/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:21:50,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:21:50,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:21:50,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:21:50,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:21:50,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:21:50,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:21:50,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:21:50,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:21:50,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:21:50,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:21:50,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:21:50,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:21:50,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:21:50,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:21:50,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:21:50,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:21:50,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:21:50,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:21:50,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:21:50,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:21:50,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:21:50,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:21:50,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:21:50,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:21:50,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:21:50,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:21:50,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:21:50,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:21:50,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:21:50,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:21:50,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:21:50,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:21:50,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:21:50,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:21:50,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:21:50,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:21:50,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:21:50,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:21:50,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:21:50,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:21:50,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:21:50,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:21:50,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:21:50,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:21:50,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:21:50,492 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:21:50,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:21:50,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:21:50,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:21:50,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:21:50,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:21:50,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:21:50,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:21:50,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:21:50,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:21:50,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:21:50,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:21:50,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:21:50,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:21:50,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:21:50,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:21:50,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:21:50,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:21:50,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:21:50,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:21:50,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:21:50,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:21:50,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:21:50,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:21:50,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:21:50,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:21:50,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:21:50,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:21:50,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:21:50,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:21:50,963 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:21:50,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47.c [2020-10-29 07:21:51,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0a838add/557e64c17a4e4b1da6b2a54c255f903b/FLAG18f5fa194 [2020-10-29 07:21:52,118 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:21:52,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label47.c [2020-10-29 07:21:52,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0a838add/557e64c17a4e4b1da6b2a54c255f903b/FLAG18f5fa194 [2020-10-29 07:21:52,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0a838add/557e64c17a4e4b1da6b2a54c255f903b [2020-10-29 07:21:52,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:21:52,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:21:52,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:21:52,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:21:52,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:21:52,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:21:52" (1/1) ... [2020-10-29 07:21:52,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c206df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:52, skipping insertion in model container [2020-10-29 07:21:52,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:21:52" (1/1) ... [2020-10-29 07:21:52,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:21:52,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:21:54,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:21:54,460 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:21:55,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:21:55,201 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:21:55,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55 WrapperNode [2020-10-29 07:21:55,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:21:55,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:21:55,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:21:55,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:21:55,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55" (1/1) ... [2020-10-29 07:21:55,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55" (1/1) ... [2020-10-29 07:21:55,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55" (1/1) ... [2020-10-29 07:21:55,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55" (1/1) ... [2020-10-29 07:21:55,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55" (1/1) ... [2020-10-29 07:21:55,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55" (1/1) ... [2020-10-29 07:21:55,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55" (1/1) ... [2020-10-29 07:21:55,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:21:55,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:21:55,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:21:55,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:21:55,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:21:55,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:21:55,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:21:55,799 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:21:55,799 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:21:55,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:21:55,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:21:55,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:21:55,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:21:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:21:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:21:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:21:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:21:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:21:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:21:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:21:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:21:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:21:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:21:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:21:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:21:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:21:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:21:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:21:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:21:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:22:08,346 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:22:08,347 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:22:08,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:22:08 BoogieIcfgContainer [2020-10-29 07:22:08,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:22:08,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:22:08,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:22:08,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:22:08,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:21:52" (1/3) ... [2020-10-29 07:22:08,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53729a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:22:08, skipping insertion in model container [2020-10-29 07:22:08,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:55" (2/3) ... [2020-10-29 07:22:08,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53729a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:22:08, skipping insertion in model container [2020-10-29 07:22:08,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:22:08" (3/3) ... [2020-10-29 07:22:08,369 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label47.c [2020-10-29 07:22:08,384 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:22:08,392 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:22:08,409 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:22:08,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:22:08,464 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:22:08,464 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:22:08,464 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:22:08,464 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:22:08,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:22:08,465 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:22:08,465 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:22:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:22:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 07:22:08,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:08,532 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] [2020-10-29 07:22:08,532 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:08,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1484263914, now seen corresponding path program 1 times [2020-10-29 07:22:08,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:08,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157565788] [2020-10-29 07:22:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:09,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:09,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 07:22:09,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-29 07:22:09,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:09,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:22:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:22:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 07:22:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:22:09,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:09,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:09,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:09,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:09,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:22:09,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:09,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:22:09,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:09,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157565788] [2020-10-29 07:22:09,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:22:09,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:22:09,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211805837] [2020-10-29 07:22:09,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:22:09,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:09,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:22:09,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:22:09,680 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:22:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:22:30,459 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-29 07:22:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:22:30,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-29 07:22:30,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:22:30,514 INFO L225 Difference]: With dead ends: 3235 [2020-10-29 07:22:30,514 INFO L226 Difference]: Without dead ends: 2027 [2020-10-29 07:22:30,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:22:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-29 07:22:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-29 07:22:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-29 07:22:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-29 07:22:30,754 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 50 [2020-10-29 07:22:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:22:30,757 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-29 07:22:30,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:22:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-29 07:22:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 07:22:30,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:30,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:22:30,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:22:30,778 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:30,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:30,779 INFO L82 PathProgramCache]: Analyzing trace with hash -322601054, now seen corresponding path program 1 times [2020-10-29 07:22:30,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:30,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942615687] [2020-10-29 07:22:30,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:31,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:32,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:33,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:33,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 07:22:33,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:22:33,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2678 [2020-10-29 07:22:33,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:33,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:22:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:22:33,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:22:33,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:22:33,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:33,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:33,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:33,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:22:33,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:33,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:22:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:22:33,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:22:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:33,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:33,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:22:33,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 07:22:33,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:34,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:22:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:22:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:34,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942615687] [2020-10-29 07:22:34,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:22:34,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:22:34,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417653655] [2020-10-29 07:22:34,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:22:34,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:34,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:22:34,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:22:34,125 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-29 07:23:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:04,973 INFO L93 Difference]: Finished difference Result 5868 states and 9705 transitions. [2020-10-29 07:23:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:23:04,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-29 07:23:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:05,013 INFO L225 Difference]: With dead ends: 5868 [2020-10-29 07:23:05,014 INFO L226 Difference]: Without dead ends: 3864 [2020-10-29 07:23:05,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:23:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2020-10-29 07:23:05,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3762. [2020-10-29 07:23:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3762 states. [2020-10-29 07:23:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5633 transitions. [2020-10-29 07:23:05,219 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5633 transitions. Word has length 125 [2020-10-29 07:23:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:05,223 INFO L481 AbstractCegarLoop]: Abstraction has 3762 states and 5633 transitions. [2020-10-29 07:23:05,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:23:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5633 transitions. [2020-10-29 07:23:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 07:23:05,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:05,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:23:05,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:23:05,231 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:05,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1320299878, now seen corresponding path program 1 times [2020-10-29 07:23:05,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:05,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146422021] [2020-10-29 07:23:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:06,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:06,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 07:23:06,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:23:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-29 07:23:06,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:06,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:23:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:23:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:23:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:06,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:06,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:06,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:06,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:23:06,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:06,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:06,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:06,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:23:06,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:06,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:06,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:06,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:06,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:23:06,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 07:23:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:06,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:06,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:23:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:23:06,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146422021] [2020-10-29 07:23:06,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:23:06,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:23:06,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437529213] [2020-10-29 07:23:06,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:23:06,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:06,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:23:06,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:23:06,886 INFO L87 Difference]: Start difference. First operand 3762 states and 5633 transitions. Second operand 7 states. [2020-10-29 07:23:07,064 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:23:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:36,414 INFO L93 Difference]: Finished difference Result 11276 states and 17309 transitions. [2020-10-29 07:23:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:23:36,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-29 07:23:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:36,469 INFO L225 Difference]: With dead ends: 11276 [2020-10-29 07:23:36,469 INFO L226 Difference]: Without dead ends: 7520 [2020-10-29 07:23:36,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:23:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2020-10-29 07:23:36,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7322. [2020-10-29 07:23:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2020-10-29 07:23:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 9913 transitions. [2020-10-29 07:23:36,823 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 9913 transitions. Word has length 139 [2020-10-29 07:23:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:36,826 INFO L481 AbstractCegarLoop]: Abstraction has 7322 states and 9913 transitions. [2020-10-29 07:23:36,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:23:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 9913 transitions. [2020-10-29 07:23:36,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 07:23:36,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:36,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:23:36,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:23:36,831 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:36,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1590990590, now seen corresponding path program 1 times [2020-10-29 07:23:36,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:36,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967921201] [2020-10-29 07:23:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:38,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:38,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:23:38,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:23:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-29 07:23:38,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:38,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:23:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:23:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:23:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:38,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:38,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:38,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:38,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:23:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:38,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:23:38,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:38,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:39,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:39,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:23:39,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 07:23:39,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:39,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:23:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:23:39,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967921201] [2020-10-29 07:23:39,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:23:39,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:23:39,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446937718] [2020-10-29 07:23:39,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:23:39,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:39,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:23:39,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:23:39,427 INFO L87 Difference]: Start difference. First operand 7322 states and 9913 transitions. Second operand 7 states. [2020-10-29 07:24:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:24:04,868 INFO L93 Difference]: Finished difference Result 21843 states and 30599 transitions. [2020-10-29 07:24:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:24:04,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2020-10-29 07:24:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:24:04,963 INFO L225 Difference]: With dead ends: 21843 [2020-10-29 07:24:04,963 INFO L226 Difference]: Without dead ends: 14527 [2020-10-29 07:24:04,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:24:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14527 states. [2020-10-29 07:24:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14527 to 14402. [2020-10-29 07:24:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14402 states. [2020-10-29 07:24:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14402 states to 14402 states and 18514 transitions. [2020-10-29 07:24:05,521 INFO L78 Accepts]: Start accepts. Automaton has 14402 states and 18514 transitions. Word has length 168 [2020-10-29 07:24:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:24:05,524 INFO L481 AbstractCegarLoop]: Abstraction has 14402 states and 18514 transitions. [2020-10-29 07:24:05,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:24:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 14402 states and 18514 transitions. [2020-10-29 07:24:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-29 07:24:05,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:24:05,532 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:24:05,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:24:05,532 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:24:05,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:24:05,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1084479442, now seen corresponding path program 1 times [2020-10-29 07:24:05,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:24:05,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666092950] [2020-10-29 07:24:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:24:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:05,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:10,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:10,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-29 07:24:10,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:24:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 07:24:10,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:10,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:24:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:24:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:10,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:10,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:10,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:10,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:10,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:24:10,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:10,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:24:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:24:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:10,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:10,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:11,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:11,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:24:11,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:24:11,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:11,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:24:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:11,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:24:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:11,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:11,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:24:11,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:11,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-29 07:24:11,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:11,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:11,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:11,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:11,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:24:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:24:11,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666092950] [2020-10-29 07:24:11,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:24:11,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:24:11,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437555527] [2020-10-29 07:24:11,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:24:11,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:11,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:24:11,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:24:11,551 INFO L87 Difference]: Start difference. First operand 14402 states and 18514 transitions. Second operand 7 states. [2020-10-29 07:24:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:24:42,515 INFO L93 Difference]: Finished difference Result 42788 states and 57196 transitions. [2020-10-29 07:24:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:24:42,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-29 07:24:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:24:42,633 INFO L225 Difference]: With dead ends: 42788 [2020-10-29 07:24:42,634 INFO L226 Difference]: Without dead ends: 28392 [2020-10-29 07:24:42,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:24:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28392 states. [2020-10-29 07:24:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28392 to 28152. [2020-10-29 07:24:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28152 states. [2020-10-29 07:24:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28152 states to 28152 states and 37693 transitions. [2020-10-29 07:24:43,574 INFO L78 Accepts]: Start accepts. Automaton has 28152 states and 37693 transitions. Word has length 250 [2020-10-29 07:24:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:24:43,575 INFO L481 AbstractCegarLoop]: Abstraction has 28152 states and 37693 transitions. [2020-10-29 07:24:43,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:24:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 28152 states and 37693 transitions. [2020-10-29 07:24:43,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-29 07:24:43,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:24:43,588 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:24:43,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:24:43,589 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:24:43,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:24:43,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1588613726, now seen corresponding path program 1 times [2020-10-29 07:24:43,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:24:43,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676745493] [2020-10-29 07:24:43,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:24:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:44,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:46,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:48,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-29 07:24:48,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:24:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4845 [2020-10-29 07:24:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:48,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-29 07:24:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 07:24:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:48,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:48,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:48,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:48,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:24:48,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:48,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:24:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:24:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:48,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:48,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:24:48,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:24:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 07:24:48,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:48,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:24:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-29 07:24:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:49,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:49,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:49,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 07:24:49,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 07:24:49,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:49,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 07:24:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:24:49,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676745493] [2020-10-29 07:24:49,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:24:49,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:24:49,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163590169] [2020-10-29 07:24:49,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:24:49,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:49,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:24:49,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:24:49,748 INFO L87 Difference]: Start difference. First operand 28152 states and 37693 transitions. Second operand 7 states. [2020-10-29 07:24:52,725 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 07:25:21,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:25:21,881 INFO L93 Difference]: Finished difference Result 62946 states and 87459 transitions. [2020-10-29 07:25:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:25:21,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-29 07:25:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:25:22,032 INFO L225 Difference]: With dead ends: 62946 [2020-10-29 07:25:22,032 INFO L226 Difference]: Without dead ends: 34800 [2020-10-29 07:25:22,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:25:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34800 states. [2020-10-29 07:25:23,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34800 to 33529. [2020-10-29 07:25:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33529 states. [2020-10-29 07:25:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33529 states to 33529 states and 44186 transitions. [2020-10-29 07:25:23,431 INFO L78 Accepts]: Start accepts. Automaton has 33529 states and 44186 transitions. Word has length 311 [2020-10-29 07:25:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:25:23,432 INFO L481 AbstractCegarLoop]: Abstraction has 33529 states and 44186 transitions. [2020-10-29 07:25:23,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:25:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 33529 states and 44186 transitions. [2020-10-29 07:25:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-29 07:25:23,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:23,446 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:25:23,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:25:23,446 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:23,447 INFO L82 PathProgramCache]: Analyzing trace with hash -849438461, now seen corresponding path program 1 times [2020-10-29 07:25:23,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:23,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389873405] [2020-10-29 07:25:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:27,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:28,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:28,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-29 07:25:28,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:25:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 07:25:28,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:28,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:25:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:25:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-29 07:25:28,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:28,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:28,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:28,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:28,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:25:28,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:28,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:25:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:25:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:25:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:25:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:29,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:29,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:25:29,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:29,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 07:25:29,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:29,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:25:29,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:29,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:25:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:29,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:29,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:25:29,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:25:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-29 07:25:29,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:29,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:25:29,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-29 07:25:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:29,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:29,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 07:25:29,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 07:25:29,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:29,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:25:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:25:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 07:25:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 290 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:25:29,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389873405] [2020-10-29 07:25:29,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:25:29,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:25:29,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813901701] [2020-10-29 07:25:29,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:25:29,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:25:29,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:25:29,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:25:29,934 INFO L87 Difference]: Start difference. First operand 33529 states and 44186 transitions. Second operand 7 states.