/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:55:55,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:55:55,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:55:55,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:55:55,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:55:55,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:55:55,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:55:55,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:55:55,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:55:55,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:55:55,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:55:55,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:55:55,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:55:55,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:55:55,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:55:55,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:55:55,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:55:55,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:55:55,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:55:55,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:55:55,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:55:55,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:55:55,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:55:55,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:55:55,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:55:55,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:55:55,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:55:55,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:55:55,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:55:55,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:55:55,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:55:55,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:55:55,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:55:55,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:55:55,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:55:55,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:55:55,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:55:55,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:55:55,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:55:55,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:55:55,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:55:55,334 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 [2020-10-28 13:55:55,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:55:55,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:55:55,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:55:55,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:55:55,386 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:55:55,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:55:55,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:55:55,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:55:55,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:55:55,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:55:55,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:55:55,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:55:55,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:55:55,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:55:55,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:55:55,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:55:55,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:55:55,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:55:55,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:55:55,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:55:55,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:55:55,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:55:55,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:55:55,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:55:55,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:55:55,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:55:55,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:55:55,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:55:55,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:55:55,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:55:55,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:55:55,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:55:55,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:55:55,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:55:55,798 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:55:55,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2020-10-28 13:55:55,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea2a40937/e3d7142f7cf040e3b1406140936821b7/FLAG77c84b155 [2020-10-28 13:55:56,825 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:55:56,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2020-10-28 13:55:56,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea2a40937/e3d7142f7cf040e3b1406140936821b7/FLAG77c84b155 [2020-10-28 13:55:56,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea2a40937/e3d7142f7cf040e3b1406140936821b7 [2020-10-28 13:55:56,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:55:56,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:55:56,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:55:56,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:55:56,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:55:56,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:55:56" (1/1) ... [2020-10-28 13:55:56,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61162730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:56, skipping insertion in model container [2020-10-28 13:55:56,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:55:56" (1/1) ... [2020-10-28 13:55:56,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:55:57,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:55:58,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:55:58,060 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:55:58,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:55:58,646 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:55:58,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58 WrapperNode [2020-10-28 13:55:58,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:55:58,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:55:58,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:55:58,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:55:58,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58" (1/1) ... [2020-10-28 13:55:58,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58" (1/1) ... [2020-10-28 13:55:58,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58" (1/1) ... [2020-10-28 13:55:58,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58" (1/1) ... [2020-10-28 13:55:58,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58" (1/1) ... [2020-10-28 13:55:58,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58" (1/1) ... [2020-10-28 13:55:58,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58" (1/1) ... [2020-10-28 13:55:58,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:55:58,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:55:58,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:55:58,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:55:58,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:55:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:55:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:55:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:55:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:55:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:55:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:55:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:55:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:55:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:55:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:55:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:55:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:55:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:55:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:55:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:55:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:55:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:55:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:55:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:55:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:55:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:55:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:55:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:56:03,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:56:03,623 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:56:03,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:56:03 BoogieIcfgContainer [2020-10-28 13:56:03,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:56:03,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:56:03,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:56:03,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:56:03,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:55:56" (1/3) ... [2020-10-28 13:56:03,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dc7a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:56:03, skipping insertion in model container [2020-10-28 13:56:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:58" (2/3) ... [2020-10-28 13:56:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dc7a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:56:03, skipping insertion in model container [2020-10-28 13:56:03,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:56:03" (3/3) ... [2020-10-28 13:56:03,640 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label38.c [2020-10-28 13:56:03,652 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:56:03,658 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:56:03,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:56:03,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:56:03,716 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:56:03,717 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:56:03,717 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:56:03,717 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:56:03,717 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:56:03,717 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:56:03,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:56:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:56:03,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 13:56:03,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:03,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:56:03,767 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:03,772 INFO L82 PathProgramCache]: Analyzing trace with hash 524400232, now seen corresponding path program 1 times [2020-10-28 13:56:03,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:03,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697107765] [2020-10-28 13:56:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:04,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:04,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 13:56:04,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-28 13:56:04,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:04,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:04,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:56:04,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:56:04,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 13:56:04,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:56:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:04,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:04,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:04,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:04,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:56:04,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:04,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:56:04,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:56:04,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697107765] [2020-10-28 13:56:04,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:56:04,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:56:04,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698287484] [2020-10-28 13:56:04,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:56:04,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:04,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:56:04,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:56:04,747 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:56:13,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:13,483 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-28 13:56:13,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:56:13,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-28 13:56:13,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:13,526 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 13:56:13,527 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:56:13,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:56:13,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:56:13,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-28 13:56:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-28 13:56:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-28 13:56:13,715 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 27 [2020-10-28 13:56:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:13,715 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-28 13:56:13,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:56:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-28 13:56:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 13:56:13,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:13,724 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:56:13,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:56:13,724 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:13,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:13,725 INFO L82 PathProgramCache]: Analyzing trace with hash 567417793, now seen corresponding path program 1 times [2020-10-28 13:56:13,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:13,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373794337] [2020-10-28 13:56:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:14,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:14,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 13:56:14,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:56:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 995 [2020-10-28 13:56:14,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:14,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:14,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:56:14,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:56:14,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:56:14,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:14,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:14,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:14,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:14,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:56:14,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:14,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:56:14,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 13:56:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:15,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:15,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:56:15,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:15,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 13:56:15,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:15,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:56:15,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:56:15,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373794337] [2020-10-28 13:56:15,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:56:15,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:56:15,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141969385] [2020-10-28 13:56:15,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:15,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:15,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:15,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:15,189 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-28 13:56:26,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:26,927 INFO L93 Difference]: Finished difference Result 4334 states and 6851 transitions. [2020-10-28 13:56:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:56:26,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-28 13:56:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:26,947 INFO L225 Difference]: With dead ends: 4334 [2020-10-28 13:56:26,948 INFO L226 Difference]: Without dead ends: 2914 [2020-10-28 13:56:26,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:56:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-10-28 13:56:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2867. [2020-10-28 13:56:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2867 states. [2020-10-28 13:56:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3955 transitions. [2020-10-28 13:56:27,045 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3955 transitions. Word has length 97 [2020-10-28 13:56:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:27,046 INFO L481 AbstractCegarLoop]: Abstraction has 2867 states and 3955 transitions. [2020-10-28 13:56:27,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3955 transitions. [2020-10-28 13:56:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 13:56:27,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:27,049 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:56:27,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:56:27,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash 139254497, now seen corresponding path program 1 times [2020-10-28 13:56:27,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:27,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742470431] [2020-10-28 13:56:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:28,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:28,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:56:28,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:56:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-28 13:56:28,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:28,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:56:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:56:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:56:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:56:28,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:28,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:28,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:56:28,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:28,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:56:28,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:28,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:28,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:28,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:56:28,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:28,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 13:56:28,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:28,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:56:28,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:56:28,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742470431] [2020-10-28 13:56:28,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:56:28,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:56:28,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134179205] [2020-10-28 13:56:28,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:28,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:28,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:28,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:28,828 INFO L87 Difference]: Start difference. First operand 2867 states and 3955 transitions. Second operand 7 states. [2020-10-28 13:56:38,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:38,446 INFO L93 Difference]: Finished difference Result 6549 states and 8878 transitions. [2020-10-28 13:56:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:56:38,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-28 13:56:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:38,472 INFO L225 Difference]: With dead ends: 6549 [2020-10-28 13:56:38,472 INFO L226 Difference]: Without dead ends: 3688 [2020-10-28 13:56:38,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:56:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2020-10-28 13:56:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 3613. [2020-10-28 13:56:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3613 states. [2020-10-28 13:56:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 4747 transitions. [2020-10-28 13:56:38,599 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 4747 transitions. Word has length 124 [2020-10-28 13:56:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:38,600 INFO L481 AbstractCegarLoop]: Abstraction has 3613 states and 4747 transitions. [2020-10-28 13:56:38,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:38,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 4747 transitions. [2020-10-28 13:56:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 13:56:38,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:38,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:56:38,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:56:38,617 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:38,618 INFO L82 PathProgramCache]: Analyzing trace with hash 6572733, now seen corresponding path program 1 times [2020-10-28 13:56:38,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:38,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041170378] [2020-10-28 13:56:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:39,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:39,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 13:56:39,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:56:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1213 [2020-10-28 13:56:39,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:39,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:56:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:56:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:56:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:39,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:39,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:56:39,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:39,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:56:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:40,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:40,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 13:56:40,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 13:56:40,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:40,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 13:56:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:56:40,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041170378] [2020-10-28 13:56:40,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:56:40,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:56:40,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122936305] [2020-10-28 13:56:40,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:40,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:40,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:40,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:40,425 INFO L87 Difference]: Start difference. First operand 3613 states and 4747 transitions. Second operand 7 states. [2020-10-28 13:56:50,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:50,821 INFO L93 Difference]: Finished difference Result 8099 states and 11289 transitions. [2020-10-28 13:56:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:56:50,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-10-28 13:56:50,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:50,851 INFO L225 Difference]: With dead ends: 8099 [2020-10-28 13:56:50,851 INFO L226 Difference]: Without dead ends: 5194 [2020-10-28 13:56:50,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:56:50,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2020-10-28 13:56:51,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 5038. [2020-10-28 13:56:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5038 states. [2020-10-28 13:56:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5038 states to 5038 states and 6133 transitions. [2020-10-28 13:56:51,025 INFO L78 Accepts]: Start accepts. Automaton has 5038 states and 6133 transitions. Word has length 159 [2020-10-28 13:56:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:51,026 INFO L481 AbstractCegarLoop]: Abstraction has 5038 states and 6133 transitions. [2020-10-28 13:56:51,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5038 states and 6133 transitions. [2020-10-28 13:56:51,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-28 13:56:51,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:51,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:56:51,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:56:51,032 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:51,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:51,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1004782016, now seen corresponding path program 1 times [2020-10-28 13:56:51,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:51,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822825977] [2020-10-28 13:56:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:51,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:52,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:52,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-28 13:56:52,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:56:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1824 [2020-10-28 13:56:52,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:52,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:56:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:56:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:53,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:53,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:53,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:53,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:56:53,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:53,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:53,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:53,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:56:53,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:53,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 13:56:53,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:53,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:56:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:53,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:56:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:53,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:53,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:56:53,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 13:56:53,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:53,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:56:53,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:56:54,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822825977] [2020-10-28 13:56:54,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:54,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:56:54,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814344982] [2020-10-28 13:56:54,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:56:54,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:54,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:56:54,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:56:54,012 INFO L87 Difference]: Start difference. First operand 5038 states and 6133 transitions. Second operand 8 states. [2020-10-28 13:57:14,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:14,109 INFO L93 Difference]: Finished difference Result 12416 states and 16305 transitions. [2020-10-28 13:57:14,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 13:57:14,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 310 [2020-10-28 13:57:14,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:14,132 INFO L225 Difference]: With dead ends: 12416 [2020-10-28 13:57:14,132 INFO L226 Difference]: Without dead ends: 5893 [2020-10-28 13:57:14,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-28 13:57:14,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2020-10-28 13:57:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5827. [2020-10-28 13:57:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5827 states. [2020-10-28 13:57:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 6467 transitions. [2020-10-28 13:57:14,303 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 6467 transitions. Word has length 310 [2020-10-28 13:57:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:14,304 INFO L481 AbstractCegarLoop]: Abstraction has 5827 states and 6467 transitions. [2020-10-28 13:57:14,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:57:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 6467 transitions. [2020-10-28 13:57:14,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2020-10-28 13:57:14,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:14,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:57:14,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:57:14,325 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:14,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:14,326 INFO L82 PathProgramCache]: Analyzing trace with hash 24246410, now seen corresponding path program 1 times [2020-10-28 13:57:14,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:14,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444999997] [2020-10-28 13:57:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:14,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:19,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 694 [2020-10-28 13:57:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:57:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:57:19,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:19,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 535 [2020-10-28 13:57:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:57:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:19,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:19,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:19,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:19,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:57:19,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:19,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:19,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:19,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:20,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:20,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:20,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:57:20,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-28 13:57:20,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:20,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-28 13:57:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:20,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:20,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:20,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:57:20,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:20,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-28 13:57:20,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:20,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:20,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:20,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:20,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 13:57:20,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:57:21,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:57:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:21,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:21,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:57:21,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:21,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:57:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:21,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 13:57:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:57:21,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:57:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:21,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:21,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:57:21,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:21,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 13:57:21,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:21,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:21,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:57:21,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:57:22,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444999997] [2020-10-28 13:57:22,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:22,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:22,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79480866] [2020-10-28 13:57:22,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:22,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:22,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:22,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:22,310 INFO L87 Difference]: Start difference. First operand 5827 states and 6467 transitions. Second operand 7 states. [2020-10-28 13:57:32,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:32,401 INFO L93 Difference]: Finished difference Result 14106 states and 16151 transitions. [2020-10-28 13:57:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:57:32,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 676 [2020-10-28 13:57:32,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:32,454 INFO L225 Difference]: With dead ends: 14106 [2020-10-28 13:57:32,455 INFO L226 Difference]: Without dead ends: 8987 [2020-10-28 13:57:32,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:57:32,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8987 states. [2020-10-28 13:57:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8987 to 8877. [2020-10-28 13:57:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-10-28 13:57:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 9888 transitions. [2020-10-28 13:57:32,683 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 9888 transitions. Word has length 676 [2020-10-28 13:57:32,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:32,684 INFO L481 AbstractCegarLoop]: Abstraction has 8877 states and 9888 transitions. [2020-10-28 13:57:32,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:57:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 9888 transitions. [2020-10-28 13:57:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-28 13:57:32,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:32,725 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:57:32,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:57:32,726 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:32,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1671824681, now seen corresponding path program 1 times [2020-10-28 13:57:32,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:32,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37423353] [2020-10-28 13:57:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:33,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:38,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:38,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 973 [2020-10-28 13:57:38,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:57:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-28 13:57:38,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:38,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 13:57:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:57:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:38,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:38,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:38,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:38,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:57:38,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:38,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:38,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:38,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:57:38,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 13:57:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:38,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:38,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:38,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:38,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:57:38,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:57:38,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:38,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:57:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:57:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:38,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:38,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:57:38,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:38,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:57:38,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:38,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:38,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:57:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:39,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:39,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:57:39,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:39,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 13:57:39,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:39,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:57:39,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:39,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:39,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:57:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:57:39,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:39,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:57:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:39,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:57:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:39,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:39,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:57:39,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:39,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:57:39,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:39,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:57:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-28 13:57:40,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37423353] [2020-10-28 13:57:40,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:40,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:40,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020633196] [2020-10-28 13:57:40,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:40,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:40,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:40,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:40,077 INFO L87 Difference]: Start difference. First operand 8877 states and 9888 transitions. Second operand 7 states. [2020-10-28 13:57:48,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:48,651 INFO L93 Difference]: Finished difference Result 23797 states and 27439 transitions. [2020-10-28 13:57:48,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:57:48,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 951 [2020-10-28 13:57:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:48,705 INFO L225 Difference]: With dead ends: 23797 [2020-10-28 13:57:48,706 INFO L226 Difference]: Without dead ends: 16338 [2020-10-28 13:57:48,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:57:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16338 states. [2020-10-28 13:57:49,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16338 to 16180. [2020-10-28 13:57:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16180 states. [2020-10-28 13:57:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16180 states to 16180 states and 18142 transitions. [2020-10-28 13:57:49,079 INFO L78 Accepts]: Start accepts. Automaton has 16180 states and 18142 transitions. Word has length 951 [2020-10-28 13:57:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:49,083 INFO L481 AbstractCegarLoop]: Abstraction has 16180 states and 18142 transitions. [2020-10-28 13:57:49,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:57:49,083 INFO L276 IsEmpty]: Start isEmpty. Operand 16180 states and 18142 transitions. [2020-10-28 13:57:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2020-10-28 13:57:49,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:49,101 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:57:49,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:57:49,102 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:49,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1961615876, now seen corresponding path program 1 times [2020-10-28 13:57:49,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:49,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354706210] [2020-10-28 13:57:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:49,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:49,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:54,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:54,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1087 [2020-10-28 13:57:54,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:57:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-28 13:57:54,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:54,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:54,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 13:57:54,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:57:54,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:54,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:54,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:54,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:54,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:57:54,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:54,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:54,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:54,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:54,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:54,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:57:54,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:57:54,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:54,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:54,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:55,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:55,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:55,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:57:55,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:55,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:57:55,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:55,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:55,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:57:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:55,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:55,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:55,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:57:55,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:57:55,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:55,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:55,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:57:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:55,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:55,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:57:55,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-28 13:57:55,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:55,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:57:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:55,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:55,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:55,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:57:55,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:55,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:57:55,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:55,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:57:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:57:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:55,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:56,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:57:56,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:57:56,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:56,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:57:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-28 13:57:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:56,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:56,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:56,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:57:56,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:57:56,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:56,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 13:57:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:56,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 330 proven. 79 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-28 13:57:56,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354706210] [2020-10-28 13:57:56,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:56,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:56,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180063244] [2020-10-28 13:57:56,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:56,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:56,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:56,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:56,971 INFO L87 Difference]: Start difference. First operand 16180 states and 18142 transitions. Second operand 7 states. [2020-10-28 13:58:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:06,295 INFO L93 Difference]: Finished difference Result 36845 states and 42483 transitions. [2020-10-28 13:58:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:58:06,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1063 [2020-10-28 13:58:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:06,362 INFO L225 Difference]: With dead ends: 36845 [2020-10-28 13:58:06,362 INFO L226 Difference]: Without dead ends: 22083 [2020-10-28 13:58:06,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:58:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22083 states. [2020-10-28 13:58:06,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22083 to 22044. [2020-10-28 13:58:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22044 states. [2020-10-28 13:58:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22044 states to 22044 states and 24852 transitions. [2020-10-28 13:58:06,928 INFO L78 Accepts]: Start accepts. Automaton has 22044 states and 24852 transitions. Word has length 1063 [2020-10-28 13:58:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:06,930 INFO L481 AbstractCegarLoop]: Abstraction has 22044 states and 24852 transitions. [2020-10-28 13:58:06,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 22044 states and 24852 transitions. [2020-10-28 13:58:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2020-10-28 13:58:06,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:06,952 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:58:06,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:58:06,952 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:06,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1391509883, now seen corresponding path program 1 times [2020-10-28 13:58:06,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:06,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794820202] [2020-10-28 13:58:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:07,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:10,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:12,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1181 [2020-10-28 13:58:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:58:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 13:58:12,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:12,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:12,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:58:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 983 [2020-10-28 13:58:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-28 13:58:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:12,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:12,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:12,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:58:12,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:12,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:12,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:12,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:12,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:58:12,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:58:12,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:12,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:12,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:12,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:12,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:58:12,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:12,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:58:12,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:12,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:12,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:58:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:12,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:12,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:58:12,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:58:12,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:12,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:13,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:58:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:13,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:13,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:58:13,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:13,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:58:13,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:13,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:13,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:13,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:13,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:13,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:58:13,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:58:13,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:13,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:13,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-28 13:58:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:13,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:58:13,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:13,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:58:13,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:13,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 13:58:13,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:13,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-28 13:58:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:13,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:13,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 13:58:13,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:58:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-28 13:58:13,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:13,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:58:13,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 510 proven. 21 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2020-10-28 13:58:14,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794820202] [2020-10-28 13:58:14,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:14,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:58:14,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156728341] [2020-10-28 13:58:14,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:58:14,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:14,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:58:14,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:58:14,659 INFO L87 Difference]: Start difference. First operand 22044 states and 24852 transitions. Second operand 7 states. [2020-10-28 13:58:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:25,145 INFO L93 Difference]: Finished difference Result 52719 states and 61608 transitions. [2020-10-28 13:58:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:58:25,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1157 [2020-10-28 13:58:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:25,243 INFO L225 Difference]: With dead ends: 52719 [2020-10-28 13:58:25,244 INFO L226 Difference]: Without dead ends: 32093 [2020-10-28 13:58:25,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:58:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32093 states. [2020-10-28 13:58:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32093 to 32045. [2020-10-28 13:58:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32045 states. [2020-10-28 13:58:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32045 states to 32045 states and 36381 transitions. [2020-10-28 13:58:25,906 INFO L78 Accepts]: Start accepts. Automaton has 32045 states and 36381 transitions. Word has length 1157 [2020-10-28 13:58:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:25,908 INFO L481 AbstractCegarLoop]: Abstraction has 32045 states and 36381 transitions. [2020-10-28 13:58:25,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 32045 states and 36381 transitions. [2020-10-28 13:58:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2020-10-28 13:58:26,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:26,222 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:58:26,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:58:26,222 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:26,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:26,223 INFO L82 PathProgramCache]: Analyzing trace with hash 292712118, now seen corresponding path program 1 times [2020-10-28 13:58:26,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:26,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399632616] [2020-10-28 13:58:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:26,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:27,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:28,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:31,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:31,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1256 [2020-10-28 13:58:31,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:58:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 13:58:31,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:31,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1058 [2020-10-28 13:58:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-28 13:58:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:31,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:31,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:31,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:31,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:31,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:58:31,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:31,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:31,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:31,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:31,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:31,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:58:31,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:58:31,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:31,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:31,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:31,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:58:31,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:31,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:58:31,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:31,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:31,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:31,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:31,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:31,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:31,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:58:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:31,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:31,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:31,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:58:31,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:31,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:58:31,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:31,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:31,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:31,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:58:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:32,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:32,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:58:32,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:32,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:58:32,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:32,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:32,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:32,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:32,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:32,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:32,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:32,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:58:32,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:32,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:58:32,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:32,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-28 13:58:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:32,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:32,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:32,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:58:32,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:58:32,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:32,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:32,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:32,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:32,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-28 13:58:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:32,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:32,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:58:32,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:58:32,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:32,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 13:58:32,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1044 [2020-10-28 13:58:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:32,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:32,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 13:58:32,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:58:32,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:32,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:58:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2020-10-28 13:58:33,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399632616] [2020-10-28 13:58:33,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:33,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:58:33,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129690727] [2020-10-28 13:58:33,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:58:33,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:33,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:58:33,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:58:33,350 INFO L87 Difference]: Start difference. First operand 32045 states and 36381 transitions. Second operand 7 states. [2020-10-28 13:58:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:43,658 INFO L93 Difference]: Finished difference Result 74036 states and 86315 transitions. [2020-10-28 13:58:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:58:43,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1230 [2020-10-28 13:58:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:43,773 INFO L225 Difference]: With dead ends: 74036 [2020-10-28 13:58:43,773 INFO L226 Difference]: Without dead ends: 40576 [2020-10-28 13:58:43,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:58:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40576 states. [2020-10-28 13:58:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40576 to 40498. [2020-10-28 13:58:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40498 states. [2020-10-28 13:58:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40498 states to 40498 states and 45566 transitions. [2020-10-28 13:58:44,725 INFO L78 Accepts]: Start accepts. Automaton has 40498 states and 45566 transitions. Word has length 1230 [2020-10-28 13:58:44,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:44,727 INFO L481 AbstractCegarLoop]: Abstraction has 40498 states and 45566 transitions. [2020-10-28 13:58:44,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 40498 states and 45566 transitions. [2020-10-28 13:58:44,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2020-10-28 13:58:44,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:44,757 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:58:44,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:58:44,757 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:44,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:44,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1153892792, now seen corresponding path program 1 times [2020-10-28 13:58:44,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:44,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873703734] [2020-10-28 13:58:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:46,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:46,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1298 [2020-10-28 13:58:46,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-28 13:58:46,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:46,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1269 [2020-10-28 13:58:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 13:58:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:46,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:46,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:46,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:46,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:58:46,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:46,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:58:46,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:46,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:46,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:46,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:46,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:46,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:58:46,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:58:46,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:46,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:58:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:46,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:46,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:46,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:58:46,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:46,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:58:46,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:46,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:46,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:58:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:46,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:46,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:58:46,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:58:46,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:46,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:47,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:47,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:58:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:58:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:47,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:58:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:47,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:47,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:58:47,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:58:47,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:47,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 13:58:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:47,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:47,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-28 13:58:47,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 13:58:47,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:47,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:58:47,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2020-10-28 13:58:48,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873703734] [2020-10-28 13:58:48,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:48,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:58:48,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439152983] [2020-10-28 13:58:48,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:58:48,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:48,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:58:48,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:58:48,287 INFO L87 Difference]: Start difference. First operand 40498 states and 45566 transitions. Second operand 5 states. [2020-10-28 13:58:56,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:56,861 INFO L93 Difference]: Finished difference Result 87317 states and 98847 transitions. [2020-10-28 13:58:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:58:56,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1274 [2020-10-28 13:58:56,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:56,984 INFO L225 Difference]: With dead ends: 87317 [2020-10-28 13:58:56,984 INFO L226 Difference]: Without dead ends: 48237 [2020-10-28 13:58:57,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:58:57,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48237 states. [2020-10-28 13:58:57,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48237 to 48235. [2020-10-28 13:58:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48235 states. [2020-10-28 13:58:58,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48235 states to 48235 states and 53739 transitions. [2020-10-28 13:58:58,266 INFO L78 Accepts]: Start accepts. Automaton has 48235 states and 53739 transitions. Word has length 1274 [2020-10-28 13:58:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:58,268 INFO L481 AbstractCegarLoop]: Abstraction has 48235 states and 53739 transitions. [2020-10-28 13:58:58,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:58:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 48235 states and 53739 transitions. [2020-10-28 13:58:58,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1306 [2020-10-28 13:58:58,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:58,308 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:58:58,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:58:58,308 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:58,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:58,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1108270650, now seen corresponding path program 1 times [2020-10-28 13:58:58,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:58,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591426252] [2020-10-28 13:58:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:03,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1331 [2020-10-28 13:59:03,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:59:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-28 13:59:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:03,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1077 [2020-10-28 13:59:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 13:59:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:03,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:03,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:59:03,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:03,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:04,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:04,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:59:04,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:59:04,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:04,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:04,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:59:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:04,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:04,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:59:04,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:59:04,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:04,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:04,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:59:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:04,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:04,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:04,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:59:04,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:59:04,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:04,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:04,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:04,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:04,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:04,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:04,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:59:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:04,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:04,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:59:04,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:59:04,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:04,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:59:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:04,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:04,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:04,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:59:04,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:59:04,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:04,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:04,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-28 13:59:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:04,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:04,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:59:04,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:04,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:59:04,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:04,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:04,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 991 [2020-10-28 13:59:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:04,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:04,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:04,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:59:04,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:59:04,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:04,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 13:59:04,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:04,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1063 [2020-10-28 13:59:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:05,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:05,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:59:05,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:05,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 13:59:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:05,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-28 13:59:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 758 proven. 2 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2020-10-28 13:59:06,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591426252] [2020-10-28 13:59:06,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:06,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:06,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142968340] [2020-10-28 13:59:06,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:06,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:06,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:06,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:06,808 INFO L87 Difference]: Start difference. First operand 48235 states and 53739 transitions. Second operand 7 states. [2020-10-28 13:59:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:17,632 INFO L93 Difference]: Finished difference Result 100037 states and 111851 transitions. [2020-10-28 13:59:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:59:17,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1305 [2020-10-28 13:59:17,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:17,754 INFO L225 Difference]: With dead ends: 100037 [2020-10-28 13:59:17,755 INFO L226 Difference]: Without dead ends: 53220 [2020-10-28 13:59:17,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:59:17,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53220 states. [2020-10-28 13:59:18,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53220 to 52489. [2020-10-28 13:59:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52489 states. [2020-10-28 13:59:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52489 states to 52489 states and 58305 transitions. [2020-10-28 13:59:18,510 INFO L78 Accepts]: Start accepts. Automaton has 52489 states and 58305 transitions. Word has length 1305 [2020-10-28 13:59:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:18,511 INFO L481 AbstractCegarLoop]: Abstraction has 52489 states and 58305 transitions. [2020-10-28 13:59:18,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 52489 states and 58305 transitions. [2020-10-28 13:59:18,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1329 [2020-10-28 13:59:18,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:18,543 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:18,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:59:18,543 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:18,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1685929039, now seen corresponding path program 1 times [2020-10-28 13:59:18,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:18,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714867560] [2020-10-28 13:59:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:18,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:19,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:23,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:23,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1356 [2020-10-28 13:59:23,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:59:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-28 13:59:23,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:23,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1102 [2020-10-28 13:59:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 13:59:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:24,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:59:24,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:24,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:59:24,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:59:24,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:59:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:59:24,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:59:24,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:24,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:59:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:59:24,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:59:24,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:24,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:59:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:59:24,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:59:24,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:24,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:24,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:59:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:59:24,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:59:24,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-28 13:59:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:59:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:59:24,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:24,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 925 [2020-10-28 13:59:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:24,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1015 [2020-10-28 13:59:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:59:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1086 [2020-10-28 13:59:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:25,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:25,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:59:25,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:25,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:59:25,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:25,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:25,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:25,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:25,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-28 13:59:25,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 802 proven. 2 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2020-10-28 13:59:26,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714867560] [2020-10-28 13:59:26,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:26,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:26,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210257111] [2020-10-28 13:59:26,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:26,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:26,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:26,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:26,691 INFO L87 Difference]: Start difference. First operand 52489 states and 58305 transitions. Second operand 7 states.