/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/loop-industry-pattern/ofuf_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:40:31,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:40:31,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:40:32,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:40:32,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:40:32,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:40:32,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:40:32,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:40:32,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:40:32,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:40:32,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:40:32,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:40:32,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:40:32,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:40:32,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:40:32,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:40:32,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:40:32,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:40:32,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:40:32,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:40:32,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:40:32,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:40:32,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:40:32,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:40:32,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:40:32,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:40:32,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:40:32,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:40:32,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:40:32,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:40:32,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:40:32,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:40:32,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:40:32,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:40:32,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:40:32,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:40:32,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:40:32,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:40:32,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:40:32,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:40:32,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:40:32,109 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 09:40:32,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:40:32,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:40:32,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:40:32,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:40:32,173 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:40:32,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:40:32,173 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:40:32,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:40:32,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:40:32,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:40:32,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:40:32,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:40:32,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:40:32,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:40:32,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:40:32,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:40:32,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:40:32,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:40:32,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:40:32,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:40:32,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:40:32,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:40:32,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:40:32,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:40:32,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:40:32,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:40:32,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:40:32,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:40:32,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:40:32,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:40:32,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:40:32,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:40:32,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:40:32,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:40:32,656 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:40:32,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2020-10-29 09:40:32,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09a8a42fb/0856e9526da84c31a79e1e55fa10ee7b/FLAG88607b2d1 [2020-10-29 09:40:33,613 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:40:33,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2020-10-29 09:40:33,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09a8a42fb/0856e9526da84c31a79e1e55fa10ee7b/FLAG88607b2d1 [2020-10-29 09:40:33,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09a8a42fb/0856e9526da84c31a79e1e55fa10ee7b [2020-10-29 09:40:33,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:40:33,842 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:40:33,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:40:33,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:40:33,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:40:33,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:40:33" (1/1) ... [2020-10-29 09:40:33,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d5b6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:33, skipping insertion in model container [2020-10-29 09:40:33,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:40:33" (1/1) ... [2020-10-29 09:40:33,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:40:33,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:40:34,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:40:34,272 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:40:34,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:40:34,388 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:40:34,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34 WrapperNode [2020-10-29 09:40:34,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:40:34,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:40:34,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:40:34,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:40:34,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34" (1/1) ... [2020-10-29 09:40:34,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34" (1/1) ... [2020-10-29 09:40:34,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34" (1/1) ... [2020-10-29 09:40:34,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34" (1/1) ... [2020-10-29 09:40:34,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34" (1/1) ... [2020-10-29 09:40:34,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34" (1/1) ... [2020-10-29 09:40:34,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34" (1/1) ... [2020-10-29 09:40:34,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:40:34,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:40:34,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:40:34,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:40:34,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34" (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 09:40:34,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:40:34,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:40:34,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:40:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:40:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-10-29 09:40:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-10-29 09:40:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-10-29 09:40:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-10-29 09:40:34,591 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-10-29 09:40:34,591 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-10-29 09:40:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-10-29 09:40:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-10-29 09:40:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:40:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:40:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:40:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:40:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:40:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:40:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:40:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-10-29 09:40:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-29 09:40:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-10-29 09:40:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-10-29 09:40:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-10-29 09:40:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-10-29 09:40:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-10-29 09:40:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:40:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-10-29 09:40:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-10-29 09:40:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-29 09:40:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:40:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:40:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:40:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:40:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:40:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:40:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:40:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:40:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:40:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:40:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:40:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:40:36,224 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:40:36,224 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-29 09:40:36,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:40:36 BoogieIcfgContainer [2020-10-29 09:40:36,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:40:36,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:40:36,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:40:36,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:40:36,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:40:33" (1/3) ... [2020-10-29 09:40:36,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e83a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:40:36, skipping insertion in model container [2020-10-29 09:40:36,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:34" (2/3) ... [2020-10-29 09:40:36,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e83a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:40:36, skipping insertion in model container [2020-10-29 09:40:36,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:40:36" (3/3) ... [2020-10-29 09:40:36,237 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_4.c [2020-10-29 09:40:36,251 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:40:36,257 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:40:36,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:40:36,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:40:36,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:40:36,309 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:40:36,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:40:36,309 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:40:36,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:40:36,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:40:36,310 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:40:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2020-10-29 09:40:36,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:40:36,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:40:36,345 INFO L422 BasicCegarLoop]: trace histogram [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 09:40:36,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:40:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:40:36,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1381053259, now seen corresponding path program 1 times [2020-10-29 09:40:36,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:40:36,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199811315] [2020-10-29 09:40:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:40:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:36,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:37,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:37,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:41,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:41,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:40:41,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:40:41,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 09:40:41,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:41,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:41,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:40:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 09:40:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:40:41,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:40:42,028 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:40:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:40:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:42,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:42,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:42,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:40:42,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:40:42,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:42,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:40:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:40:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:40:42,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:40:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:42,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:42,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:42,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:42,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:40:42,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:40:42,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 09:40:42,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:42,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:40:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:40:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 09:40:42,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:42,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:40:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:42,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:42,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:42,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:40:42,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:42,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:40:42,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:42,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:42,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:40:42,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:40:42,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:40:42,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 09:40:42,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:40:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:42,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:42,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:40:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:40:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:40:42,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:42,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:40:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:40:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:40:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:40:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:40:42,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199811315] [2020-10-29 09:40:42,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:40:42,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:40:42,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857419954] [2020-10-29 09:40:42,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:40:42,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:40:42,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:40:42,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:40:42,315 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 9 states. [2020-10-29 09:40:42,617 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:40:43,205 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-29 09:40:43,428 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-29 09:40:43,736 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-29 09:40:43,945 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:40:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:40:47,037 INFO L93 Difference]: Finished difference Result 288 states and 439 transitions. [2020-10-29 09:40:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:40:47,044 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-29 09:40:47,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:40:47,059 INFO L225 Difference]: With dead ends: 288 [2020-10-29 09:40:47,059 INFO L226 Difference]: Without dead ends: 156 [2020-10-29 09:40:47,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:40:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-29 09:40:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 148. [2020-10-29 09:40:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-29 09:40:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 202 transitions. [2020-10-29 09:40:47,150 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 202 transitions. Word has length 48 [2020-10-29 09:40:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:40:47,150 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 202 transitions. [2020-10-29 09:40:47,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:40:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 202 transitions. [2020-10-29 09:40:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:40:47,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:40:47,156 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 09:40:47,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:40:47,156 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:40:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:40:47,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1263044341, now seen corresponding path program 1 times [2020-10-29 09:40:47,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:40:47,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955357892] [2020-10-29 09:40:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:40:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:47,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:49,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:52,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 09:40:52,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:40:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 09:40:52,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:52,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:40:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:40:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 09:40:52,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:52,690 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:40:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:40:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:52,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:52,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:40:52,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:52,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 09:40:52,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:52,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:40:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:40:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:40:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:40:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:40:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:52,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:40:52,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:40:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 09:40:52,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:52,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:40:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:40:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:40:52,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:40:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:40:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:52,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:52,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:52,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:40:52,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:52,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:40:52,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:52,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:52,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:40:52,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:40:52,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:40:52,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:40:53,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 09:40:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:53,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:53,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:40:53,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:40:53,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:53,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:40:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:40:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:40:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:40:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:40:53,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955357892] [2020-10-29 09:40:53,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:40:53,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:40:53,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139242851] [2020-10-29 09:40:53,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:40:53,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:40:53,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:40:53,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:40:53,155 INFO L87 Difference]: Start difference. First operand 148 states and 202 transitions. Second operand 20 states. [2020-10-29 09:40:53,337 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:40:53,718 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 09:40:54,457 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 09:40:54,795 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 09:40:55,212 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-29 09:40:55,450 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 09:40:55,773 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 09:40:56,242 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 09:40:56,546 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-29 09:40:57,092 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:40:57,458 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-29 09:40:57,823 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 09:40:58,197 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:40:58,484 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 09:40:58,827 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:40:59,104 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 09:40:59,927 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 09:41:03,508 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 09:41:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:41:03,613 INFO L93 Difference]: Finished difference Result 258 states and 353 transitions. [2020-10-29 09:41:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:41:03,614 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2020-10-29 09:41:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:41:03,625 INFO L225 Difference]: With dead ends: 258 [2020-10-29 09:41:03,626 INFO L226 Difference]: Without dead ends: 211 [2020-10-29 09:41:03,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:41:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-29 09:41:03,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 197. [2020-10-29 09:41:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 09:41:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 272 transitions. [2020-10-29 09:41:03,704 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 272 transitions. Word has length 53 [2020-10-29 09:41:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:41:03,704 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 272 transitions. [2020-10-29 09:41:03,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:41:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 272 transitions. [2020-10-29 09:41:03,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:41:03,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:41:03,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 09:41:03,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:41:03,710 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:41:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:41:03,710 INFO L82 PathProgramCache]: Analyzing trace with hash 14482895, now seen corresponding path program 1 times [2020-10-29 09:41:03,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:41:03,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771184203] [2020-10-29 09:41:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:41:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:03,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:04,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:08,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:08,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 09:41:08,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:41:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:41:08,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:08,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:41:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:41:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 09:41:08,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:09,207 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:41:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:41:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:09,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:09,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:09,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:41:09,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 09:41:09,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:09,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:41:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:41:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:41:09,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:09,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:41:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:09,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:09,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:09,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:41:09,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:41:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 09:41:09,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:09,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:41:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:41:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:41:09,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:09,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:41:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:09,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:09,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:41:09,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:41:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:41:09,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:09,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:41:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:41:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:41:09,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 09:41:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:09,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:09,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:41:09,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:09,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:41:09,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:09,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:41:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:41:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:41:09,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:41:09,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771184203] [2020-10-29 09:41:09,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:41:09,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:41:09,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810078094] [2020-10-29 09:41:09,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:41:09,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:41:09,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:41:09,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:41:09,551 INFO L87 Difference]: Start difference. First operand 197 states and 272 transitions. Second operand 16 states. [2020-10-29 09:41:09,743 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:41:10,166 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 09:41:10,798 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 09:41:11,105 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 09:41:11,567 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:41:11,895 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:41:12,349 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:41:12,661 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:41:13,191 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 09:41:13,527 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 09:41:13,833 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 09:41:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:41:15,680 INFO L93 Difference]: Finished difference Result 262 states and 362 transitions. [2020-10-29 09:41:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:41:15,681 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-29 09:41:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:41:15,685 INFO L225 Difference]: With dead ends: 262 [2020-10-29 09:41:15,685 INFO L226 Difference]: Without dead ends: 213 [2020-10-29 09:41:15,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:41:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-29 09:41:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 201. [2020-10-29 09:41:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 09:41:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2020-10-29 09:41:15,749 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 278 transitions. Word has length 54 [2020-10-29 09:41:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:41:15,752 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 278 transitions. [2020-10-29 09:41:15,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:41:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 278 transitions. [2020-10-29 09:41:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:41:15,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:41:15,758 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:41:15,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:41:15,759 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:41:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:41:15,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1992620812, now seen corresponding path program 1 times [2020-10-29 09:41:15,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:41:15,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828799476] [2020-10-29 09:41:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:41:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:15,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:15,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:16,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:16,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:20,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:20,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 09:41:20,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:41:20,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 09:41:20,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:20,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:20,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:41:20,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 09:41:20,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:41:20,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:21,243 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:41:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:41:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:21,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:21,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:41:21,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:21,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:41:21,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:21,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:41:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:41:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:41:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:41:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:41:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:21,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:21,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:21,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:41:21,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:41:21,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:21,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:41:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:21,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:21,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:41:21,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:41:21,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:21,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:41:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:41:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:41:21,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:21,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:41:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:21,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:21,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:21,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:41:21,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:21,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:41:21,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:21,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:41:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:41:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:41:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:41:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:21,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:21,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:21,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:41:21,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:21,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:41:21,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:21,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:41:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:41:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:41:21,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:41:21,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828799476] [2020-10-29 09:41:21,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:41:21,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:41:21,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102238965] [2020-10-29 09:41:21,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:41:21,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:41:21,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:41:21,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:41:21,517 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. Second operand 11 states. [2020-10-29 09:41:21,703 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:41:22,439 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 09:41:23,043 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 152 [2020-10-29 09:41:23,730 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 152 [2020-10-29 09:41:24,518 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 150 [2020-10-29 09:41:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:41:25,933 INFO L93 Difference]: Finished difference Result 359 states and 502 transitions. [2020-10-29 09:41:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:41:25,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-29 09:41:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:41:25,938 INFO L225 Difference]: With dead ends: 359 [2020-10-29 09:41:25,938 INFO L226 Difference]: Without dead ends: 238 [2020-10-29 09:41:25,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:41:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-29 09:41:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 201. [2020-10-29 09:41:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 09:41:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 275 transitions. [2020-10-29 09:41:26,017 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 275 transitions. Word has length 55 [2020-10-29 09:41:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:41:26,018 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 275 transitions. [2020-10-29 09:41:26,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:41:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 275 transitions. [2020-10-29 09:41:26,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:41:26,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:41:26,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 09:41:26,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:41:26,022 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:41:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:41:26,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1545263804, now seen corresponding path program 1 times [2020-10-29 09:41:26,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:41:26,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780860648] [2020-10-29 09:41:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:41:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:26,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:31,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:31,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 09:41:31,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:41:31,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:41:31,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:31,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:41:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:41:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 09:41:31,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:31,497 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:41:31,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:41:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:31,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:31,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:41:31,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:31,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:41:31,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:31,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:41:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:41:31,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:41:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:41:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:41:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:31,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:31,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:41:31,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:41:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 09:41:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:31,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:41:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:41:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:41:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:41:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 09:41:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:31,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:31,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:31,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:41:31,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:41:31,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:31,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:41:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:41:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:41:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:41:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 09:41:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:31,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:31,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:31,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:41:31,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:41:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:41:31,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:31,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:41:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:41:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:41:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:41:31,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 09:41:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:41:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:41:31,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:31,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:41:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:41:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:41:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:41:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:41:31,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780860648] [2020-10-29 09:41:31,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:41:31,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:41:31,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487908928] [2020-10-29 09:41:31,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:41:31,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:41:31,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:41:31,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:41:31,921 INFO L87 Difference]: Start difference. First operand 201 states and 275 transitions. Second operand 16 states. [2020-10-29 09:41:32,102 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:41:32,470 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-29 09:41:33,210 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:41:33,538 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:41:33,989 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:41:34,324 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:41:34,561 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-29 09:41:34,978 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:41:35,282 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:41:35,629 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 09:41:35,932 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:41:37,007 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:41:37,874 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:41:38,413 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:41:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:41:38,586 INFO L93 Difference]: Finished difference Result 266 states and 361 transitions. [2020-10-29 09:41:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:41:38,589 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-10-29 09:41:38,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:41:38,593 INFO L225 Difference]: With dead ends: 266 [2020-10-29 09:41:38,593 INFO L226 Difference]: Without dead ends: 211 [2020-10-29 09:41:38,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:41:38,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-29 09:41:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2020-10-29 09:41:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 09:41:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 274 transitions. [2020-10-29 09:41:38,649 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 274 transitions. Word has length 60 [2020-10-29 09:41:38,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:41:38,650 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 274 transitions. [2020-10-29 09:41:38,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:41:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 274 transitions. [2020-10-29 09:41:38,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 09:41:38,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:41:38,653 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:38,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:41:38,653 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:41:38,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:41:38,654 INFO L82 PathProgramCache]: Analyzing trace with hash 583028334, now seen corresponding path program 1 times [2020-10-29 09:41:38,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:41:38,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602301266] [2020-10-29 09:41:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:41:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:38,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:39,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:43,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:43,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 09:41:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:41:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 09:41:43,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:43,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:41:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:41:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 09:41:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:41:44,288 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:41:44,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:41:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:44,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:44,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:41:44,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 09:41:44,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:44,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:41:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:41:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:41:44,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:44,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:41:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:44,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:44,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:41:44,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:41:44,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 09:41:44,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:44,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:44,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:41:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:41:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:41:44,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 09:41:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:44,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:44,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:41:44,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:44,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:41:44,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:44,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:44,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:41:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:41:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:41:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:41:44,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:41:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:44,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:44,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:41:44,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:41:44,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:44,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:41:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:41:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:41:44,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:44,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:41:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:44,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:44,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:41:44,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:41:44,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:41:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:41:44,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:41:44,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:41:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:41:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:41:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:41:44,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:41:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:41:44,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602301266] [2020-10-29 09:41:44,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:41:44,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:41:44,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955194969] [2020-10-29 09:41:44,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:41:44,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:41:44,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:41:44,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:41:44,779 INFO L87 Difference]: Start difference. First operand 201 states and 274 transitions. Second operand 22 states. [2020-10-29 09:41:44,990 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:41:45,444 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 09:41:46,402 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:41:46,899 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 09:41:47,520 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:41:47,991 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 09:41:48,287 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 09:41:48,748 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:41:49,106 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 09:41:49,394 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 09:41:49,749 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 09:41:50,174 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 09:41:50,451 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-29 09:41:50,743 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 09:41:51,252 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 09:41:51,524 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 09:41:51,888 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:41:52,197 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-29 09:41:53,351 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 09:41:54,524 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 09:41:59,260 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 09:41:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:41:59,413 INFO L93 Difference]: Finished difference Result 292 states and 400 transitions. [2020-10-29 09:41:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:41:59,414 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2020-10-29 09:41:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:41:59,417 INFO L225 Difference]: With dead ends: 292 [2020-10-29 09:41:59,417 INFO L226 Difference]: Without dead ends: 228 [2020-10-29 09:41:59,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=301, Invalid=1679, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:41:59,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-29 09:41:59,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 218. [2020-10-29 09:41:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-29 09:41:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 300 transitions. [2020-10-29 09:41:59,465 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 300 transitions. Word has length 62 [2020-10-29 09:41:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:41:59,466 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 300 transitions. [2020-10-29 09:41:59,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:41:59,466 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 300 transitions. [2020-10-29 09:41:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:41:59,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:41:59,468 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 09:41:59,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:41:59,469 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:41:59,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:41:59,469 INFO L82 PathProgramCache]: Analyzing trace with hash 828143200, now seen corresponding path program 1 times [2020-10-29 09:41:59,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:41:59,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968197411] [2020-10-29 09:41:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:41:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:41:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:41:59,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:04,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:04,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 09:42:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:42:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 09:42:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:04,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:42:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:42:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 09:42:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:05,288 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:42:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:05,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:05,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 09:42:05,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:05,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:42:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:42:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:05,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:05,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:05,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:42:05,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:42:05,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 09:42:05,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:05,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:42:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:42:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:42:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:05,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:42:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:05,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:05,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:05,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:42:05,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:05,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:05,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 09:42:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:05,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:05,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:42:05,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:05,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:42:05,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:05,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:42:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:42:05,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:05,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 09:42:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:05,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:05,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:05,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:05,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:42:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:05,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968197411] [2020-10-29 09:42:05,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:42:05,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:42:05,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018483865] [2020-10-29 09:42:05,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:42:05,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:05,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:42:05,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:42:05,945 INFO L87 Difference]: Start difference. First operand 218 states and 300 transitions. Second operand 22 states. [2020-10-29 09:42:06,192 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:42:06,671 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 09:42:07,766 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:42:08,223 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 09:42:08,793 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 09:42:09,303 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 09:42:09,685 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 09:42:10,213 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-29 09:42:10,646 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 09:42:11,072 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:42:11,410 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:42:11,859 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 09:42:12,201 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-29 09:42:12,992 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 09:42:14,048 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 09:42:14,439 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 09:42:15,564 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 09:42:18,267 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 09:42:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:18,412 INFO L93 Difference]: Finished difference Result 328 states and 453 transitions. [2020-10-29 09:42:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:42:18,414 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 60 [2020-10-29 09:42:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:18,417 INFO L225 Difference]: With dead ends: 328 [2020-10-29 09:42:18,417 INFO L226 Difference]: Without dead ends: 273 [2020-10-29 09:42:18,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=309, Invalid=1497, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 09:42:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-29 09:42:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 254. [2020-10-29 09:42:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-29 09:42:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 350 transitions. [2020-10-29 09:42:18,472 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 350 transitions. Word has length 60 [2020-10-29 09:42:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:18,472 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 350 transitions. [2020-10-29 09:42:18,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:42:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 350 transitions. [2020-10-29 09:42:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:42:18,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:18,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 09:42:18,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:42:18,475 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:18,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:18,476 INFO L82 PathProgramCache]: Analyzing trace with hash 416787226, now seen corresponding path program 1 times [2020-10-29 09:42:18,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:18,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167897949] [2020-10-29 09:42:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:23,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:23,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 09:42:23,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:42:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 09:42:23,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:23,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:42:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:42:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 09:42:23,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:24,164 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:42:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:24,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 09:42:24,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:24,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:42:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:42:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:24,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:42:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:42:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 09:42:24,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:24,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:42:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:42:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:42:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:24,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:42:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:24,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:42:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:24,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:24,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 09:42:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:24,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:24,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:24,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:42:24,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:42:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:42:24,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:24,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:42:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:42:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:24,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 09:42:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:24,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:24,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:24,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:24,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:42:24,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:24,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:42:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:24,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167897949] [2020-10-29 09:42:24,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:42:24,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:42:24,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404713927] [2020-10-29 09:42:24,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:42:24,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:24,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:42:24,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:42:24,700 INFO L87 Difference]: Start difference. First operand 254 states and 350 transitions. Second operand 18 states. [2020-10-29 09:42:24,907 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:42:25,342 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 09:42:26,335 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:42:26,711 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 09:42:27,305 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 09:42:27,713 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 09:42:28,202 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-29 09:42:28,530 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 09:42:28,903 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:42:29,217 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:42:30,145 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 09:42:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:32,693 INFO L93 Difference]: Finished difference Result 330 states and 453 transitions. [2020-10-29 09:42:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:42:32,696 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-29 09:42:32,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:32,700 INFO L225 Difference]: With dead ends: 330 [2020-10-29 09:42:32,700 INFO L226 Difference]: Without dead ends: 275 [2020-10-29 09:42:32,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:42:32,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-29 09:42:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 265. [2020-10-29 09:42:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-29 09:42:32,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 365 transitions. [2020-10-29 09:42:32,753 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 365 transitions. Word has length 61 [2020-10-29 09:42:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:32,754 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 365 transitions. [2020-10-29 09:42:32,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:42:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 365 transitions. [2020-10-29 09:42:32,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 09:42:32,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:32,756 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:32,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:42:32,756 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:32,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:32,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1408160972, now seen corresponding path program 1 times [2020-10-29 09:42:32,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:32,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113400130] [2020-10-29 09:42:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:32,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 09:42:37,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:42:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 09:42:37,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:42:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:42:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 09:42:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,338 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:42:38,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:38,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:42:38,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:42:38,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:42:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:42:38,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:42:38,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 09:42:38,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:38,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:42:38,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:42:38,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 09:42:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:42:38,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:42:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:42:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:42:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:42:38,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:42:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:42:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 09:42:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:42:38,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:42:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:38,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113400130] [2020-10-29 09:42:38,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:42:38,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:42:38,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560704607] [2020-10-29 09:42:38,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:42:38,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:38,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:42:38,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:42:38,661 INFO L87 Difference]: Start difference. First operand 265 states and 365 transitions. Second operand 18 states. [2020-10-29 09:42:38,868 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:42:39,300 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 09:42:40,306 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-29 09:42:40,722 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 09:42:41,321 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:42:41,683 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:42:42,177 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:42:42,499 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:42:42,774 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 09:42:43,025 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 09:42:43,386 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-29 09:42:43,674 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 09:42:43,961 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 09:42:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:47,376 INFO L93 Difference]: Finished difference Result 341 states and 467 transitions. [2020-10-29 09:42:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:42:47,378 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-10-29 09:42:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:47,382 INFO L225 Difference]: With dead ends: 341 [2020-10-29 09:42:47,382 INFO L226 Difference]: Without dead ends: 275 [2020-10-29 09:42:47,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:42:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-29 09:42:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 263. [2020-10-29 09:42:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-29 09:42:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 358 transitions. [2020-10-29 09:42:47,440 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 358 transitions. Word has length 63 [2020-10-29 09:42:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:47,441 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 358 transitions. [2020-10-29 09:42:47,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:42:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 358 transitions. [2020-10-29 09:42:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:42:47,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:47,443 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:47,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:42:47,443 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:47,444 INFO L82 PathProgramCache]: Analyzing trace with hash -901978996, now seen corresponding path program 2 times [2020-10-29 09:42:47,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:47,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456823614] [2020-10-29 09:42:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:47,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:47,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:52,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:52,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:52,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 09:42:52,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:42:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:42:52,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:52,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:42:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:42:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 09:42:52,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:53,375 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:42:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:53,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:53,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:53,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:42:53,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:53,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:42:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:53,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:42:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:53,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:53,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:53,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:42:53,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:42:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 09:42:53,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:53,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:42:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:42:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:42:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:42:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:53,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:53,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:53,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:42:53,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:53,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:53,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 09:42:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:53,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:53,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:53,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:42:53,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:53,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:42:53,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:53,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:42:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:42:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:53,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 09:42:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:53,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:53,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:53,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:42:53,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:53,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:42:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:54,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456823614] [2020-10-29 09:42:54,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:42:54,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:42:54,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911821560] [2020-10-29 09:42:54,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:42:54,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:54,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:42:54,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:42:54,067 INFO L87 Difference]: Start difference. First operand 263 states and 358 transitions. Second operand 24 states. [2020-10-29 09:42:54,286 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:42:54,916 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 09:42:56,256 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:42:56,808 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 09:42:57,526 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:42:58,061 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 09:42:58,437 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:42:58,974 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:42:59,407 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 09:42:59,749 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:43:00,187 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 09:43:00,720 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 09:43:01,053 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 09:43:01,458 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:43:01,896 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 09:43:02,247 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:43:02,626 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:43:04,485 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 09:43:04,928 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 09:43:09,494 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 09:43:10,833 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 09:43:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:10,992 INFO L93 Difference]: Finished difference Result 354 states and 485 transitions. [2020-10-29 09:43:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 09:43:10,995 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 64 [2020-10-29 09:43:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:10,998 INFO L225 Difference]: With dead ends: 354 [2020-10-29 09:43:10,998 INFO L226 Difference]: Without dead ends: 290 [2020-10-29 09:43:11,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=356, Invalid=1900, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 09:43:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-29 09:43:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 280. [2020-10-29 09:43:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-29 09:43:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 385 transitions. [2020-10-29 09:43:11,056 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 385 transitions. Word has length 64 [2020-10-29 09:43:11,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:11,056 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 385 transitions. [2020-10-29 09:43:11,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:43:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 385 transitions. [2020-10-29 09:43:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 09:43:11,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:11,059 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:11,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:43:11,059 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:11,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:11,059 INFO L82 PathProgramCache]: Analyzing trace with hash 60972216, now seen corresponding path program 3 times [2020-10-29 09:43:11,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:11,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429662057] [2020-10-29 09:43:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:11,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:11,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:12,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:16,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:16,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 09:43:16,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:43:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 09:43:16,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:16,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:43:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 09:43:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:43:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:16,494 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:43:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:16,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:16,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:16,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:16,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:16,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:43:16,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:16,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:43:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:16,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:16,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:16,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:43:16,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:43:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:43:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:16,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:43:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:43:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:43:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:43:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:16,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:16,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:16,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:43:16,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:43:16,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:16,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:43:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:16,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 09:43:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:16,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:16,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:16,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:43:16,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:16,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:43:16,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:16,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:16,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:16,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:43:16,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:16,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 09:43:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:16,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:16,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:43:16,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:43:16,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:16,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:43:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:43:16,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429662057] [2020-10-29 09:43:16,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:16,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:43:16,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524047172] [2020-10-29 09:43:16,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:43:16,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:16,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:43:16,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:43:16,803 INFO L87 Difference]: Start difference. First operand 280 states and 385 transitions. Second operand 14 states. [2020-10-29 09:43:17,019 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:43:18,126 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-29 09:43:18,472 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 09:43:18,949 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-29 09:43:19,276 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 09:43:19,741 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-29 09:43:20,008 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 09:43:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:23,917 INFO L93 Difference]: Finished difference Result 457 states and 645 transitions. [2020-10-29 09:43:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:43:23,919 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-29 09:43:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:23,921 INFO L225 Difference]: With dead ends: 457 [2020-10-29 09:43:23,922 INFO L226 Difference]: Without dead ends: 197 [2020-10-29 09:43:23,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:43:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-29 09:43:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 150. [2020-10-29 09:43:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-29 09:43:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 201 transitions. [2020-10-29 09:43:23,950 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 201 transitions. Word has length 68 [2020-10-29 09:43:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:23,951 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 201 transitions. [2020-10-29 09:43:23,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:43:23,951 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 201 transitions. [2020-10-29 09:43:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 09:43:23,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:23,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 09:43:23,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:43:23,952 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:23,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:23,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1935410178, now seen corresponding path program 4 times [2020-10-29 09:43:23,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:23,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606817414] [2020-10-29 09:43:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:24,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:24,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:28,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:28,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 09:43:28,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:43:28,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:43:28,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:28,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:43:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:43:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 09:43:28,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:29,841 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:43:29,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:29,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:43:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:43:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:29,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:30,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:30,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:43:30,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:43:30,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 09:43:30,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:30,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:43:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:43:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:43:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:30,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 09:43:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:30,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:30,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:43:30,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:43:30,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:30,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:43:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:43:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:30,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:43:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:30,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:30,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:30,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:43:30,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:43:30,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:30,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:43:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:43:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:30,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:43:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:30,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:30,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:30,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:43:30,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:43:30,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:30,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:43:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:43:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:43:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:30,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606817414] [2020-10-29 09:43:30,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:30,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:43:30,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565994937] [2020-10-29 09:43:30,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:43:30,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:30,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:43:30,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:43:30,762 INFO L87 Difference]: Start difference. First operand 150 states and 201 transitions. Second operand 23 states. [2020-10-29 09:43:30,976 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:43:31,540 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 09:43:33,138 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:43:33,756 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 09:43:34,495 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:43:35,081 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 09:43:35,523 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:43:36,091 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:43:36,575 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 09:43:37,122 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 09:43:37,426 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 09:43:37,781 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:43:38,423 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 09:43:38,752 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:43:39,121 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 09:43:39,426 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:43:40,808 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 09:43:44,421 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 09:43:44,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:44,563 INFO L93 Difference]: Finished difference Result 254 states and 340 transitions. [2020-10-29 09:43:44,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:43:44,566 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 62 [2020-10-29 09:43:44,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:44,567 INFO L225 Difference]: With dead ends: 254 [2020-10-29 09:43:44,567 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 09:43:44,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=357, Invalid=1623, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:43:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 09:43:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2020-10-29 09:43:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 09:43:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 265 transitions. [2020-10-29 09:43:44,606 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 265 transitions. Word has length 62 [2020-10-29 09:43:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:44,606 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 265 transitions. [2020-10-29 09:43:44,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:43:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 265 transitions. [2020-10-29 09:43:44,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 09:43:44,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:44,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:44,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:43:44,608 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:44,609 INFO L82 PathProgramCache]: Analyzing trace with hash 645978428, now seen corresponding path program 2 times [2020-10-29 09:43:44,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:44,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603219654] [2020-10-29 09:43:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:44,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:49,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:49,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 09:43:49,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:43:49,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:43:49,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:49,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:43:49,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:43:49,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 09:43:49,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:49,863 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2020-10-29 09:43:50,404 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 09:43:50,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:50,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:50,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:50,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:50,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:50,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 09:43:50,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:50,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:43:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:43:50,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:50,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:43:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:50,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:50,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:43:50,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:43:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 09:43:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:50,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:43:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:43:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:43:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:51,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 09:43:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:51,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:51,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:43:51,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:43:51,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:51,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:43:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:43:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:51,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:43:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:51,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:43:51,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:43:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:43:51,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:51,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:43:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:43:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:43:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 09:43:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:51,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:51,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:43:51,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:51,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:43:51,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:51,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:43:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:51,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:51,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603219654] [2020-10-29 09:43:51,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:51,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:43:51,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048949175] [2020-10-29 09:43:51,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:43:51,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:51,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:43:51,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:43:51,341 INFO L87 Difference]: Start difference. First operand 197 states and 265 transitions. Second operand 19 states. [2020-10-29 09:43:51,567 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:43:52,145 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 09:43:53,803 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:43:54,376 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 09:43:55,054 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 09:43:55,472 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 09:43:56,003 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 09:43:56,311 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 09:43:56,677 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:43:57,121 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 09:43:57,566 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 09:44:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:00,319 INFO L93 Difference]: Finished difference Result 262 states and 355 transitions. [2020-10-29 09:44:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:44:00,322 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-29 09:44:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:00,323 INFO L225 Difference]: With dead ends: 262 [2020-10-29 09:44:00,323 INFO L226 Difference]: Without dead ends: 213 [2020-10-29 09:44:00,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:44:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-29 09:44:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 201. [2020-10-29 09:44:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 09:44:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 271 transitions. [2020-10-29 09:44:00,363 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 271 transitions. Word has length 63 [2020-10-29 09:44:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:00,363 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 271 transitions. [2020-10-29 09:44:00,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:44:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 271 transitions. [2020-10-29 09:44:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:44:00,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:00,365 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 09:44:00,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:44:00,365 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:00,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:00,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1591670392, now seen corresponding path program 1 times [2020-10-29 09:44:00,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:00,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070307498] [2020-10-29 09:44:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:05,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 09:44:05,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:44:05,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 09:44:05,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:05,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:44:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:44:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:44:05,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:05,629 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2020-10-29 09:44:05,748 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11