/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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:13:08,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:13:08,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:13:08,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:13:08,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:13:08,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:13:08,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:13:08,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:13:08,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:13:08,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:13:08,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:13:08,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:13:08,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:13:08,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:13:08,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:13:08,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:13:08,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:13:08,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:13:08,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:13:08,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:13:08,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:13:08,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:13:08,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:13:08,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:13:08,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:13:08,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:13:08,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:13:08,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:13:08,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:13:08,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:13:08,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:13:08,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:13:08,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:13:08,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:13:08,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:13:08,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:13:08,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:13:08,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:13:08,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:13:08,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:13:08,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:13:08,533 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 12:13:08,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:13:08,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:13:08,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:13:08,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:13:08,571 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:13:08,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:13:08,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:13:08,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:13:08,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:13:08,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:13:08,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:13:08,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:13:08,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:13:08,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:13:08,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:13:08,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:13:08,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:13:08,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:13:08,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:13:08,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:13:08,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:13:08,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:13:08,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:13:08,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:13:08,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:13:08,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:13:08,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:13:08,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:13:08,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:13:08,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:13:08,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:13:09,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:13:09,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:13:09,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:13:09,029 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:13:09,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02.c [2020-10-28 12:13:09,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bc3ff3b5/dc90025ff15b4d6fabb6963b335f5a30/FLAG4400e124d [2020-10-28 12:13:10,095 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:13:10,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label02.c [2020-10-28 12:13:10,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bc3ff3b5/dc90025ff15b4d6fabb6963b335f5a30/FLAG4400e124d [2020-10-28 12:13:10,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bc3ff3b5/dc90025ff15b4d6fabb6963b335f5a30 [2020-10-28 12:13:10,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:13:10,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:13:10,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:13:10,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:13:10,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:13:10,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:13:10" (1/1) ... [2020-10-28 12:13:10,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2460f1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:10, skipping insertion in model container [2020-10-28 12:13:10,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:13:10" (1/1) ... [2020-10-28 12:13:10,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:13:10,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:13:12,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:13:12,324 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:13:13,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:13:13,148 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:13:13,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13 WrapperNode [2020-10-28 12:13:13,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:13:13,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:13:13,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:13:13,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:13:13,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:13:13,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:13:13,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:13:13,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:13:13,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (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 12:13:13,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:13:13,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:13:13,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:13:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:13:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:13:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:13:13,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:13:13,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:13:13,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:13:13,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:13:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:13:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:13:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:13:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:13:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:13:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:13:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:13:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:13:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:13:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:13:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:13:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:13:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:13:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:13:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:13:19,218 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:13:19,219 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:13:19,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:13:19 BoogieIcfgContainer [2020-10-28 12:13:19,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:13:19,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:13:19,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:13:19,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:13:19,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:13:10" (1/3) ... [2020-10-28 12:13:19,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc3c3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:13:19, skipping insertion in model container [2020-10-28 12:13:19,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (2/3) ... [2020-10-28 12:13:19,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc3c3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:13:19, skipping insertion in model container [2020-10-28 12:13:19,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:13:19" (3/3) ... [2020-10-28 12:13:19,237 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label02.c [2020-10-28 12:13:19,251 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:13:19,257 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:13:19,271 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:13:19,306 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:13:19,306 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:13:19,306 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:13:19,307 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:13:19,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:13:19,307 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:13:19,307 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:13:19,307 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:13:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:13:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 12:13:19,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:19,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:19,355 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:19,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:19,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1563638020, now seen corresponding path program 1 times [2020-10-28 12:13:19,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:19,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107928154] [2020-10-28 12:13:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:19,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:20,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:20,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:13:20,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:20,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-28 12:13:20,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:20,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:20,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:20,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:13:20,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:13:20,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:13:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:20,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:20,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:20,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:13:20,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:20,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:13:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:20,459 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 12:13:20,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107928154] [2020-10-28 12:13:20,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:13:20,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:13:20,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115928695] [2020-10-28 12:13:20,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:13:20,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:20,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:13:20,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:20,487 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:13:21,252 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:13:36,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:36,692 INFO L93 Difference]: Finished difference Result 3258 states and 6300 transitions. [2020-10-28 12:13:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:13:36,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-28 12:13:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:36,746 INFO L225 Difference]: With dead ends: 3258 [2020-10-28 12:13:36,746 INFO L226 Difference]: Without dead ends: 2347 [2020-10-28 12:13:36,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-28 12:13:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-28 12:13:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-28 12:13:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3788 transitions. [2020-10-28 12:13:36,945 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3788 transitions. Word has length 69 [2020-10-28 12:13:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:36,946 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3788 transitions. [2020-10-28 12:13:36,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:13:36,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3788 transitions. [2020-10-28 12:13:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 12:13:36,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:36,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:13:36,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:13:36,956 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:36,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:36,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2055415739, now seen corresponding path program 1 times [2020-10-28 12:13:36,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:36,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516689819] [2020-10-28 12:13:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:13:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:13:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-28 12:13:38,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:38,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:13:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 12:13:38,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:13:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:38,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:38,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:38,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:38,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:13:38,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:38,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:38,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:38,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:38,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:13:38,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:38,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:13:38,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:38,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:13:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:13:39,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516689819] [2020-10-28 12:13:39,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:39,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:13:39,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845255213] [2020-10-28 12:13:39,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:13:39,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:39,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:13:39,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:39,051 INFO L87 Difference]: Start difference. First operand 2332 states and 3788 transitions. Second operand 5 states. [2020-10-28 12:13:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:51,363 INFO L93 Difference]: Finished difference Result 7007 states and 11521 transitions. [2020-10-28 12:13:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:13:51,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-28 12:13:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:51,402 INFO L225 Difference]: With dead ends: 7007 [2020-10-28 12:13:51,402 INFO L226 Difference]: Without dead ends: 4681 [2020-10-28 12:13:51,410 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 12:13:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-28 12:13:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4668. [2020-10-28 12:13:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4668 states. [2020-10-28 12:13:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 6705 transitions. [2020-10-28 12:13:51,540 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 6705 transitions. Word has length 144 [2020-10-28 12:13:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:51,540 INFO L481 AbstractCegarLoop]: Abstraction has 4668 states and 6705 transitions. [2020-10-28 12:13:51,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:13:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 6705 transitions. [2020-10-28 12:13:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 12:13:51,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:51,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:51,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:13:51,544 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:51,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:51,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1705722957, now seen corresponding path program 1 times [2020-10-28 12:13:51,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:51,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453443268] [2020-10-28 12:13:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:52,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:52,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:13:52,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:13:52,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1302 [2020-10-28 12:13:52,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:52,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:52,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:13:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:13:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:53,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:53,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:53,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:53,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:13:53,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:53,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:13:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:53,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:53,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:53,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:53,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:13:53,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:53,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 12:13:53,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:53,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:53,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:13:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:13:53,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453443268] [2020-10-28 12:13:53,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:13:53,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:13:53,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082195265] [2020-10-28 12:13:53,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:53,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:53,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:53,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:53,384 INFO L87 Difference]: Start difference. First operand 4668 states and 6705 transitions. Second operand 7 states. [2020-10-28 12:14:10,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:10,386 INFO L93 Difference]: Finished difference Result 14209 states and 20986 transitions. [2020-10-28 12:14:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:14:10,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-10-28 12:14:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:10,437 INFO L225 Difference]: With dead ends: 14209 [2020-10-28 12:14:10,438 INFO L226 Difference]: Without dead ends: 9547 [2020-10-28 12:14:10,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2020-10-28 12:14:10,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 9450. [2020-10-28 12:14:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9450 states. [2020-10-28 12:14:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9450 states to 9450 states and 12944 transitions. [2020-10-28 12:14:10,722 INFO L78 Accepts]: Start accepts. Automaton has 9450 states and 12944 transitions. Word has length 148 [2020-10-28 12:14:10,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:10,723 INFO L481 AbstractCegarLoop]: Abstraction has 9450 states and 12944 transitions. [2020-10-28 12:14:10,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 9450 states and 12944 transitions. [2020-10-28 12:14:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 12:14:10,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:10,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:14:10,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:14:10,727 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:10,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:10,728 INFO L82 PathProgramCache]: Analyzing trace with hash -2049158511, now seen corresponding path program 1 times [2020-10-28 12:14:10,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:10,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568706286] [2020-10-28 12:14:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:11,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:12,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 12:14:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-10-28 12:14:12,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:12,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:14:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:14:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:14:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:12,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:12,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:12,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:12,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:14:12,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:12,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:12,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:12,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:12,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:14:12,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 12:14:12,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:12,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:14:12,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:14:12,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568706286] [2020-10-28 12:14:12,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:14:12,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:14:12,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852642136] [2020-10-28 12:14:12,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:12,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:12,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:12,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:12,796 INFO L87 Difference]: Start difference. First operand 9450 states and 12944 transitions. Second operand 7 states. [2020-10-28 12:14:28,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:28,553 INFO L93 Difference]: Finished difference Result 28711 states and 40552 transitions. [2020-10-28 12:14:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:14:28,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-28 12:14:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:28,645 INFO L225 Difference]: With dead ends: 28711 [2020-10-28 12:14:28,645 INFO L226 Difference]: Without dead ends: 19267 [2020-10-28 12:14:28,674 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 12:14:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19267 states. [2020-10-28 12:14:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19267 to 16856. [2020-10-28 12:14:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16856 states. [2020-10-28 12:14:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16856 states to 16856 states and 22191 transitions. [2020-10-28 12:14:29,176 INFO L78 Accepts]: Start accepts. Automaton has 16856 states and 22191 transitions. Word has length 182 [2020-10-28 12:14:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:29,176 INFO L481 AbstractCegarLoop]: Abstraction has 16856 states and 22191 transitions. [2020-10-28 12:14:29,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:29,177 INFO L276 IsEmpty]: Start isEmpty. Operand 16856 states and 22191 transitions. [2020-10-28 12:14:29,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-28 12:14:29,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:29,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:14:29,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:14:29,181 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:29,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:29,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1002509261, now seen corresponding path program 1 times [2020-10-28 12:14:29,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:29,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94321188] [2020-10-28 12:14:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:31,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:31,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-28 12:14:31,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2261 [2020-10-28 12:14:31,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:31,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:31,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:14:31,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:14:31,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:14:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:31,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:31,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:31,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:31,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:31,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:14:31,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:31,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:31,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:31,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:31,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:32,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:32,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:14:32,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-28 12:14:32,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:14:32,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94321188] [2020-10-28 12:14:32,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:14:32,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:14:32,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463818833] [2020-10-28 12:14:32,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:14:32,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:32,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:14:32,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:14:32,555 INFO L87 Difference]: Start difference. First operand 16856 states and 22191 transitions. Second operand 8 states. [2020-10-28 12:14:51,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:51,988 INFO L93 Difference]: Finished difference Result 40669 states and 53057 transitions. [2020-10-28 12:14:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 12:14:51,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-28 12:14:51,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:52,063 INFO L225 Difference]: With dead ends: 40669 [2020-10-28 12:14:52,064 INFO L226 Difference]: Without dead ends: 23819 [2020-10-28 12:14:52,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-28 12:14:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23819 states. [2020-10-28 12:14:52,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23819 to 22851. [2020-10-28 12:14:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22851 states. [2020-10-28 12:14:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22851 states to 22851 states and 29481 transitions. [2020-10-28 12:14:52,776 INFO L78 Accepts]: Start accepts. Automaton has 22851 states and 29481 transitions. Word has length 217 [2020-10-28 12:14:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:52,776 INFO L481 AbstractCegarLoop]: Abstraction has 22851 states and 29481 transitions. [2020-10-28 12:14:52,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:14:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 22851 states and 29481 transitions. [2020-10-28 12:14:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-28 12:14:52,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:52,783 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:14:52,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:14:52,783 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:52,784 INFO L82 PathProgramCache]: Analyzing trace with hash 814643342, now seen corresponding path program 1 times [2020-10-28 12:14:52,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:52,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823776833] [2020-10-28 12:14:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:52,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:53,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:54,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:54,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-28 12:14:54,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:14:54,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1259 [2020-10-28 12:14:54,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:54,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:14:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-28 12:14:54,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:54,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:54,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:14:54,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:54,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:54,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:54,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:14:54,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:54,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 12:14:54,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:54,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:14:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:14:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:54,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:54,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:14:54,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-28 12:14:54,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:54,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:14:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:14:55,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823776833] [2020-10-28 12:14:55,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:55,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:14:55,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493128872] [2020-10-28 12:14:55,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:55,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:55,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:55,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:55,186 INFO L87 Difference]: Start difference. First operand 22851 states and 29481 transitions. Second operand 7 states. [2020-10-28 12:15:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:11,734 INFO L93 Difference]: Finished difference Result 55293 states and 70953 transitions. [2020-10-28 12:15:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:15:11,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-10-28 12:15:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:11,854 INFO L225 Difference]: With dead ends: 55293 [2020-10-28 12:15:11,855 INFO L226 Difference]: Without dead ends: 29995 [2020-10-28 12:15:11,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:15:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29995 states. [2020-10-28 12:15:12,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29995 to 28321. [2020-10-28 12:15:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28321 states. [2020-10-28 12:15:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28321 states to 28321 states and 34975 transitions. [2020-10-28 12:15:12,733 INFO L78 Accepts]: Start accepts. Automaton has 28321 states and 34975 transitions. Word has length 292 [2020-10-28 12:15:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:12,734 INFO L481 AbstractCegarLoop]: Abstraction has 28321 states and 34975 transitions. [2020-10-28 12:15:12,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:15:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 28321 states and 34975 transitions. [2020-10-28 12:15:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-28 12:15:12,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:12,739 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:15:12,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:15:12,740 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:12,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:12,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1279519028, now seen corresponding path program 1 times [2020-10-28 12:15:12,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:12,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565262269] [2020-10-28 12:15:12,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:14,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 12:15:14,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:15:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-28 12:15:14,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:14,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:15:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:15:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 12:15:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:14,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:14,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:14,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:14,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:14,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:14,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:15:14,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:14,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:14,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:14,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:14,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:14,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:14,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:14,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:14,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:14,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:15:14,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:14,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 12:15:14,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:14,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:15:14,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:15:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:15,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:15:15,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:15:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 12:15:15,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:15,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:15:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 145 proven. 61 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:15:15,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565262269] [2020-10-28 12:15:15,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:15,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:15:15,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643150834] [2020-10-28 12:15:15,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:15:15,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:15,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:15:15,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:15:15,496 INFO L87 Difference]: Start difference. First operand 28321 states and 34975 transitions. Second operand 8 states. [2020-10-28 12:15:41,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:41,313 INFO L93 Difference]: Finished difference Result 102895 states and 134341 transitions. [2020-10-28 12:15:41,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:15:41,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 303 [2020-10-28 12:15:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:41,585 INFO L225 Difference]: With dead ends: 102895 [2020-10-28 12:15:41,585 INFO L226 Difference]: Without dead ends: 73010 [2020-10-28 12:15:41,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:15:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73010 states. [2020-10-28 12:15:43,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73010 to 66790. [2020-10-28 12:15:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66790 states. [2020-10-28 12:15:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66790 states to 66790 states and 87497 transitions. [2020-10-28 12:15:44,187 INFO L78 Accepts]: Start accepts. Automaton has 66790 states and 87497 transitions. Word has length 303 [2020-10-28 12:15:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:44,192 INFO L481 AbstractCegarLoop]: Abstraction has 66790 states and 87497 transitions. [2020-10-28 12:15:44,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:15:44,192 INFO L276 IsEmpty]: Start isEmpty. Operand 66790 states and 87497 transitions. [2020-10-28 12:15:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-28 12:15:44,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:44,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:15:44,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:15:44,199 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:44,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:44,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1650980396, now seen corresponding path program 1 times [2020-10-28 12:15:44,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:44,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430890027] [2020-10-28 12:15:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:44,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:46,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:46,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-28 12:15:46,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:15:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2472 [2020-10-28 12:15:46,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:46,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:15:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:15:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 12:15:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:46,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:46,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:46,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:46,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:15:46,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:46,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:46,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:46,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:46,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:46,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:46,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:47,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:47,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:47,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:15:47,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:47,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:15:47,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:47,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:47,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:15:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:47,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:15:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:47,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:47,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:15:47,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:15:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 12:15:47,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:47,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:15:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 145 proven. 61 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:15:47,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430890027] [2020-10-28 12:15:47,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:47,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:15:47,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125905188] [2020-10-28 12:15:47,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:15:47,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:47,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:15:47,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:15:47,587 INFO L87 Difference]: Start difference. First operand 66790 states and 87497 transitions. Second operand 6 states. [2020-10-28 12:16:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:07,615 INFO L93 Difference]: Finished difference Result 161927 states and 220752 transitions. [2020-10-28 12:16:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:16:07,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 307 [2020-10-28 12:16:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:08,248 INFO L225 Difference]: With dead ends: 161927 [2020-10-28 12:16:08,248 INFO L226 Difference]: Without dead ends: 94374 [2020-10-28 12:16:08,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:16:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94374 states. [2020-10-28 12:16:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94374 to 93537. [2020-10-28 12:16:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93537 states. [2020-10-28 12:16:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93537 states to 93537 states and 121340 transitions. [2020-10-28 12:16:11,458 INFO L78 Accepts]: Start accepts. Automaton has 93537 states and 121340 transitions. Word has length 307 [2020-10-28 12:16:11,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:11,459 INFO L481 AbstractCegarLoop]: Abstraction has 93537 states and 121340 transitions. [2020-10-28 12:16:11,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:16:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 93537 states and 121340 transitions. [2020-10-28 12:16:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-28 12:16:11,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:11,474 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:16:11,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:16:11,474 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:11,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:11,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1896858735, now seen corresponding path program 1 times [2020-10-28 12:16:11,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:11,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919105153] [2020-10-28 12:16:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:11,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:13,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:13,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-28 12:16:13,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:16:13,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-10-28 12:16:13,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:13,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-28 12:16:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 12:16:13,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:13,752 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:16:13,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:16:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:13,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:13,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:13,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:16:13,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:13,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:16:13,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:13,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:13,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:16:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:13,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:13,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:16:13,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:13,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:16:13,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:13,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:13,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:13,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:13,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:13,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:16:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:16:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:14,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:14,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:16:14,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:16:14,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:14,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:16:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:14,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-28 12:16:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:14,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:14,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:14,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 12:16:14,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:14,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 12:16:14,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:14,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:16:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:16:14,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-28 12:16:14,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919105153] [2020-10-28 12:16:14,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:16:14,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:16:14,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963385166] [2020-10-28 12:16:14,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:16:14,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:16:14,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:16:14,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:16:14,535 INFO L87 Difference]: Start difference. First operand 93537 states and 121340 transitions. Second operand 7 states. [2020-10-28 12:16:30,341 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:16:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:36,658 INFO L93 Difference]: Finished difference Result 222641 states and 298455 transitions. [2020-10-28 12:16:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:16:36,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 432 [2020-10-28 12:16:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:37,234 INFO L225 Difference]: With dead ends: 222641 [2020-10-28 12:16:37,234 INFO L226 Difference]: Without dead ends: 129110 [2020-10-28 12:16:37,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:16:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129110 states. [2020-10-28 12:16:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129110 to 128281. [2020-10-28 12:16:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128281 states. [2020-10-28 12:16:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128281 states to 128281 states and 167447 transitions. [2020-10-28 12:16:40,521 INFO L78 Accepts]: Start accepts. Automaton has 128281 states and 167447 transitions. Word has length 432 [2020-10-28 12:16:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:40,522 INFO L481 AbstractCegarLoop]: Abstraction has 128281 states and 167447 transitions. [2020-10-28 12:16:40,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:16:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 128281 states and 167447 transitions. [2020-10-28 12:16:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-28 12:16:40,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:40,533 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 12:16:40,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:16:40,534 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:40,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1495563785, now seen corresponding path program 1 times [2020-10-28 12:16:40,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:40,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958336828] [2020-10-28 12:16:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:40,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:42,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:42,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-28 12:16:42,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-28 12:16:42,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:42,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:16:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 12:16:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:42,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:16:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:42,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:16:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:16:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:42,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:16:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:42,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:42,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:42,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:16:42,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:42,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:16:42,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:42,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:42,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:42,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:16:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:42,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:42,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:16:42,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:42,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 12:16:42,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:42,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:16:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:42,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-28 12:16:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:42,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:42,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:42,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 12:16:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 12:16:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:42,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:16:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:16:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-28 12:16:43,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958336828] [2020-10-28 12:16:43,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:16:43,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:16:43,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794544719] [2020-10-28 12:16:43,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:16:43,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:16:43,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:16:43,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:16:43,071 INFO L87 Difference]: Start difference. First operand 128281 states and 167447 transitions. Second operand 7 states. [2020-10-28 12:16:43,241 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66