/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:18:33,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:18:33,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:18:33,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:18:33,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:18:33,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:18:33,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:18:33,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:18:33,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:18:33,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:18:33,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:18:33,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:18:33,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:18:33,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:18:33,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:18:33,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:18:33,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:18:33,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:18:33,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:18:33,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:18:33,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:18:33,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:18:33,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:18:33,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:18:33,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:18:33,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:18:33,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:18:33,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:18:33,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:18:33,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:18:33,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:18:33,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:18:33,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:18:33,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:18:33,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:18:33,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:18:33,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:18:33,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:18:33,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:18:33,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:18:33,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:18:33,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:18:33,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:18:33,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:18:33,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:18:33,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:18:33,229 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:18:33,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:18:33,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:18:33,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:18:33,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:18:33,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:18:33,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:18:33,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:18:33,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:18:33,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:18:33,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:18:33,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:18:33,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:18:33,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:18:33,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:18:33,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:18:33,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:18:33,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:18:33,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:18:33,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:18:33,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:18:33,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:18:33,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:18:33,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:18:33,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:18:33,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:18:33,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:18:33,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:18:33,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:18:33,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:18:33,695 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:18:33,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-28 12:18:33,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ba2ed89/6887b70fd296415ab7b0437d687f0265/FLAG204a13d04 [2020-10-28 12:18:34,807 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:18:34,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-28 12:18:34,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ba2ed89/6887b70fd296415ab7b0437d687f0265/FLAG204a13d04 [2020-10-28 12:18:35,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ba2ed89/6887b70fd296415ab7b0437d687f0265 [2020-10-28 12:18:35,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:18:35,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:18:35,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:18:35,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:18:35,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:18:35,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:18:35" (1/1) ... [2020-10-28 12:18:35,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344291fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:35, skipping insertion in model container [2020-10-28 12:18:35,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:18:35" (1/1) ... [2020-10-28 12:18:35,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:18:35,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:18:36,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:18:36,884 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:18:37,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:18:37,588 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:18:37,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37 WrapperNode [2020-10-28 12:18:37,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:18:37,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:18:37,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:18:37,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:18:37,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37" (1/1) ... [2020-10-28 12:18:37,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37" (1/1) ... [2020-10-28 12:18:37,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37" (1/1) ... [2020-10-28 12:18:37,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37" (1/1) ... [2020-10-28 12:18:37,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37" (1/1) ... [2020-10-28 12:18:37,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37" (1/1) ... [2020-10-28 12:18:37,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37" (1/1) ... [2020-10-28 12:18:37,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:18:38,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:18:38,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:18:38,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:18:38,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:18:38,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:18:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:18:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:18:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:18:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:18:38,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:18:38,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:18:38,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:18:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:18:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:18:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:18:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:18:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:18:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:18:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:18:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:18:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:18:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:18:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:18:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:18:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:18:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:18:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:18:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:18:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:18:44,035 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:18:44,035 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:18:44,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:18:44 BoogieIcfgContainer [2020-10-28 12:18:44,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:18:44,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:18:44,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:18:44,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:18:44,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:18:35" (1/3) ... [2020-10-28 12:18:44,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8de25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:18:44, skipping insertion in model container [2020-10-28 12:18:44,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:37" (2/3) ... [2020-10-28 12:18:44,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8de25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:18:44, skipping insertion in model container [2020-10-28 12:18:44,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:18:44" (3/3) ... [2020-10-28 12:18:44,050 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label25.c [2020-10-28 12:18:44,063 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:18:44,070 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:18:44,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:18:44,121 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:18:44,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:18:44,122 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:18:44,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:18:44,122 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:18:44,122 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:18:44,122 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:18:44,122 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:18:44,160 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:18:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 12:18:44,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:44,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:44,169 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1035873092, now seen corresponding path program 1 times [2020-10-28 12:18:44,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:44,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289019659] [2020-10-28 12:18:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:44,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:44,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 12:18:44,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:44,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-28 12:18:44,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:44,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:18:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 12:18:44,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:18:45,189 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:18:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:45,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:45,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:45,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:45,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:18:45,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:45,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:18:45,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:18:45,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289019659] [2020-10-28 12:18:45,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:18:45,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:18:45,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200410153] [2020-10-28 12:18:45,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:18:45,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:45,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:18:45,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:18:45,326 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:18:45,504 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:18:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:56,300 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:18:56,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:18:56,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 12:18:56,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:56,335 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:18:56,336 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:18:56,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:18:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:18:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:18:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:18:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-28 12:18:56,537 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 24 [2020-10-28 12:18:56,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:56,538 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-28 12:18:56,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:18:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-28 12:18:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 12:18:56,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:56,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:56,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:18:56,544 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:56,545 INFO L82 PathProgramCache]: Analyzing trace with hash -179090554, now seen corresponding path program 1 times [2020-10-28 12:18:56,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:56,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869033111] [2020-10-28 12:18:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:57,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:57,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:57,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:18:57,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1291 [2020-10-28 12:18:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:57,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:18:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:18:57,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:18:57,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:58,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:58,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:58,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:58,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:18:58,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:58,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:18:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:58,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:58,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:58,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:18:58,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:58,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 12:18:58,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:58,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:18:58,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:18:58,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869033111] [2020-10-28 12:18:58,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:18:58,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:18:58,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514572685] [2020-10-28 12:18:58,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:18:58,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:58,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:18:58,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:58,342 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-28 12:19:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:12,478 INFO L93 Difference]: Finished difference Result 4784 states and 8428 transitions. [2020-10-28 12:19:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:19:12,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-28 12:19:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:12,504 INFO L225 Difference]: With dead ends: 4784 [2020-10-28 12:19:12,504 INFO L226 Difference]: Without dead ends: 3236 [2020-10-28 12:19:12,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:19:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2020-10-28 12:19:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3144. [2020-10-28 12:19:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3144 states. [2020-10-28 12:19:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4843 transitions. [2020-10-28 12:19:12,681 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4843 transitions. Word has length 93 [2020-10-28 12:19:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:12,681 INFO L481 AbstractCegarLoop]: Abstraction has 3144 states and 4843 transitions. [2020-10-28 12:19:12,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4843 transitions. [2020-10-28 12:19:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 12:19:12,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:12,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:12,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:19:12,685 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:12,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:12,686 INFO L82 PathProgramCache]: Analyzing trace with hash 338631354, now seen corresponding path program 1 times [2020-10-28 12:19:12,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:12,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247335693] [2020-10-28 12:19:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:13,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:13,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:19:13,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-28 12:19:13,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:13,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:19:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 12:19:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:13,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:13,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:13,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:13,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:19:13,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:13,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:13,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:13,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:13,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:19:13,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:19:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:13,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:19:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:19:13,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247335693] [2020-10-28 12:19:13,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:13,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:19:13,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516162472] [2020-10-28 12:19:13,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:19:13,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:13,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:19:13,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:19:13,383 INFO L87 Difference]: Start difference. First operand 3144 states and 4843 transitions. Second operand 6 states. [2020-10-28 12:19:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:30,391 INFO L93 Difference]: Finished difference Result 7874 states and 12616 transitions. [2020-10-28 12:19:30,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:19:30,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-28 12:19:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:30,426 INFO L225 Difference]: With dead ends: 7874 [2020-10-28 12:19:30,426 INFO L226 Difference]: Without dead ends: 4736 [2020-10-28 12:19:30,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:19:30,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2020-10-28 12:19:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 4705. [2020-10-28 12:19:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4705 states. [2020-10-28 12:19:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4705 states to 4705 states and 6478 transitions. [2020-10-28 12:19:30,584 INFO L78 Accepts]: Start accepts. Automaton has 4705 states and 6478 transitions. Word has length 99 [2020-10-28 12:19:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:30,585 INFO L481 AbstractCegarLoop]: Abstraction has 4705 states and 6478 transitions. [2020-10-28 12:19:30,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:19:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4705 states and 6478 transitions. [2020-10-28 12:19:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 12:19:30,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:30,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:30,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:19:30,590 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:30,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:30,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1388624602, now seen corresponding path program 1 times [2020-10-28 12:19:30,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:30,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679341802] [2020-10-28 12:19:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:30,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:31,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:31,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 12:19:31,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-10-28 12:19:31,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:31,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:19:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 12:19:31,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:31,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:31,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:19:31,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:31,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:19:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:31,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:32,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:32,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:19:32,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:32,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 12:19:32,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:32,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:19:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:19:32,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679341802] [2020-10-28 12:19:32,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:19:32,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:19:32,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885369661] [2020-10-28 12:19:32,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:32,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:32,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:32,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:32,346 INFO L87 Difference]: Start difference. First operand 4705 states and 6478 transitions. Second operand 7 states. [2020-10-28 12:19:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:49,046 INFO L93 Difference]: Finished difference Result 14372 states and 20115 transitions. [2020-10-28 12:19:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:19:49,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-28 12:19:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:49,107 INFO L225 Difference]: With dead ends: 14372 [2020-10-28 12:19:49,108 INFO L226 Difference]: Without dead ends: 9673 [2020-10-28 12:19:49,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:19:49,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9673 states. [2020-10-28 12:19:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9673 to 9525. [2020-10-28 12:19:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9525 states. [2020-10-28 12:19:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9525 states to 9525 states and 12209 transitions. [2020-10-28 12:19:49,403 INFO L78 Accepts]: Start accepts. Automaton has 9525 states and 12209 transitions. Word has length 141 [2020-10-28 12:19:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:49,403 INFO L481 AbstractCegarLoop]: Abstraction has 9525 states and 12209 transitions. [2020-10-28 12:19:49,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:49,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9525 states and 12209 transitions. [2020-10-28 12:19:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 12:19:49,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:49,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:49,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:19:49,409 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:49,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:49,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1144357230, now seen corresponding path program 1 times [2020-10-28 12:19:49,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:49,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156256502] [2020-10-28 12:19:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:49,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:50,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:50,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 12:19:50,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:50,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-10-28 12:19:50,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:50,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:19:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 12:19:50,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:50,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:50,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:50,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:50,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:19:50,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:50,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:50,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:50,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:50,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:50,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:19:50,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:50,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 12:19:50,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:50,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:50,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:50,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:19:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:19:51,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156256502] [2020-10-28 12:19:51,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:51,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:19:51,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615163425] [2020-10-28 12:19:51,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:19:51,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:19:51,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:19:51,084 INFO L87 Difference]: Start difference. First operand 9525 states and 12209 transitions. Second operand 5 states. [2020-10-28 12:19:51,229 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:20:06,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:06,227 INFO L93 Difference]: Finished difference Result 27697 states and 36483 transitions. [2020-10-28 12:20:06,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:20:06,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 12:20:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:06,343 INFO L225 Difference]: With dead ends: 27697 [2020-10-28 12:20:06,343 INFO L226 Difference]: Without dead ends: 18178 [2020-10-28 12:20:06,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:20:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18178 states. [2020-10-28 12:20:06,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18178 to 17403. [2020-10-28 12:20:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17403 states. [2020-10-28 12:20:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17403 states to 17403 states and 21250 transitions. [2020-10-28 12:20:06,945 INFO L78 Accepts]: Start accepts. Automaton has 17403 states and 21250 transitions. Word has length 169 [2020-10-28 12:20:06,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:06,946 INFO L481 AbstractCegarLoop]: Abstraction has 17403 states and 21250 transitions. [2020-10-28 12:20:06,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:20:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 17403 states and 21250 transitions. [2020-10-28 12:20:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 12:20:06,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:06,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:06,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:20:06,950 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1599983696, now seen corresponding path program 1 times [2020-10-28 12:20:06,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:06,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684984271] [2020-10-28 12:20:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:07,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:07,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:09,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:09,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 12:20:09,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:20:09,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2269 [2020-10-28 12:20:09,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:09,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:20:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:20:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:09,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:09,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:09,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:09,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:09,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:20:09,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:09,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:09,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:09,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:09,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:09,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:20:09,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:09,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:20:09,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:09,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:20:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:09,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:20:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:09,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:09,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:20:09,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:09,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 12:20:09,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:09,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:20:09,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:20:09,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684984271] [2020-10-28 12:20:09,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:09,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:20:09,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488421240] [2020-10-28 12:20:09,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:20:09,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:09,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:20:09,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:20:09,870 INFO L87 Difference]: Start difference. First operand 17403 states and 21250 transitions. Second operand 7 states. [2020-10-28 12:20:27,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:27,676 INFO L93 Difference]: Finished difference Result 48591 states and 61973 transitions. [2020-10-28 12:20:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:20:27,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-28 12:20:27,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:27,822 INFO L225 Difference]: With dead ends: 48591 [2020-10-28 12:20:27,823 INFO L226 Difference]: Without dead ends: 31194 [2020-10-28 12:20:27,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:20:27,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31194 states. [2020-10-28 12:20:28,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31194 to 28774. [2020-10-28 12:20:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28774 states. [2020-10-28 12:20:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28774 states to 28774 states and 35266 transitions. [2020-10-28 12:20:28,652 INFO L78 Accepts]: Start accepts. Automaton has 28774 states and 35266 transitions. Word has length 180 [2020-10-28 12:20:28,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:28,653 INFO L481 AbstractCegarLoop]: Abstraction has 28774 states and 35266 transitions. [2020-10-28 12:20:28,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 28774 states and 35266 transitions. [2020-10-28 12:20:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 12:20:28,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:28,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:28,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:20:28,658 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:28,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1040628054, now seen corresponding path program 1 times [2020-10-28 12:20:28,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:28,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100578058] [2020-10-28 12:20:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:28,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:29,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:30,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 12:20:30,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:20:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-10-28 12:20:30,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:30,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:20:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:20:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:30,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:30,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:30,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:20:30,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:30,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:30,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:20:30,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:30,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:20:30,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:30,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:20:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:20:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:30,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:30,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:20:30,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:20:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-28 12:20:30,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:30,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:20:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 12:20:30,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100578058] [2020-10-28 12:20:30,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:30,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:20:30,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910700474] [2020-10-28 12:20:30,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:20:30,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:30,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:20:30,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:20:30,884 INFO L87 Difference]: Start difference. First operand 28774 states and 35266 transitions. Second operand 6 states. [2020-10-28 12:20:31,107 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:20:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:57,625 INFO L93 Difference]: Finished difference Result 69400 states and 87285 transitions. [2020-10-28 12:20:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:20:57,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-28 12:20:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:57,797 INFO L225 Difference]: With dead ends: 69400 [2020-10-28 12:20:57,798 INFO L226 Difference]: Without dead ends: 41399 [2020-10-28 12:20:57,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:20:57,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41399 states. [2020-10-28 12:20:58,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41399 to 39843. [2020-10-28 12:20:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39843 states. [2020-10-28 12:20:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39843 states to 39843 states and 49878 transitions. [2020-10-28 12:20:58,927 INFO L78 Accepts]: Start accepts. Automaton has 39843 states and 49878 transitions. Word has length 213 [2020-10-28 12:20:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:58,928 INFO L481 AbstractCegarLoop]: Abstraction has 39843 states and 49878 transitions. [2020-10-28 12:20:58,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:20:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 39843 states and 49878 transitions. [2020-10-28 12:20:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-28 12:20:58,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:58,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:58,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:20:58,938 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:58,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:58,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1604170676, now seen corresponding path program 1 times [2020-10-28 12:20:58,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:58,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006247302] [2020-10-28 12:20:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:02,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:02,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-28 12:21:02,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:21:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3000 [2020-10-28 12:21:02,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:02,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:21:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 12:21:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:02,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:02,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:02,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:02,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:02,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:21:02,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:02,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:02,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:02,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:21:02,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:21:02,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:02,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:21:02,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:21:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:02,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:02,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:02,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:21:02,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:21:02,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-28 12:21:02,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:02,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:21:02,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:21:03,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006247302] [2020-10-28 12:21:03,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:03,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:21:03,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526473779] [2020-10-28 12:21:03,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:21:03,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:03,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:21:03,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:21:03,090 INFO L87 Difference]: Start difference. First operand 39843 states and 49878 transitions. Second operand 6 states. [2020-10-28 12:21:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:36,105 INFO L93 Difference]: Finished difference Result 106974 states and 143020 transitions. [2020-10-28 12:21:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:21:36,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2020-10-28 12:21:36,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:36,458 INFO L225 Difference]: With dead ends: 106974 [2020-10-28 12:21:36,458 INFO L226 Difference]: Without dead ends: 81855 [2020-10-28 12:21:36,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:21:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81855 states. [2020-10-28 12:21:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81855 to 80321. [2020-10-28 12:21:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80321 states. [2020-10-28 12:21:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80321 states to 80321 states and 103294 transitions. [2020-10-28 12:21:39,150 INFO L78 Accepts]: Start accepts. Automaton has 80321 states and 103294 transitions. Word has length 286 [2020-10-28 12:21:39,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:39,151 INFO L481 AbstractCegarLoop]: Abstraction has 80321 states and 103294 transitions. [2020-10-28 12:21:39,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:21:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 80321 states and 103294 transitions. [2020-10-28 12:21:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-28 12:21:39,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:39,200 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:39,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:21:39,201 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:39,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:39,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1699709396, now seen corresponding path program 1 times [2020-10-28 12:21:39,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:39,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103646569] [2020-10-28 12:21:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:39,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:39,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:41,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:44,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:44,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-28 12:21:44,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:21:44,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-28 12:21:44,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:44,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-28 12:21:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 12:21:44,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:44,660 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:21:44,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:44,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:44,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:21:44,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:44,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:44,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:44,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:21:44,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:21:44,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:44,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:21:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:44,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:44,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 12:21:44,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:21:44,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:44,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:21:44,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:45,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-28 12:21:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:45,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:45,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:21:45,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-28 12:21:45,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:45,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:21:45,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-28 12:21:45,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103646569] [2020-10-28 12:21:45,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:45,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:21:45,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772632504] [2020-10-28 12:21:45,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:45,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:45,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:45,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:45,857 INFO L87 Difference]: Start difference. First operand 80321 states and 103294 transitions. Second operand 7 states. [2020-10-28 12:21:47,793 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:22:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:11,067 INFO L93 Difference]: Finished difference Result 180473 states and 239834 transitions. [2020-10-28 12:22:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:22:11,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 366 [2020-10-28 12:22:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:12,164 INFO L225 Difference]: With dead ends: 180473 [2020-10-28 12:22:12,164 INFO L226 Difference]: Without dead ends: 100925 [2020-10-28 12:22:12,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:22:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100925 states. [2020-10-28 12:22:15,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100925 to 97608. [2020-10-28 12:22:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97608 states. [2020-10-28 12:22:16,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97608 states to 97608 states and 124223 transitions. [2020-10-28 12:22:16,293 INFO L78 Accepts]: Start accepts. Automaton has 97608 states and 124223 transitions. Word has length 366 [2020-10-28 12:22:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:16,294 INFO L481 AbstractCegarLoop]: Abstraction has 97608 states and 124223 transitions. [2020-10-28 12:22:16,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:22:16,294 INFO L276 IsEmpty]: Start isEmpty. Operand 97608 states and 124223 transitions. [2020-10-28 12:22:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-28 12:22:16,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:16,325 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:16,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:22:16,326 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:16,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:16,327 INFO L82 PathProgramCache]: Analyzing trace with hash -111982576, now seen corresponding path program 1 times [2020-10-28 12:22:16,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:16,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548047254] [2020-10-28 12:22:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking...