/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=SHALLOWEST --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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:51:30,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:51:30,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:51:30,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:51:30,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:51:30,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:51:30,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:51:30,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:51:30,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:51:30,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:51:30,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:51:30,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:51:30,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:51:30,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:51:30,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:51:30,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:51:30,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:51:30,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:51:30,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:51:30,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:51:30,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:51:30,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:51:30,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:51:30,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:51:30,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:51:30,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:51:30,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:51:30,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:51:30,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:51:30,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:51:30,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:51:30,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:51:30,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:51:30,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:51:30,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:51:30,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:51:30,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:51:30,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:51:30,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:51:30,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:51:30,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:51:30,334 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 [2020-10-26 22:51:30,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:51:30,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:51:30,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:51:30,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:51:30,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:51:30,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:51:30,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:51:30,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:51:30,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:51:30,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:51:30,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:51:30,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:51:30,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:51:30,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:51:30,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:51:30,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:51:30,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:51:30,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:51:30,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:51:30,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:51:30,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:51:30,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:51:30,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:51:30,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:51:30,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:51:30,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:51:30,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:51:30,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:51:30,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:51:30,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:51:30,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:51:30,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:51:30,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:51:30,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:51:30,918 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:51:30,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label20.c [2020-10-26 22:51:31,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db706a332/724feab0cbd94857a12641754ec5d20e/FLAG6eb535682 [2020-10-26 22:51:32,162 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:51:32,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label20.c [2020-10-26 22:51:32,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db706a332/724feab0cbd94857a12641754ec5d20e/FLAG6eb535682 [2020-10-26 22:51:32,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db706a332/724feab0cbd94857a12641754ec5d20e [2020-10-26 22:51:32,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:51:32,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:51:32,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:51:32,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:51:32,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:51:32,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:51:32" (1/1) ... [2020-10-26 22:51:32,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8cdb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:32, skipping insertion in model container [2020-10-26 22:51:32,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:51:32" (1/1) ... [2020-10-26 22:51:32,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:51:32,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:51:34,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:51:34,429 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:51:35,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:51:35,231 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:51:35,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35 WrapperNode [2020-10-26 22:51:35,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:51:35,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:51:35,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:51:35,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:51:35,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35" (1/1) ... [2020-10-26 22:51:35,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35" (1/1) ... [2020-10-26 22:51:35,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35" (1/1) ... [2020-10-26 22:51:35,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35" (1/1) ... [2020-10-26 22:51:35,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35" (1/1) ... [2020-10-26 22:51:35,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35" (1/1) ... [2020-10-26 22:51:35,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35" (1/1) ... [2020-10-26 22:51:35,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:51:35,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:51:35,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:51:35,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:51:35,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35" (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 [2020-10-26 22:51:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:51:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:51:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:51:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:51:35,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:51:35,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:51:35,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:51:35,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:51:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:51:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:51:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:51:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:51:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:51:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:51:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:51:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:51:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:51:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:51:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:51:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:51:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:51:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:51:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:51:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:51:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:51:40,939 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:51:40,940 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:51:40,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:51:40 BoogieIcfgContainer [2020-10-26 22:51:40,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:51:40,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:51:40,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:51:40,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:51:40,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:51:32" (1/3) ... [2020-10-26 22:51:40,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad04f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:51:40, skipping insertion in model container [2020-10-26 22:51:40,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:35" (2/3) ... [2020-10-26 22:51:40,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad04f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:51:40, skipping insertion in model container [2020-10-26 22:51:40,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:51:40" (3/3) ... [2020-10-26 22:51:40,970 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label20.c [2020-10-26 22:51:40,989 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:51:41,009 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:51:41,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:51:41,101 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:51:41,102 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:51:41,102 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:51:41,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:51:41,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:51:41,102 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:51:41,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:51:41,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:51:41,160 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:51:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 22:51:41,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:51:41,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:51:41,172 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:51:41,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:51:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1921821756, now seen corresponding path program 1 times [2020-10-26 22:51:41,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:51:41,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057607058] [2020-10-26 22:51:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:51:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:41,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:41,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:41,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 22:51:41,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:41,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-26 22:51:41,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:51:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:51:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 22:51:42,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:51:42,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:51:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:42,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:42,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:51:42,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 22:51:42,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:51:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:51:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:51:42,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057607058] [2020-10-26 22:51:42,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:51:42,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:51:42,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909223798] [2020-10-26 22:51:42,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:51:42,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:51:42,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:51:42,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:51:42,290 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:51:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:51:52,431 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-26 22:51:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:51:52,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-26 22:51:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:51:52,470 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:51:52,471 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:51:52,488 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 [2020-10-26 22:51:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:51:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-26 22:51:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-26 22:51:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-26 22:51:52,685 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 19 [2020-10-26 22:51:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:51:52,687 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-26 22:51:52,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:51:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-26 22:51:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-26 22:51:52,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:51:52,695 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 22:51:52,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:51:52,695 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:51:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:51:52,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1044444113, now seen corresponding path program 1 times [2020-10-26 22:51:52,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:51:52,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334847724] [2020-10-26 22:51:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:51:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:52,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:53,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:53,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:53,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 22:51:53,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:51:53,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-26 22:51:53,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:51:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:51:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 22:51:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:51:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:51:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:54,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:54,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:54,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:51:54,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 22:51:54,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:51:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:51:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 22:51:54,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:51:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:54,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:54,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:51:54,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:51:54,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 22:51:54,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:51:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:51:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:51:54,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:51:54,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334847724] [2020-10-26 22:51:54,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:51:54,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:51:54,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834810186] [2020-10-26 22:51:54,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:51:54,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:51:54,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:51:54,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:51:54,546 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-26 22:52:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:06,554 INFO L93 Difference]: Finished difference Result 4716 states and 8356 transitions. [2020-10-26 22:52:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:52:06,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-26 22:52:06,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:06,577 INFO L225 Difference]: With dead ends: 4716 [2020-10-26 22:52:06,578 INFO L226 Difference]: Without dead ends: 3168 [2020-10-26 22:52:06,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:52:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2020-10-26 22:52:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 3115. [2020-10-26 22:52:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3115 states. [2020-10-26 22:52:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 5329 transitions. [2020-10-26 22:52:06,703 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 5329 transitions. Word has length 88 [2020-10-26 22:52:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:06,704 INFO L481 AbstractCegarLoop]: Abstraction has 3115 states and 5329 transitions. [2020-10-26 22:52:06,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:52:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 5329 transitions. [2020-10-26 22:52:06,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-26 22:52:06,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:06,717 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 22:52:06,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:52:06,718 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:06,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:06,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1909801181, now seen corresponding path program 1 times [2020-10-26 22:52:06,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:06,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976939565] [2020-10-26 22:52:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:06,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:07,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:07,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-26 22:52:07,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-10-26 22:52:07,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:52:07,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:07,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:52:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:07,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:07,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:07,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:52:07,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:07,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:07,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:52:07,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 22:52:07,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:52:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:52:07,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976939565] [2020-10-26 22:52:07,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:52:07,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:52:07,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799016945] [2020-10-26 22:52:07,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:52:07,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:07,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:52:07,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:52:07,928 INFO L87 Difference]: Start difference. First operand 3115 states and 5329 transitions. Second operand 6 states. [2020-10-26 22:52:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:20,703 INFO L93 Difference]: Finished difference Result 9409 states and 16273 transitions. [2020-10-26 22:52:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:52:20,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-26 22:52:20,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:20,754 INFO L225 Difference]: With dead ends: 9409 [2020-10-26 22:52:20,755 INFO L226 Difference]: Without dead ends: 6300 [2020-10-26 22:52:20,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:52:20,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6300 states. [2020-10-26 22:52:21,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6300 to 6269. [2020-10-26 22:52:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6269 states. [2020-10-26 22:52:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 9337 transitions. [2020-10-26 22:52:21,028 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 9337 transitions. Word has length 94 [2020-10-26 22:52:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:21,029 INFO L481 AbstractCegarLoop]: Abstraction has 6269 states and 9337 transitions. [2020-10-26 22:52:21,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:52:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 9337 transitions. [2020-10-26 22:52:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 22:52:21,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:21,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 22:52:21,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:52:21,032 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:21,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:21,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1950700559, now seen corresponding path program 1 times [2020-10-26 22:52:21,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:21,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968869750] [2020-10-26 22:52:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:21,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:21,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 22:52:21,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:21,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-26 22:52:21,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:52:21,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:21,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 22:52:21,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:21,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:21,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:21,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:21,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:21,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:52:21,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:22,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:22,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:22,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:52:22,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 22:52:22,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:52:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:52:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:52:22,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968869750] [2020-10-26 22:52:22,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:52:22,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:52:22,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948373897] [2020-10-26 22:52:22,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:52:22,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:22,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:52:22,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:22,323 INFO L87 Difference]: Start difference. First operand 6269 states and 9337 transitions. Second operand 7 states. [2020-10-26 22:52:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:37,458 INFO L93 Difference]: Finished difference Result 18337 states and 28243 transitions. [2020-10-26 22:52:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:52:37,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-26 22:52:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:37,546 INFO L225 Difference]: With dead ends: 18337 [2020-10-26 22:52:37,547 INFO L226 Difference]: Without dead ends: 12074 [2020-10-26 22:52:37,569 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 [2020-10-26 22:52:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12074 states. [2020-10-26 22:52:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12074 to 11153. [2020-10-26 22:52:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11153 states. [2020-10-26 22:52:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11153 states to 11153 states and 16105 transitions. [2020-10-26 22:52:37,961 INFO L78 Accepts]: Start accepts. Automaton has 11153 states and 16105 transitions. Word has length 104 [2020-10-26 22:52:37,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:37,963 INFO L481 AbstractCegarLoop]: Abstraction has 11153 states and 16105 transitions. [2020-10-26 22:52:37,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:52:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 11153 states and 16105 transitions. [2020-10-26 22:52:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-26 22:52:37,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:37,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:52:37,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:52:37,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:37,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:37,973 INFO L82 PathProgramCache]: Analyzing trace with hash -462936123, now seen corresponding path program 1 times [2020-10-26 22:52:37,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:37,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872588620] [2020-10-26 22:52:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:39,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:39,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:52:39,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:39,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-26 22:52:39,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:52:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 22:52:39,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:39,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:39,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:39,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:39,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 22:52:39,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:39,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:39,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:39,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 22:52:39,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-26 22:52:39,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 22:52:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:52:39,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872588620] [2020-10-26 22:52:39,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:52:39,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:52:39,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145680625] [2020-10-26 22:52:39,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:52:39,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:39,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:52:39,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:39,628 INFO L87 Difference]: Start difference. First operand 11153 states and 16105 transitions. Second operand 7 states. [2020-10-26 22:52:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:55,009 INFO L93 Difference]: Finished difference Result 22650 states and 34025 transitions. [2020-10-26 22:52:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:52:55,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-26 22:52:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:55,054 INFO L225 Difference]: With dead ends: 22650 [2020-10-26 22:52:55,054 INFO L226 Difference]: Without dead ends: 11503 [2020-10-26 22:52:55,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:52:55,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11503 states. [2020-10-26 22:52:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11503 to 9637. [2020-10-26 22:52:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9637 states. [2020-10-26 22:52:55,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 12454 transitions. [2020-10-26 22:52:55,364 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 12454 transitions. Word has length 119 [2020-10-26 22:52:55,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:55,366 INFO L481 AbstractCegarLoop]: Abstraction has 9637 states and 12454 transitions. [2020-10-26 22:52:55,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:52:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 12454 transitions. [2020-10-26 22:52:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-26 22:52:55,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:55,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:52:55,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:52:55,370 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:55,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:55,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1207053355, now seen corresponding path program 1 times [2020-10-26 22:52:55,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:55,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344367878] [2020-10-26 22:52:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:55,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:57,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:57,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-26 22:52:57,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:57,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-10-26 22:52:57,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:52:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-26 22:52:57,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:57,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:57,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:57,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:57,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 22:52:57,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:57,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:57,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:58,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:58,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-26 22:52:58,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:58,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-26 22:52:58,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:58,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:58,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 22:52:58,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:52:58,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344367878] [2020-10-26 22:52:58,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:52:58,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:52:58,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293817669] [2020-10-26 22:52:58,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:52:58,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:58,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:52:58,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:58,810 INFO L87 Difference]: Start difference. First operand 9637 states and 12454 transitions. Second operand 7 states. [2020-10-26 22:53:13,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:53:13,146 INFO L93 Difference]: Finished difference Result 19534 states and 25445 transitions. [2020-10-26 22:53:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:53:13,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-26 22:53:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:53:13,190 INFO L225 Difference]: With dead ends: 19534 [2020-10-26 22:53:13,190 INFO L226 Difference]: Without dead ends: 10670 [2020-10-26 22:53:13,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:53:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2020-10-26 22:53:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 10412. [2020-10-26 22:53:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10412 states. [2020-10-26 22:53:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10412 states to 10412 states and 13247 transitions. [2020-10-26 22:53:13,558 INFO L78 Accepts]: Start accepts. Automaton has 10412 states and 13247 transitions. Word has length 218 [2020-10-26 22:53:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:53:13,560 INFO L481 AbstractCegarLoop]: Abstraction has 10412 states and 13247 transitions. [2020-10-26 22:53:13,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:53:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 10412 states and 13247 transitions. [2020-10-26 22:53:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-26 22:53:13,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:53:13,566 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:53:13,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:53:13,567 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:53:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:53:13,568 INFO L82 PathProgramCache]: Analyzing trace with hash -99325808, now seen corresponding path program 1 times [2020-10-26 22:53:13,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:53:13,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617137801] [2020-10-26 22:53:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:53:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:14,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:16,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:16,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-26 22:53:16,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:53:16,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2303 [2020-10-26 22:53:16,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:53:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:53:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 22:53:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:16,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:53:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:16,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:16,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:53:16,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:53:16,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:53:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:16,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:16,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:53:16,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:16,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 22:53:16,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:53:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:53:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:16,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:53:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:16,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:16,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:16,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:53:16,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:53:16,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 22:53:16,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:53:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:53:16,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 81 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:53:16,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617137801] [2020-10-26 22:53:16,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:53:16,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:53:16,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137425324] [2020-10-26 22:53:16,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:53:16,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:53:16,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:53:16,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:53:16,868 INFO L87 Difference]: Start difference. First operand 10412 states and 13247 transitions. Second operand 6 states. [2020-10-26 22:53:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:53:33,002 INFO L93 Difference]: Finished difference Result 28386 states and 38365 transitions. [2020-10-26 22:53:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:53:33,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2020-10-26 22:53:33,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:53:33,071 INFO L225 Difference]: With dead ends: 28386 [2020-10-26 22:53:33,072 INFO L226 Difference]: Without dead ends: 19516 [2020-10-26 22:53:33,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:53:33,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19516 states. [2020-10-26 22:53:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19516 to 18592. [2020-10-26 22:53:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18592 states. [2020-10-26 22:53:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18592 states to 18592 states and 24045 transitions. [2020-10-26 22:53:33,596 INFO L78 Accepts]: Start accepts. Automaton has 18592 states and 24045 transitions. Word has length 239 [2020-10-26 22:53:33,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:53:33,597 INFO L481 AbstractCegarLoop]: Abstraction has 18592 states and 24045 transitions. [2020-10-26 22:53:33,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:53:33,597 INFO L276 IsEmpty]: Start isEmpty. Operand 18592 states and 24045 transitions. [2020-10-26 22:53:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-26 22:53:33,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:53:33,606 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:53:33,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:53:33,607 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:53:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:53:33,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1526332097, now seen corresponding path program 1 times [2020-10-26 22:53:33,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:53:33,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136821062] [2020-10-26 22:53:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:53:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:37,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:37,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-26 22:53:37,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:53:37,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3803 [2020-10-26 22:53:37,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:53:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-26 22:53:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:53:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:37,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:37,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:53:37,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:53:37,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:37,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:53:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:37,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:37,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:53:37,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:37,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 22:53:37,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:53:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:53:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:37,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 22:53:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:37,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:38,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:38,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 22:53:38,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:53:38,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-26 22:53:38,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:53:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:53:38,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-26 22:53:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:38,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:38,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:53:38,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:38,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 22:53:38,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-26 22:53:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 109 proven. 96 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-26 22:53:39,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136821062] [2020-10-26 22:53:39,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:53:39,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:53:39,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725252381] [2020-10-26 22:53:39,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:53:39,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:53:39,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:53:39,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:53:39,511 INFO L87 Difference]: Start difference. First operand 18592 states and 24045 transitions. Second operand 6 states. [2020-10-26 22:53:39,964 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 22:53:40,426 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-26 22:53:53,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:53:53,843 INFO L93 Difference]: Finished difference Result 35872 states and 46892 transitions. [2020-10-26 22:53:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:53:53,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2020-10-26 22:53:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:53:53,903 INFO L225 Difference]: With dead ends: 35872 [2020-10-26 22:53:53,904 INFO L226 Difference]: Without dead ends: 17858 [2020-10-26 22:53:53,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:53:53,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17858 states. [2020-10-26 22:53:54,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17858 to 17760. [2020-10-26 22:53:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17760 states. [2020-10-26 22:53:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17760 states to 17760 states and 22257 transitions. [2020-10-26 22:53:54,340 INFO L78 Accepts]: Start accepts. Automaton has 17760 states and 22257 transitions. Word has length 339 [2020-10-26 22:53:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:53:54,341 INFO L481 AbstractCegarLoop]: Abstraction has 17760 states and 22257 transitions. [2020-10-26 22:53:54,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:53:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 17760 states and 22257 transitions. [2020-10-26 22:53:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-26 22:53:54,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:53:54,350 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:53:54,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:53:54,351 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:53:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:53:54,351 INFO L82 PathProgramCache]: Analyzing trace with hash 639651809, now seen corresponding path program 1 times [2020-10-26 22:53:54,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:53:54,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854989434] [2020-10-26 22:53:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:53:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:54,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:56,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:58,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:58,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-26 22:53:58,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:53:58,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4339 [2020-10-26 22:53:58,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:53:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:53:58,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:53:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:58,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:58,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:53:58,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:58,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:53:58,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:58,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:53:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:59,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:59,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:53:59,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:59,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-26 22:53:59,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:53:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:53:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:59,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:53:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:59,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:59,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:53:59,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 22:53:59,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:53:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:53:59,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:59,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-26 22:53:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:59,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:59,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:53:59,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 22:53:59,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-26 22:53:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 123 proven. 88 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-26 22:53:59,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854989434] [2020-10-26 22:53:59,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:53:59,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:53:59,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115290399] [2020-10-26 22:53:59,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:53:59,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:53:59,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:53:59,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:53:59,805 INFO L87 Difference]: Start difference. First operand 17760 states and 22257 transitions. Second operand 7 states. [2020-10-26 22:54:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:54:20,941 INFO L93 Difference]: Finished difference Result 44237 states and 59224 transitions. [2020-10-26 22:54:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:54:20,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-26 22:54:20,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:54:21,050 INFO L225 Difference]: With dead ends: 44237 [2020-10-26 22:54:21,051 INFO L226 Difference]: Without dead ends: 27250 [2020-10-26 22:54:21,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:54:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27250 states. [2020-10-26 22:54:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27250 to 26146. [2020-10-26 22:54:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26146 states. [2020-10-26 22:54:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26146 states to 26146 states and 32897 transitions. [2020-10-26 22:54:21,911 INFO L78 Accepts]: Start accepts. Automaton has 26146 states and 32897 transitions. Word has length 354 [2020-10-26 22:54:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:54:21,912 INFO L481 AbstractCegarLoop]: Abstraction has 26146 states and 32897 transitions. [2020-10-26 22:54:21,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:54:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 26146 states and 32897 transitions. [2020-10-26 22:54:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-26 22:54:21,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:54:21,926 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:54:21,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:54:21,927 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:54:21,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:54:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1876524247, now seen corresponding path program 1 times [2020-10-26 22:54:21,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:54:21,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057620910] [2020-10-26 22:54:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:54:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:24,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:24,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-26 22:54:24,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:54:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-10-26 22:54:24,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-26 22:54:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 22:54:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:24,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:54:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:24,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:54:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:54:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:54:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:54:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:24,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:54:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:24,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:24,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:54:24,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 22:54:24,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:54:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:54:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:54:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:24,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:24,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 22:54:24,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:24,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 22:54:24,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:24,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:54:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 22:54:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:24,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-26 22:54:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:24,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:24,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:54:24,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 22:54:24,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:54:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 22:54:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-26 22:54:25,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057620910] [2020-10-26 22:54:25,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:54:25,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:54:25,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144499965] [2020-10-26 22:54:25,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:54:25,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:54:25,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:54:25,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:54:25,291 INFO L87 Difference]: Start difference. First operand 26146 states and 32897 transitions. Second operand 7 states. [2020-10-26 22:54:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:54:44,806 INFO L93 Difference]: Finished difference Result 61396 states and 80825 transitions. [2020-10-26 22:54:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:54:44,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 382 [2020-10-26 22:54:44,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:54:44,918 INFO L225 Difference]: With dead ends: 61396 [2020-10-26 22:54:44,918 INFO L226 Difference]: Without dead ends: 36023 [2020-10-26 22:54:44,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:54:44,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36023 states. [2020-10-26 22:54:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36023 to 35858. [2020-10-26 22:54:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35858 states. [2020-10-26 22:54:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35858 states to 35858 states and 45001 transitions. [2020-10-26 22:54:45,884 INFO L78 Accepts]: Start accepts. Automaton has 35858 states and 45001 transitions. Word has length 382 [2020-10-26 22:54:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:54:45,885 INFO L481 AbstractCegarLoop]: Abstraction has 35858 states and 45001 transitions. [2020-10-26 22:54:45,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:54:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 35858 states and 45001 transitions. [2020-10-26 22:54:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-26 22:54:45,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:54:45,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:54:45,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:54:45,898 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:54:45,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:54:45,898 INFO L82 PathProgramCache]: Analyzing trace with hash -548219999, now seen corresponding path program 1 times [2020-10-26 22:54:45,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:54:45,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587449890] [2020-10-26 22:54:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:54:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:47,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:47,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-26 22:54:47,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:54:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-10-26 22:54:47,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-26 22:54:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 22:54:47,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:48,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:54:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:48,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:48,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:54:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:54:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:54:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:54:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:48,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:54:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:48,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:48,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:54:48,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:48,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 22:54:48,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:54:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:54:48,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:48,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:54:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:48,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:48,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:54:48,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 22:54:48,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:54:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 22:54:48,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-26 22:54:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:48,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:48,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:48,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:54:48,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:48,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 22:54:48,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:54:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 22:54:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-26 22:54:49,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587449890] [2020-10-26 22:54:49,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:54:49,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:54:49,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927270868] [2020-10-26 22:54:49,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:54:49,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:54:49,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:54:49,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:54:49,020 INFO L87 Difference]: Start difference. First operand 35858 states and 45001 transitions. Second operand 8 states.