-29 08:32:14,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40816342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:32:14, skipping insertion in model container [2020-10-29 08:32:14,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:32:09" (2/3) ... [2020-10-29 08:32:14,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40816342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:32:14, skipping insertion in model container [2020-10-29 08:32:14,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:32:14" (3/3) ... [2020-10-29 08:32:14,279 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label23.c [2020-10-29 08:32:14,293 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:32:14,300 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:32:14,315 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:32:14,353 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:32:14,353 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:32:14,354 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:32:14,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:32:14,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:32:14,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:32:14,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:32:14,354 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:32:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:32:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 08:32:14,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:14,405 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] [2020-10-29 08:32:14,405 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:14,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:14,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1138468224, now seen corresponding path program 1 times [2020-10-29 08:32:14,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:14,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570936274] [2020-10-29 08:32:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:14,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:15,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:32:15,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:15,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-29 08:32:15,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:15,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:32:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:32:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 08:32:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:32:15,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:15,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:15,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:15,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:32:15,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:15,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:32:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:32:15,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570936274] [2020-10-29 08:32:15,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:32:15,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:32:15,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623257188] [2020-10-29 08:32:15,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:32:15,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:15,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:32:15,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:32:15,560 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-29 08:32:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:27,280 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-29 08:32:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:32:27,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-29 08:32:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:27,326 INFO L225 Difference]: With dead ends: 2275 [2020-10-29 08:32:27,326 INFO L226 Difference]: Without dead ends: 1433 [2020-10-29 08:32:27,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:32:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-29 08:32:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-29 08:32:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-29 08:32:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-29 08:32:27,532 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 62 [2020-10-29 08:32:27,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:27,533 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-29 08:32:27,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:32:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-29 08:32:27,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 08:32:27,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:27,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:27,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:32:27,550 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:27,552 INFO L82 PathProgramCache]: Analyzing trace with hash -620053826, now seen corresponding path program 1 times [2020-10-29 08:32:27,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:27,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262747418] [2020-10-29 08:32:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:28,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:28,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:32:28,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-29 08:32:28,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:28,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 08:32:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 08:32:28,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:28,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:28,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:28,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:32:28,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:28,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:28,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:28,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:29,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:29,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:32:29,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:29,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:32:29,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:29,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 08:32:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:32:29,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262747418] [2020-10-29 08:32:29,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:29,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:32:29,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841647405] [2020-10-29 08:32:29,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:32:29,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:29,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:32:29,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:32:29,087 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 5 states. [2020-10-29 08:32:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:41,177 INFO L93 Difference]: Finished difference Result 4277 states and 7004 transitions. [2020-10-29 08:32:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:32:41,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-29 08:32:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:41,203 INFO L225 Difference]: With dead ends: 4277 [2020-10-29 08:32:41,204 INFO L226 Difference]: Without dead ends: 2854 [2020-10-29 08:32:41,208 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 [2020-10-29 08:32:41,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2020-10-29 08:32:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2848. [2020-10-29 08:32:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-29 08:32:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4165 transitions. [2020-10-29 08:32:41,299 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4165 transitions. Word has length 131 [2020-10-29 08:32:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:41,300 INFO L481 AbstractCegarLoop]: Abstraction has 2848 states and 4165 transitions. [2020-10-29 08:32:41,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:32:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4165 transitions. [2020-10-29 08:32:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 08:32:41,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:41,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:41,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:32:41,304 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:41,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:41,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1058547272, now seen corresponding path program 1 times [2020-10-29 08:32:41,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:41,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507893385] [2020-10-29 08:32:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:42,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:42,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:32:42,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:32:42,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1602 [2020-10-29 08:32:42,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:42,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 08:32:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 08:32:42,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:43,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:43,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:43,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:43,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:43,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:32:43,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:43,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:43,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:43,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:32:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:32:43,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:43,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 08:32:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:32:43,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507893385] [2020-10-29 08:32:43,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:43,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:32:43,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427413733] [2020-10-29 08:32:43,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:32:43,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:43,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:32:43,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:32:43,239 INFO L87 Difference]: Start difference. First operand 2848 states and 4165 transitions. Second operand 5 states. [2020-10-29 08:32:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:56,299 INFO L93 Difference]: Finished difference Result 7116 states and 10717 transitions. [2020-10-29 08:32:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:32:56,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-29 08:32:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:56,338 INFO L225 Difference]: With dead ends: 7116 [2020-10-29 08:32:56,338 INFO L226 Difference]: Without dead ends: 4274 [2020-10-29 08:32:56,350 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 [2020-10-29 08:32:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2020-10-29 08:32:56,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4270. [2020-10-29 08:32:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4270 states. [2020-10-29 08:32:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 5814 transitions. [2020-10-29 08:32:56,483 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 5814 transitions. Word has length 132 [2020-10-29 08:32:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:56,484 INFO L481 AbstractCegarLoop]: Abstraction has 4270 states and 5814 transitions. [2020-10-29 08:32:56,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:32:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 5814 transitions. [2020-10-29 08:32:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 08:32:56,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:56,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:56,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:32:56,487 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:56,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:56,488 INFO L82 PathProgramCache]: Analyzing trace with hash 219003396, now seen corresponding path program 1 times [2020-10-29 08:32:56,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:56,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105190927] [2020-10-29 08:32:56,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:57,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:57,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 08:32:57,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-29 08:32:57,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:57,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:32:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 08:32:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:57,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:57,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:57,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:57,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:57,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:32:57,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:57,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:57,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:57,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:57,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:32:57,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:57,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:32:57,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:57,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:32:57,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:32:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:32:57,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105190927] [2020-10-29 08:32:57,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:57,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:32:57,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101074717] [2020-10-29 08:32:57,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:32:57,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:57,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:32:57,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:32:57,596 INFO L87 Difference]: Start difference. First operand 4270 states and 5814 transitions. Second operand 5 states. [2020-10-29 08:33:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:11,720 INFO L93 Difference]: Finished difference Result 12795 states and 17633 transitions. [2020-10-29 08:33:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:33:11,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 08:33:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:11,768 INFO L225 Difference]: With dead ends: 12795 [2020-10-29 08:33:11,769 INFO L226 Difference]: Without dead ends: 8531 [2020-10-29 08:33:11,780 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 [2020-10-29 08:33:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8531 states. [2020-10-29 08:33:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8531 to 7825. [2020-10-29 08:33:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7825 states. [2020-10-29 08:33:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7825 states to 7825 states and 10674 transitions. [2020-10-29 08:33:12,007 INFO L78 Accepts]: Start accepts. Automaton has 7825 states and 10674 transitions. Word has length 134 [2020-10-29 08:33:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:12,007 INFO L481 AbstractCegarLoop]: Abstraction has 7825 states and 10674 transitions. [2020-10-29 08:33:12,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:33:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7825 states and 10674 transitions. [2020-10-29 08:33:12,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 08:33:12,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:12,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:33:12,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:33:12,016 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:12,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:12,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2024024092, now seen corresponding path program 1 times [2020-10-29 08:33:12,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:12,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929273720] [2020-10-29 08:33:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:13,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:13,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:13,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 08:33:13,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:33:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1286 [2020-10-29 08:33:13,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:13,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:33:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:33:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 08:33:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:13,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:13,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:13,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:13,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:13,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:33:13,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:13,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:33:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:13,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:13,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:13,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:33:13,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:33:13,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:13,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 08:33:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:33:13,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929273720] [2020-10-29 08:33:13,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:33:13,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:33:13,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847746933] [2020-10-29 08:33:13,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:33:13,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:13,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:33:13,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:33:13,825 INFO L87 Difference]: Start difference. First operand 7825 states and 10674 transitions. Second operand 7 states. [2020-10-29 08:33:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:27,726 INFO L93 Difference]: Finished difference Result 17141 states and 23708 transitions. [2020-10-29 08:33:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:33:27,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-29 08:33:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:27,785 INFO L225 Difference]: With dead ends: 17141 [2020-10-29 08:33:27,785 INFO L226 Difference]: Without dead ends: 8612 [2020-10-29 08:33:27,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:33:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8612 states. [2020-10-29 08:33:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8612 to 7897. [2020-10-29 08:33:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7897 states. [2020-10-29 08:33:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 10176 transitions. [2020-10-29 08:33:28,017 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 10176 transitions. Word has length 150 [2020-10-29 08:33:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:28,017 INFO L481 AbstractCegarLoop]: Abstraction has 7897 states and 10176 transitions. [2020-10-29 08:33:28,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:33:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 10176 transitions. [2020-10-29 08:33:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 08:33:28,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:28,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:33:28,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:33:28,023 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:28,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:28,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1913421720, now seen corresponding path program 1 times [2020-10-29 08:33:28,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:28,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453997773] [2020-10-29 08:33:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:28,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:28,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:31,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:31,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-29 08:33:31,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:33:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3760 [2020-10-29 08:33:31,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:31,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:33:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:33:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:31,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:31,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:31,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:31,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:31,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:33:31,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:31,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:31,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:31,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:32,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:32,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:33:32,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:32,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:33:32,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:32,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:32,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:32,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:32,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:33:32,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:32,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:33:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:32,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:32,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:33:32,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 08:33:32,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:32,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 08:33:32,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:33:32,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453997773] [2020-10-29 08:33:32,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:32,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:33:32,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357244627] [2020-10-29 08:33:32,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:33:32,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:32,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:33:32,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:33:32,310 INFO L87 Difference]: Start difference. First operand 7897 states and 10176 transitions. Second operand 7 states. [2020-10-29 08:33:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:46,762 INFO L93 Difference]: Finished difference Result 19401 states and 25438 transitions. [2020-10-29 08:33:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:33:46,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-29 08:33:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:46,810 INFO L225 Difference]: With dead ends: 19401 [2020-10-29 08:33:46,811 INFO L226 Difference]: Without dead ends: 11510 [2020-10-29 08:33:46,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:33:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-10-29 08:33:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 11494. [2020-10-29 08:33:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11494 states. [2020-10-29 08:33:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11494 states to 11494 states and 14670 transitions. [2020-10-29 08:33:47,125 INFO L78 Accepts]: Start accepts. Automaton has 11494 states and 14670 transitions. Word has length 222 [2020-10-29 08:33:47,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:47,126 INFO L481 AbstractCegarLoop]: Abstraction has 11494 states and 14670 transitions. [2020-10-29 08:33:47,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:33:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 11494 states and 14670 transitions. [2020-10-29 08:33:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 08:33:47,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:47,132 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, 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] [2020-10-29 08:33:47,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:33:47,132 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:47,135 INFO L82 PathProgramCache]: Analyzing trace with hash 816711836, now seen corresponding path program 1 times [2020-10-29 08:33:47,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:47,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219553184] [2020-10-29 08:33:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:47,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:49,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:51,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-29 08:33:51,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:33:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4212 [2020-10-29 08:33:51,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:51,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:51,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:33:51,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:33:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:51,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:51,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:51,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:33:51,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:51,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:51,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:51,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:51,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:51,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:51,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:33:51,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:33:51,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:51,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:33:51,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:51,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:33:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:51,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:51,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:33:51,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 08:33:51,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:51,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:33:51,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:33:51,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219553184] [2020-10-29 08:33:51,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:51,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:33:51,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816540134] [2020-10-29 08:33:51,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:33:51,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:51,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:33:51,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:33:51,901 INFO L87 Difference]: Start difference. First operand 11494 states and 14670 transitions. Second operand 7 states. [2020-10-29 08:34:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:06,233 INFO L93 Difference]: Finished difference Result 27468 states and 35854 transitions. [2020-10-29 08:34:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:34:06,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-29 08:34:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:06,285 INFO L225 Difference]: With dead ends: 27468 [2020-10-29 08:34:06,285 INFO L226 Difference]: Without dead ends: 15260 [2020-10-29 08:34:06,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:34:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15260 states. [2020-10-29 08:34:06,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15260 to 15230. [2020-10-29 08:34:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15230 states. [2020-10-29 08:34:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15230 states to 15230 states and 19332 transitions. [2020-10-29 08:34:06,682 INFO L78 Accepts]: Start accepts. Automaton has 15230 states and 19332 transitions. Word has length 228 [2020-10-29 08:34:06,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:06,683 INFO L481 AbstractCegarLoop]: Abstraction has 15230 states and 19332 transitions. [2020-10-29 08:34:06,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:34:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 15230 states and 19332 transitions. [2020-10-29 08:34:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 08:34:06,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:06,695 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:34:06,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:34:06,696 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:06,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1870938264, now seen corresponding path program 1 times [2020-10-29 08:34:06,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:06,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807849417] [2020-10-29 08:34:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:11,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:11,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-29 08:34:11,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:34:11,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 08:34:11,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:11,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-29 08:34:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:34:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:11,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:11,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:11,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:11,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:11,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:34:11,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:11,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:12,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:12,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:12,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:34:12,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:12,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:34:12,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:12,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:34:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:34:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:12,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:12,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:12,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 08:34:12,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:12,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 08:34:12,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:12,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 08:34:12,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:34:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-29 08:34:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:12,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:12,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:34:12,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 08:34:12,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:12,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 08:34:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:34:12,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807849417] [2020-10-29 08:34:12,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:12,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:34:12,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752932869] [2020-10-29 08:34:12,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:34:12,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:12,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:34:12,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:34:12,687 INFO L87 Difference]: Start difference. First operand 15230 states and 19332 transitions. Second operand 7 states. [2020-10-29 08:34:30,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:30,044 INFO L93 Difference]: Finished difference Result 38823 states and 51730 transitions. [2020-10-29 08:34:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:34:30,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-29 08:34:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:30,150 INFO L225 Difference]: With dead ends: 38823 [2020-10-29 08:34:30,151 INFO L226 Difference]: Without dead ends: 23599 [2020-10-29 08:34:30,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:34:30,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23599 states. [2020-10-29 08:34:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23599 to 22015. [2020-10-29 08:34:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22015 states. [2020-10-29 08:34:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22015 states to 22015 states and 27940 transitions. [2020-10-29 08:34:30,738 INFO L78 Accepts]: Start accepts. Automaton has 22015 states and 27940 transitions. Word has length 328 [2020-10-29 08:34:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:30,739 INFO L481 AbstractCegarLoop]: Abstraction has 22015 states and 27940 transitions. [2020-10-29 08:34:30,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:34:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22015 states and 27940 transitions. [2020-10-29 08:34:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-29 08:34:30,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:30,755 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:34:30,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:34:30,756 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:30,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1402746846, now seen corresponding path program 1 times [2020-10-29 08:34:30,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:30,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514284409] [2020-10-29 08:34:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:30,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:30,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:35,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:35,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-29 08:34:35,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:34:35,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 08:34:35,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:35,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:35,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 08:34:35,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:34:35,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-29 08:34:35,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:35,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:35,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:35,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:35,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:35,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:34:35,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:35,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:35,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:35,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:36,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:36,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:34:36,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:34:36,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:36,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:34:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:36,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:34:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:36,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:36,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 08:34:36,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:36,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 08:34:36,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:36,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:34:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:34:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-29 08:34:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:36,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:36,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:36,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:34:36,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 08:34:36,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:36,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 08:34:36,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 304 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 08:34:36,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514284409] [2020-10-29 08:34:36,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:36,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:34:36,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268401670] [2020-10-29 08:34:36,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:34:36,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:36,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:34:36,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:34:36,775 INFO L87 Difference]: Start difference. First operand 22015 states and 27940 transitions. Second operand 9 states. [2020-10-29 08:35:03,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:35:03,628 INFO L93 Difference]: Finished difference Result 71363 states and 101559 transitions. [2020-10-29 08:35:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 08:35:03,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 365 [2020-10-29 08:35:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:35:03,849 INFO L225 Difference]: With dead ends: 71363 [2020-10-29 08:35:03,850 INFO L226 Difference]: Without dead ends: 48642 [2020-10-29 08:35:03,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-29 08:35:03,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48642 states. [2020-10-29 08:35:05,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48642 to 45825. [2020-10-29 08:35:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45825 states. [2020-10-29 08:35:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45825 states to 45825 states and 58624 transitions. [2020-10-29 08:35:05,685 INFO L78 Accepts]: Start accepts. Automaton has 45825 states and 58624 transitions. Word has length 365 [2020-10-29 08:35:05,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:35:05,686 INFO L481 AbstractCegarLoop]: Abstraction has 45825 states and 58624 transitions. [2020-10-29 08:35:05,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:35:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 45825 states and 58624 transitions. [2020-10-29 08:35:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-29 08:35:05,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:35:05,704 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:35:05,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:35:05,705 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:35:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:35:05,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2089935094, now seen corresponding path program 1 times [2020-10-29 08:35:05,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:35:05,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370208969] [2020-10-29 08:35:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:35:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:05,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:06,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:10,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:10,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-29 08:35:10,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:35:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 08:35:10,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:10,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:35:10,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 08:35:10,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:10,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:35:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:10,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:10,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:35:10,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:10,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:35:10,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:10,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:10,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:35:10,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:10,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:35:10,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:35:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:10,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:10,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:35:10,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:35:10,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:10,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:35:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:35:10,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:35:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:11,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:11,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 08:35:11,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 08:35:11,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:11,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:35:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:35:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-29 08:35:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:11,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:11,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:11,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:35:11,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 08:35:11,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:11,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:35:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-29 08:35:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:35:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 235 proven. 105 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 08:35:11,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370208969] [2020-10-29 08:35:11,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:35:11,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:35:11,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857132893] [2020-10-29 08:35:11,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:35:11,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:35:11,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:35:11,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:35:11,555 INFO L87 Difference]: Start difference. First operand 45825 states and 58624 transitions. Second operand 7 states. [2020-10-29 08:35:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:35:29,022 INFO L93 Difference]: Finished difference Result 94892 states and 126216 transitions. [2020-10-29 08:35:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:35:29,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-29 08:35:29,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:35:29,218 INFO L225 Difference]: With dead ends: 94892 [2020-10-29 08:35:29,219 INFO L226 Difference]: Without dead ends: 49073 [2020-10-29 08:35:29,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:35:29,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49073 states. [2020-10-29 08:35:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49073 to 48725. [2020-10-29 08:35:30,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48725 states. [2020-10-29 08:35:30,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48725 states to 48725 states and 62418 transitions. [2020-10-29 08:35:30,602 INFO L78 Accepts]: Start accepts. Automaton has 48725 states and 62418 transitions. Word has length 375 [2020-10-29 08:35:30,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:35:30,603 INFO L481 AbstractCegarLoop]: Abstraction has 48725 states and 62418 transitions. [2020-10-29 08:35:30,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:35:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 48725 states and 62418 transitions. [2020-10-29 08:35:30,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-29 08:35:30,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:35:30,620 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:35:30,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:35:30,621 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:35:30,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:35:30,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1240165156, now seen corresponding path program 1 times [2020-10-29 08:35:30,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:35:30,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352197845] [2020-10-29 08:35:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:35:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:30,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:31,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:35,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:35,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 08:35:35,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:35:35,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 08:35:35,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:35,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 08:35:35,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 08:35:35,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:35,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:35:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:35,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:35,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:35:35,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:35:35,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:35,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:35:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:35:35,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:35,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:35:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:35,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:35,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:35,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 08:35:35,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:35:35,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:35,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:35:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 08:35:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 08:35:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:36,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:36,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 08:35:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 08:35:36,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:36,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:35:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:35:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-29 08:35:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:36,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:36,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:35:36,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:35:36,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:36,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:35:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-29 08:35:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:35:36,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 252 proven. 105 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 08:35:36,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352197845] [2020-10-29 08:35:36,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:35:36,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:35:36,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247304579] [2020-10-29 08:35:36,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:35:36,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:35:36,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:35:36,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:35:36,366 INFO L87 Difference]: Start difference. First operand 48725 states and 62418 transitions. Second operand 7 states.