/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/Problem13_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:39:45,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:39:45,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:39:45,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:39:45,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:39:45,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:39:45,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:39:45,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:39:45,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:39:45,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:39:45,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:39:45,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:39:45,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:39:45,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:39:45,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:39:45,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:39:45,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:39:45,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:39:45,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:39:45,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:39:45,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:39:45,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:39:45,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:39:45,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:39:45,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:39:45,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:39:45,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:39:45,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:39:45,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:39:45,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:39:45,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:39:45,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:39:45,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:39:45,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:39:45,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:39:45,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:39:45,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:39:45,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:39:45,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:39:45,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:39:45,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:39:45,170 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 12:39:45,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:39:45,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:39:45,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:39:45,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:39:45,236 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:39:45,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:39:45,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:39:45,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:39:45,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:39:45,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:39:45,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:39:45,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:39:45,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:39:45,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:39:45,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:39:45,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:39:45,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:39:45,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:39:45,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:39:45,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:39:45,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:39:45,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:39:45,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:39:45,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:39:45,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:39:45,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:39:45,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:39:45,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:39:45,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:39:45,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:39:45,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:39:45,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:39:45,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:39:45,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:39:45,781 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:39:45,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label40.c [2020-10-28 12:39:45,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d411de2ec/09ce0762f4cf4b98928eb7fdf0f63edc/FLAGc5d228250 [2020-10-28 12:39:47,230 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:39:47,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label40.c [2020-10-28 12:39:47,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d411de2ec/09ce0762f4cf4b98928eb7fdf0f63edc/FLAGc5d228250 [2020-10-28 12:39:47,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d411de2ec/09ce0762f4cf4b98928eb7fdf0f63edc [2020-10-28 12:39:47,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:39:47,463 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:39:47,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:39:47,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:39:47,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:39:47,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:39:47" (1/1) ... [2020-10-28 12:39:47,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b19e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:47, skipping insertion in model container [2020-10-28 12:39:47,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:39:47" (1/1) ... [2020-10-28 12:39:47,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:39:47,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:39:49,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:39:49,640 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:39:50,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:39:50,533 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:39:50,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50 WrapperNode [2020-10-28 12:39:50,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:39:50,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:39:50,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:39:50,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:39:50,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50" (1/1) ... [2020-10-28 12:39:50,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50" (1/1) ... [2020-10-28 12:39:50,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50" (1/1) ... [2020-10-28 12:39:50,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50" (1/1) ... [2020-10-28 12:39:50,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50" (1/1) ... [2020-10-28 12:39:50,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50" (1/1) ... [2020-10-28 12:39:50,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50" (1/1) ... [2020-10-28 12:39:51,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:39:51,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:39:51,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:39:51,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:39:51,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50" (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 12:39:51,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:39:51,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:39:51,120 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:39:51,121 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:39:51,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:39:51,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:39:51,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:39:51,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:39:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:39:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:39:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:39:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:39:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:39:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:39:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:39:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:39:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:39:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:39:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:39:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:39:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:40:02,749 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:40:02,750 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:40:02,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:40:02 BoogieIcfgContainer [2020-10-28 12:40:02,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:40:02,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:40:02,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:40:02,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:40:02,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:39:47" (1/3) ... [2020-10-28 12:40:02,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10524ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:40:02, skipping insertion in model container [2020-10-28 12:40:02,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:39:50" (2/3) ... [2020-10-28 12:40:02,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10524ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:40:02, skipping insertion in model container [2020-10-28 12:40:02,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:40:02" (3/3) ... [2020-10-28 12:40:02,776 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label40.c [2020-10-28 12:40:02,797 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:40:02,805 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:40:02,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:40:02,890 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:40:02,891 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:40:02,891 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:40:02,891 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:40:02,891 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:40:02,891 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:40:02,892 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:40:02,892 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:40:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:40:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 12:40:02,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:02,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:40:02,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:02,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2065792798, now seen corresponding path program 1 times [2020-10-28 12:40:02,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:02,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126196952] [2020-10-28 12:40:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:03,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:03,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 12:40:03,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:03,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-28 12:40:03,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:03,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:40:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:40:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 12:40:03,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-28 12:40:04,176 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:40:04,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:40:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:04,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:04,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:04,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:40:04,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:40:04,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:04,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:40:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:40:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:04,301 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 12:40:04,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126196952] [2020-10-28 12:40:04,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:40:04,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:40:04,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210516140] [2020-10-28 12:40:04,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:40:04,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:40:04,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:40:04,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:40:04,342 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:40:04,506 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:40:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:40:29,114 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-28 12:40:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:40:29,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-28 12:40:29,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:40:29,157 INFO L225 Difference]: With dead ends: 3235 [2020-10-28 12:40:29,158 INFO L226 Difference]: Without dead ends: 2027 [2020-10-28 12:40:29,172 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 12:40:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-28 12:40:29,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-28 12:40:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-28 12:40:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-28 12:40:29,374 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 35 [2020-10-28 12:40:29,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:40:29,375 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-28 12:40:29,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:40:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-28 12:40:29,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 12:40:29,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:29,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:29,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:40:29,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:29,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:29,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1299958039, now seen corresponding path program 1 times [2020-10-28 12:40:29,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:29,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326711449] [2020-10-28 12:40:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:29,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:30,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:40:30,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:40:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-10-28 12:40:30,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:30,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:40:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:40:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:40:30,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:40:31,073 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:40:31,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:40:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:31,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:31,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:31,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:40:31,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:31,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:40:31,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:31,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:40:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:40:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:40:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:31,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:31,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:40:31,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 12:40:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:31,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:40:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:40:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:40:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:40:31,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326711449] [2020-10-28 12:40:31,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:40:31,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:40:31,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236656198] [2020-10-28 12:40:31,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:40:31,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:40:31,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:40:31,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:40:31,470 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-28 12:40:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:40:59,949 INFO L93 Difference]: Finished difference Result 5857 states and 9674 transitions. [2020-10-28 12:40:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:40:59,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-28 12:40:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:40:59,987 INFO L225 Difference]: With dead ends: 5857 [2020-10-28 12:40:59,987 INFO L226 Difference]: Without dead ends: 3853 [2020-10-28 12:40:59,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 12:41:00,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2020-10-28 12:41:00,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3762. [2020-10-28 12:41:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3762 states. [2020-10-28 12:41:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5630 transitions. [2020-10-28 12:41:00,147 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5630 transitions. Word has length 110 [2020-10-28 12:41:00,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:41:00,150 INFO L481 AbstractCegarLoop]: Abstraction has 3762 states and 5630 transitions. [2020-10-28 12:41:00,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:41:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5630 transitions. [2020-10-28 12:41:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 12:41:00,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:41:00,161 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:00,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:41:00,162 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:41:00,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:41:00,163 INFO L82 PathProgramCache]: Analyzing trace with hash 469073765, now seen corresponding path program 1 times [2020-10-28 12:41:00,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:41:00,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728816922] [2020-10-28 12:41:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:41:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:00,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:01,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:01,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 12:41:01,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:41:01,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-10-28 12:41:01,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:01,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:41:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:41:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:41:01,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:41:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:41:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:01,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:01,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:01,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:41:01,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:41:01,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:01,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:41:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:41:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:41:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:41:01,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:41:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:01,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:01,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:41:01,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 12:41:01,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:01,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:41:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:41:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:41:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:41:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:41:02,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728816922] [2020-10-28 12:41:02,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:41:02,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:41:02,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151742560] [2020-10-28 12:41:02,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:41:02,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:41:02,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:41:02,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:41:02,092 INFO L87 Difference]: Start difference. First operand 3762 states and 5630 transitions. Second operand 7 states. [2020-10-28 12:41:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:41:30,722 INFO L93 Difference]: Finished difference Result 11132 states and 16928 transitions. [2020-10-28 12:41:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:41:30,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-28 12:41:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:41:30,772 INFO L225 Difference]: With dead ends: 11132 [2020-10-28 12:41:30,772 INFO L226 Difference]: Without dead ends: 7376 [2020-10-28 12:41:30,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:41:30,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2020-10-28 12:41:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 7182. [2020-10-28 12:41:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7182 states. [2020-10-28 12:41:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 10073 transitions. [2020-10-28 12:41:30,992 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 10073 transitions. Word has length 124 [2020-10-28 12:41:30,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:41:30,993 INFO L481 AbstractCegarLoop]: Abstraction has 7182 states and 10073 transitions. [2020-10-28 12:41:30,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:41:30,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 10073 transitions. [2020-10-28 12:41:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 12:41:30,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:41:30,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:30,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:41:30,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:41:30,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:41:30,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1682064441, now seen corresponding path program 1 times [2020-10-28 12:41:30,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:41:30,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846395891] [2020-10-28 12:41:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:41:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:32,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:32,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 12:41:32,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:41:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1508 [2020-10-28 12:41:32,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:32,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:41:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:41:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:41:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:41:32,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:41:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:32,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:32,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:41:32,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:41:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:32,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:41:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:41:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:41:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:41:32,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:41:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:33,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:33,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 12:41:33,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:33,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 12:41:33,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:33,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:41:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:41:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:41:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:41:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:41:33,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846395891] [2020-10-28 12:41:33,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:41:33,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:41:33,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126682647] [2020-10-28 12:41:33,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:41:33,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:41:33,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:41:33,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:41:33,194 INFO L87 Difference]: Start difference. First operand 7182 states and 10073 transitions. Second operand 7 states. [2020-10-28 12:42:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:42:00,823 INFO L93 Difference]: Finished difference Result 15978 states and 23678 transitions. [2020-10-28 12:42:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:42:00,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-28 12:42:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:42:00,871 INFO L225 Difference]: With dead ends: 15978 [2020-10-28 12:42:00,871 INFO L226 Difference]: Without dead ends: 8802 [2020-10-28 12:42:00,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:42:00,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8802 states. [2020-10-28 12:42:01,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8802 to 8362. [2020-10-28 12:42:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8362 states. [2020-10-28 12:42:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8362 states to 8362 states and 11175 transitions. [2020-10-28 12:42:01,153 INFO L78 Accepts]: Start accepts. Automaton has 8362 states and 11175 transitions. Word has length 150 [2020-10-28 12:42:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:42:01,154 INFO L481 AbstractCegarLoop]: Abstraction has 8362 states and 11175 transitions. [2020-10-28 12:42:01,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:42:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 8362 states and 11175 transitions. [2020-10-28 12:42:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 12:42:01,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:42:01,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:01,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:42:01,157 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:42:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:42:01,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1442921468, now seen corresponding path program 1 times [2020-10-28 12:42:01,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:42:01,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542618977] [2020-10-28 12:42:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:42:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:01,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:01,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:42:01,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:01,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-28 12:42:01,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:01,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:42:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:42:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 12:42:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:01,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:42:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:01,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:01,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:42:01,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:42:01,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:01,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:42:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:42:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:42:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:01,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:42:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:01,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:01,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:01,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:42:01,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 12:42:01,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:01,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:42:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:42:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:42:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:42:02,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542618977] [2020-10-28 12:42:02,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:42:02,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:42:02,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342791277] [2020-10-28 12:42:02,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:42:02,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:42:02,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:42:02,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:42:02,125 INFO L87 Difference]: Start difference. First operand 8362 states and 11175 transitions. Second operand 5 states. [2020-10-28 12:42:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:42:27,610 INFO L93 Difference]: Finished difference Result 19480 states and 26349 transitions. [2020-10-28 12:42:27,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:42:27,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-28 12:42:27,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:42:27,658 INFO L225 Difference]: With dead ends: 19480 [2020-10-28 12:42:27,658 INFO L226 Difference]: Without dead ends: 11927 [2020-10-28 12:42:27,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:42:27,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11927 states. [2020-10-28 12:42:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11927 to 11894. [2020-10-28 12:42:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11894 states. [2020-10-28 12:42:28,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11894 states to 11894 states and 15436 transitions. [2020-10-28 12:42:28,024 INFO L78 Accepts]: Start accepts. Automaton has 11894 states and 15436 transitions. Word has length 164 [2020-10-28 12:42:28,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:42:28,024 INFO L481 AbstractCegarLoop]: Abstraction has 11894 states and 15436 transitions. [2020-10-28 12:42:28,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:42:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 11894 states and 15436 transitions. [2020-10-28 12:42:28,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-28 12:42:28,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:42:28,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:42:28,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:42:28,029 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:42:28,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:42:28,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1032437766, now seen corresponding path program 1 times [2020-10-28 12:42:28,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:42:28,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561700153] [2020-10-28 12:42:28,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:42:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:28,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:28,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 12:42:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:42:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 12:42:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:33,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:42:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:42:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 12:42:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:42:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:33,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:33,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:33,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:42:33,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:33,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:42:33,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:33,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:42:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:42:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:42:33,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:42:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:33,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:33,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:33,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:42:33,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:33,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:42:33,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:33,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:42:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:42:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:42:33,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:33,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:42:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:33,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:33,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:42:33,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:33,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:42:33,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:33,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:42:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 12:42:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:42:33,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 54 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:42:33,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561700153] [2020-10-28 12:42:33,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:42:33,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:42:33,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336430559] [2020-10-28 12:42:33,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:42:33,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:42:33,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:42:33,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:42:33,874 INFO L87 Difference]: Start difference. First operand 11894 states and 15436 transitions. Second operand 7 states. [2020-10-28 12:42:35,502 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 12:43:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:43:00,197 INFO L93 Difference]: Finished difference Result 23444 states and 30731 transitions. [2020-10-28 12:43:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:43:00,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-28 12:43:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:43:00,247 INFO L225 Difference]: With dead ends: 23444 [2020-10-28 12:43:00,247 INFO L226 Difference]: Without dead ends: 12359 [2020-10-28 12:43:00,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:43:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12359 states. [2020-10-28 12:43:00,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12359 to 12029. [2020-10-28 12:43:00,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12029 states. [2020-10-28 12:43:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12029 states to 12029 states and 15626 transitions. [2020-10-28 12:43:00,627 INFO L78 Accepts]: Start accepts. Automaton has 12029 states and 15626 transitions. Word has length 217 [2020-10-28 12:43:00,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:43:00,627 INFO L481 AbstractCegarLoop]: Abstraction has 12029 states and 15626 transitions. [2020-10-28 12:43:00,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:43:00,628 INFO L276 IsEmpty]: Start isEmpty. Operand 12029 states and 15626 transitions. [2020-10-28 12:43:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 12:43:00,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:43:00,632 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:43:00,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:43:00,632 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:43:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:43:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 611321473, now seen corresponding path program 1 times [2020-10-28 12:43:00,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:43:00,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783209553] [2020-10-28 12:43:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:43:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:03,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:03,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 12:43:03,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:43:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3031 [2020-10-28 12:43:03,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:03,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:43:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:43:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:03,886 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:43:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:43:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:03,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:03,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:43:03,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:03,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:43:03,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:03,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:43:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:43:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:03,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:43:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:04,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:04,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:43:04,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:43:04,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:04,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:43:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:43:04,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:43:04,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:43:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:04,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:04,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:04,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:43:04,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 12:43:04,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:04,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:43:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:43:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:43:04,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783209553] [2020-10-28 12:43:04,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:43:04,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:43:04,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945841179] [2020-10-28 12:43:04,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:43:04,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:43:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:43:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:43:04,502 INFO L87 Difference]: Start difference. First operand 12029 states and 15626 transitions. Second operand 7 states. [2020-10-28 12:43:04,678 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:43:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:43:39,084 INFO L93 Difference]: Finished difference Result 34283 states and 47208 transitions. [2020-10-28 12:43:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:43:39,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-28 12:43:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:43:39,179 INFO L225 Difference]: With dead ends: 34283 [2020-10-28 12:43:39,180 INFO L226 Difference]: Without dead ends: 23063 [2020-10-28 12:43:39,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:43:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23063 states. [2020-10-28 12:43:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23063 to 20156. [2020-10-28 12:43:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20156 states. [2020-10-28 12:43:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20156 states to 20156 states and 25418 transitions. [2020-10-28 12:43:39,852 INFO L78 Accepts]: Start accepts. Automaton has 20156 states and 25418 transitions. Word has length 224 [2020-10-28 12:43:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:43:39,853 INFO L481 AbstractCegarLoop]: Abstraction has 20156 states and 25418 transitions. [2020-10-28 12:43:39,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:43:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 20156 states and 25418 transitions. [2020-10-28 12:43:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-28 12:43:39,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:43:39,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:43:39,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:43:39,859 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:43:39,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:43:39,860 INFO L82 PathProgramCache]: Analyzing trace with hash -666461279, now seen corresponding path program 1 times [2020-10-28 12:43:39,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:43:39,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886613496] [2020-10-28 12:43:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:43:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:39,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:41,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:41,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-28 12:43:41,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:43:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1259 [2020-10-28 12:43:41,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:41,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:43:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:43:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:41,372 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:43:41,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:43:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:41,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:41,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:41,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:43:41,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:43:41,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:41,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:43:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:43:41,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:43:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:43:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:41,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:41,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:41,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:43:41,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:41,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 12:43:41,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:41,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:41,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:43:41,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:41,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:43:41,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:41,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:43:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:41,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:41,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:43:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 12:43:41,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:41,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:43:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:43:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:43:42,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886613496] [2020-10-28 12:43:42,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:43:42,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:43:42,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891301483] [2020-10-28 12:43:42,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:43:42,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:43:42,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:43:42,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:43:42,131 INFO L87 Difference]: Start difference. First operand 20156 states and 25418 transitions. Second operand 7 states.