/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=DEEPEST --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/Problem15_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:26:57,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:26:57,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:26:57,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:26:57,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:26:57,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:26:57,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:26:57,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:26:57,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:26:57,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:26:57,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:26:57,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:26:57,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:26:57,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:26:57,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:26:57,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:26:57,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:26:57,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:26:57,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:26:57,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:26:57,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:26:57,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:26:57,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:26:57,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:26:57,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:26:57,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:26:57,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:26:57,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:26:57,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:26:57,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:26:57,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:26:57,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:26:57,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:26:57,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:26:57,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:26:57,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:26:57,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:26:57,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:26:57,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:26:57,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:26:57,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:26:57,864 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 [2020-10-27 18:26:57,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:26:57,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:26:57,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:26:57,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:26:57,923 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:26:57,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:26:57,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:26:57,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:26:57,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:26:57,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:26:57,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:26:57,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:26:57,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:26:57,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:26:57,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:26:57,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:26:57,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:26:57,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:26:57,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:26:57,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:26:57,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:26:57,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:26:57,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:26:57,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:26:57,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:26:57,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:26:57,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:26:57,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:26:57,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:26:57,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:26:58,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:26:58,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:26:58,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:26:58,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:26:58,353 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:26:58,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label32.c [2020-10-27 18:26:58,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/125276f2d/ec8d994e788e45d2be2a5b558b57e930/FLAG521c69aab [2020-10-27 18:26:59,248 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:26:59,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label32.c [2020-10-27 18:26:59,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/125276f2d/ec8d994e788e45d2be2a5b558b57e930/FLAG521c69aab [2020-10-27 18:26:59,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/125276f2d/ec8d994e788e45d2be2a5b558b57e930 [2020-10-27 18:26:59,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:26:59,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:26:59,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:26:59,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:26:59,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:26:59,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:26:59" (1/1) ... [2020-10-27 18:26:59,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792103a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59, skipping insertion in model container [2020-10-27 18:26:59,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:26:59" (1/1) ... [2020-10-27 18:26:59,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:26:59,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:27:00,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:27:00,351 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:27:00,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:27:00,655 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:27:00,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00 WrapperNode [2020-10-27 18:27:00,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:27:00,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:27:00,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:27:00,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:27:00,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00" (1/1) ... [2020-10-27 18:27:00,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00" (1/1) ... [2020-10-27 18:27:00,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00" (1/1) ... [2020-10-27 18:27:00,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00" (1/1) ... [2020-10-27 18:27:00,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00" (1/1) ... [2020-10-27 18:27:00,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00" (1/1) ... [2020-10-27 18:27:00,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00" (1/1) ... [2020-10-27 18:27:00,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:27:00,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:27:00,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:27:00,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:27:00,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00" (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 [2020-10-27 18:27:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:27:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:27:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:27:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:27:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:27:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:27:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:27:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:27:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:27:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:27:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:27:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:27:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:27:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:27:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:27:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:27:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:27:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:27:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:27:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:27:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:27:04,464 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:27:04,465 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:27:04,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:27:04 BoogieIcfgContainer [2020-10-27 18:27:04,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:27:04,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:27:04,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:27:04,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:27:04,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:26:59" (1/3) ... [2020-10-27 18:27:04,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bc2726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:27:04, skipping insertion in model container [2020-10-27 18:27:04,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:27:00" (2/3) ... [2020-10-27 18:27:04,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bc2726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:27:04, skipping insertion in model container [2020-10-27 18:27:04,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:27:04" (3/3) ... [2020-10-27 18:27:04,483 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label32.c [2020-10-27 18:27:04,496 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:27:04,502 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:27:04,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:27:04,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:27:04,567 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:27:04,567 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:27:04,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:27:04,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:27:04,568 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:27:04,568 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:27:04,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:27:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-27 18:27:04,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 18:27:04,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:04,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:27:04,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:04,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:04,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1958412241, now seen corresponding path program 1 times [2020-10-27 18:27:04,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:04,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680525002] [2020-10-27 18:27:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:05,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:05,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 18:27:05,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:05,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-27 18:27:05,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:27:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:27:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 18:27:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:27:05,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:05,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:05,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:05,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:27:05,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:27:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:27:05,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680525002] [2020-10-27 18:27:05,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:27:05,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:27:05,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663130555] [2020-10-27 18:27:05,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:27:05,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:05,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:27:05,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:27:05,797 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-27 18:27:13,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:27:13,991 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-27 18:27:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:27:13,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-27 18:27:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:27:14,016 INFO L225 Difference]: With dead ends: 1204 [2020-10-27 18:27:14,016 INFO L226 Difference]: Without dead ends: 698 [2020-10-27 18:27:14,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:27:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-27 18:27:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-27 18:27:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-27 18:27:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-27 18:27:14,137 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 56 [2020-10-27 18:27:14,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:27:14,138 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-27 18:27:14,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:27:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-27 18:27:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 18:27:14,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:14,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:27:14,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:27:14,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:14,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:14,146 INFO L82 PathProgramCache]: Analyzing trace with hash -777758714, now seen corresponding path program 1 times [2020-10-27 18:27:14,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:14,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239188290] [2020-10-27 18:27:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:17,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:17,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 18:27:17,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:27:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3280 [2020-10-27 18:27:17,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:27:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:27:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 18:27:17,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:27:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:17,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:17,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:17,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:17,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:27:17,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:17,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:27:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:17,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:17,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:17,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:27:17,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 18:27:17,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:27:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:27:17,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239188290] [2020-10-27 18:27:17,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:27:17,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:27:17,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967927729] [2020-10-27 18:27:17,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:27:17,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:17,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:27:17,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:27:17,853 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 5 states. [2020-10-27 18:27:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:27:24,650 INFO L93 Difference]: Finished difference Result 2010 states and 2964 transitions. [2020-10-27 18:27:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:27:24,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-27 18:27:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:27:24,663 INFO L225 Difference]: With dead ends: 2010 [2020-10-27 18:27:24,663 INFO L226 Difference]: Without dead ends: 1324 [2020-10-27 18:27:24,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:27:24,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-10-27 18:27:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1318. [2020-10-27 18:27:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1318 states. [2020-10-27 18:27:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1711 transitions. [2020-10-27 18:27:24,744 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1711 transitions. Word has length 125 [2020-10-27 18:27:24,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:27:24,746 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1711 transitions. [2020-10-27 18:27:24,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:27:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1711 transitions. [2020-10-27 18:27:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-27 18:27:24,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:24,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:27:24,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:27:24,763 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:24,768 INFO L82 PathProgramCache]: Analyzing trace with hash -422052648, now seen corresponding path program 1 times [2020-10-27 18:27:24,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:24,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100464028] [2020-10-27 18:27:24,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:24,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:26,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:29,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:29,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 18:27:29,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:27:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 18:27:29,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:27:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:27:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 18:27:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:30,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:30,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:30,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:30,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:30,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:30,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:27:30,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:30,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:30,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:27:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:30,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:30,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:27:30,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:30,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:27:30,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:30,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:30,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:27:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:30,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:30,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:27:30,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:30,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:27:30,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:27:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 18:27:30,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100464028] [2020-10-27 18:27:30,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:27:30,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:27:30,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324187546] [2020-10-27 18:27:30,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:27:30,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:30,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:27:30,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:27:30,298 INFO L87 Difference]: Start difference. First operand 1318 states and 1711 transitions. Second operand 5 states. [2020-10-27 18:27:37,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:27:37,326 INFO L93 Difference]: Finished difference Result 3265 states and 4370 transitions. [2020-10-27 18:27:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:27:37,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-27 18:27:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:27:37,340 INFO L225 Difference]: With dead ends: 3265 [2020-10-27 18:27:37,341 INFO L226 Difference]: Without dead ends: 1953 [2020-10-27 18:27:37,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:27:37,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2020-10-27 18:27:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1949. [2020-10-27 18:27:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2020-10-27 18:27:37,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2427 transitions. [2020-10-27 18:27:37,403 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2427 transitions. Word has length 230 [2020-10-27 18:27:37,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:27:37,404 INFO L481 AbstractCegarLoop]: Abstraction has 1949 states and 2427 transitions. [2020-10-27 18:27:37,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:27:37,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2427 transitions. [2020-10-27 18:27:37,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-27 18:27:37,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:37,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:27:37,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:27:37,410 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:37,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:37,411 INFO L82 PathProgramCache]: Analyzing trace with hash -504341205, now seen corresponding path program 1 times [2020-10-27 18:27:37,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:37,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933319388] [2020-10-27 18:27:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:37,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:37,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:37,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:40,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:41,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:42,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:42,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-27 18:27:42,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:27:42,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 18:27:42,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:27:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-27 18:27:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 18:27:42,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:42,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:42,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:42,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:42,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:42,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:42,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:27:42,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:42,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:42,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:27:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:42,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:42,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:27:42,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 18:27:42,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:42,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:42,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:27:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:42,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:42,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:42,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:27:42,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 18:27:42,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 18:27:42,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:27:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 18:27:43,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933319388] [2020-10-27 18:27:43,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:27:43,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:27:43,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698922996] [2020-10-27 18:27:43,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:27:43,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:43,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:27:43,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:27:43,132 INFO L87 Difference]: Start difference. First operand 1949 states and 2427 transitions. Second operand 5 states. [2020-10-27 18:27:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:27:52,194 INFO L93 Difference]: Finished difference Result 4525 states and 5820 transitions. [2020-10-27 18:27:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:27:52,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2020-10-27 18:27:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:27:52,211 INFO L225 Difference]: With dead ends: 4525 [2020-10-27 18:27:52,212 INFO L226 Difference]: Without dead ends: 2582 [2020-10-27 18:27:52,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:27:52,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-10-27 18:27:52,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2575. [2020-10-27 18:27:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-27 18:27:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3151 transitions. [2020-10-27 18:27:52,308 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3151 transitions. Word has length 274 [2020-10-27 18:27:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:27:52,309 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3151 transitions. [2020-10-27 18:27:52,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:27:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3151 transitions. [2020-10-27 18:27:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-27 18:27:52,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:52,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:27:52,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:27:52,315 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash 882444205, now seen corresponding path program 1 times [2020-10-27 18:27:52,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:52,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315996008] [2020-10-27 18:27:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:54,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:57,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:57,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-27 18:27:57,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:27:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 18:27:57,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:27:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-27 18:27:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 18:27:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:57,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:57,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:57,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:57,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:57,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:27:57,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:57,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:27:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:57,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:57,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:27:57,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:27:57,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:27:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:57,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:57,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:57,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:27:57,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:57,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 18:27:57,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 18:27:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 18:27:57,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315996008] [2020-10-27 18:27:57,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:27:57,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:27:57,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387705716] [2020-10-27 18:27:57,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:27:57,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:57,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:27:57,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:27:57,906 INFO L87 Difference]: Start difference. First operand 2575 states and 3151 transitions. Second operand 5 states. [2020-10-27 18:28:06,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:28:06,457 INFO L93 Difference]: Finished difference Result 5770 states and 7265 transitions. [2020-10-27 18:28:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:28:06,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2020-10-27 18:28:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:28:06,478 INFO L225 Difference]: With dead ends: 5770 [2020-10-27 18:28:06,478 INFO L226 Difference]: Without dead ends: 3201 [2020-10-27 18:28:06,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:28:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2020-10-27 18:28:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 3194. [2020-10-27 18:28:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2020-10-27 18:28:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 3863 transitions. [2020-10-27 18:28:06,579 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 3863 transitions. Word has length 274 [2020-10-27 18:28:06,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:28:06,580 INFO L481 AbstractCegarLoop]: Abstraction has 3194 states and 3863 transitions. [2020-10-27 18:28:06,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:28:06,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 3863 transitions. [2020-10-27 18:28:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-27 18:28:06,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:28:06,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:28:06,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:28:06,588 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:28:06,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:28:06,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1382640800, now seen corresponding path program 1 times [2020-10-27 18:28:06,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:28:06,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787738661] [2020-10-27 18:28:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:28:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:06,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:06,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:08,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:11,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:11,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-27 18:28:11,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:28:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 18:28:11,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:28:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:28:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 18:28:11,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:11,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:28:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:11,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:11,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:11,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:28:11,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:28:11,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:28:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:11,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:11,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:28:11,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:11,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:28:11,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:11,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:11,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:11,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:28:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:12,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:12,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 18:28:12,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:28:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 18:28:12,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:28:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 18:28:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:28:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 18:28:12,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787738661] [2020-10-27 18:28:12,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:28:12,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:28:12,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911110128] [2020-10-27 18:28:12,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:28:12,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:28:12,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:28:12,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:28:12,233 INFO L87 Difference]: Start difference. First operand 3194 states and 3863 transitions. Second operand 6 states. [2020-10-27 18:28:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:28:26,837 INFO L93 Difference]: Finished difference Result 9495 states and 11715 transitions. [2020-10-27 18:28:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:28:26,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 308 [2020-10-27 18:28:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:28:26,873 INFO L225 Difference]: With dead ends: 9495 [2020-10-27 18:28:26,873 INFO L226 Difference]: Without dead ends: 6307 [2020-10-27 18:28:26,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:28:26,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2020-10-27 18:28:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 5675. [2020-10-27 18:28:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5675 states. [2020-10-27 18:28:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5675 states to 5675 states and 6895 transitions. [2020-10-27 18:28:27,047 INFO L78 Accepts]: Start accepts. Automaton has 5675 states and 6895 transitions. Word has length 308 [2020-10-27 18:28:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:28:27,048 INFO L481 AbstractCegarLoop]: Abstraction has 5675 states and 6895 transitions. [2020-10-27 18:28:27,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:28:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5675 states and 6895 transitions. [2020-10-27 18:28:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 18:28:27,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:28:27,058 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:28:27,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:28:27,058 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:28:27,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:28:27,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1618739401, now seen corresponding path program 1 times [2020-10-27 18:28:27,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:28:27,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653859893] [2020-10-27 18:28:27,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:28:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:27,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:27,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:27,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:27,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:30,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:30,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:31,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:32,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:32,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-27 18:28:32,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 18:28:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 18:28:32,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:28:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 285 [2020-10-27 18:28:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 18:28:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:28:32,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:28:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:32,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:32,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:32,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:28:32,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:32,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:28:32,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:28:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:32,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:32,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:28:32,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 18:28:32,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:32,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:32,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:28:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:32,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:32,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:32,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:28:32,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:28:32,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:28:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:32,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:32,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:28:32,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:32,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 18:28:32,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:28:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 18:28:32,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 147 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-27 18:28:32,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653859893] [2020-10-27 18:28:32,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:28:32,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:28:32,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826979672] [2020-10-27 18:28:32,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:28:32,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:28:32,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:28:32,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:28:32,829 INFO L87 Difference]: Start difference. First operand 5675 states and 6895 transitions. Second operand 5 states. [2020-10-27 18:28:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:28:42,381 INFO L93 Difference]: Finished difference Result 14132 states and 17715 transitions. [2020-10-27 18:28:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:28:42,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-27 18:28:42,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:28:42,424 INFO L225 Difference]: With dead ends: 14132 [2020-10-27 18:28:42,424 INFO L226 Difference]: Without dead ends: 8463 [2020-10-27 18:28:42,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:28:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8463 states. [2020-10-27 18:28:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8463 to 8459. [2020-10-27 18:28:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8459 states. [2020-10-27 18:28:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8459 states to 8459 states and 10292 transitions. [2020-10-27 18:28:42,666 INFO L78 Accepts]: Start accepts. Automaton has 8459 states and 10292 transitions. Word has length 329 [2020-10-27 18:28:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:28:42,667 INFO L481 AbstractCegarLoop]: Abstraction has 8459 states and 10292 transitions. [2020-10-27 18:28:42,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:28:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 8459 states and 10292 transitions. [2020-10-27 18:28:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-27 18:28:42,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:28:42,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:28:42,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:28:42,684 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:28:42,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:28:42,687 INFO L82 PathProgramCache]: Analyzing trace with hash -204321852, now seen corresponding path program 1 times [2020-10-27 18:28:42,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:28:42,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732063826] [2020-10-27 18:28:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:28:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:43,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:46,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:46,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-27 18:28:46,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:28:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3477 [2020-10-27 18:28:46,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:28:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 328 [2020-10-27 18:28:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 18:28:46,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:28:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:46,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:46,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:28:46,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:46,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:28:46,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:46,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:28:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:46,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:46,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:28:46,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:46,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:28:46,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:46,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:28:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:46,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:46,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 18:28:46,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 18:28:46,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:28:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:28:46,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 18:28:46,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732063826] [2020-10-27 18:28:46,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:28:46,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:28:46,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773885607] [2020-10-27 18:28:46,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:28:46,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:28:46,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:28:46,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:28:46,918 INFO L87 Difference]: Start difference. First operand 8459 states and 10292 transitions. Second operand 5 states. [2020-10-27 18:28:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:28:57,596 INFO L93 Difference]: Finished difference Result 21557 states and 26936 transitions. [2020-10-27 18:28:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:28:57,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2020-10-27 18:28:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:28:57,655 INFO L225 Difference]: With dead ends: 21557 [2020-10-27 18:28:57,655 INFO L226 Difference]: Without dead ends: 13104 [2020-10-27 18:28:57,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:28:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13104 states. [2020-10-27 18:28:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13104 to 13100. [2020-10-27 18:28:57,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13100 states. [2020-10-27 18:28:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13100 states to 13100 states and 16080 transitions. [2020-10-27 18:28:58,010 INFO L78 Accepts]: Start accepts. Automaton has 13100 states and 16080 transitions. Word has length 372 [2020-10-27 18:28:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:28:58,011 INFO L481 AbstractCegarLoop]: Abstraction has 13100 states and 16080 transitions. [2020-10-27 18:28:58,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:28:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 13100 states and 16080 transitions. [2020-10-27 18:28:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-27 18:28:58,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:28:58,035 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:28:58,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:28:58,035 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:28:58,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:28:58,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2095709044, now seen corresponding path program 1 times [2020-10-27 18:28:58,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:28:58,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871450859] [2020-10-27 18:28:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:28:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:58,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:58,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:59,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:59,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:59,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:00,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:00,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:03,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:03,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-27 18:29:03,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:29:03,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 18:29:03,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:29:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-27 18:29:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 18:29:03,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:03,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:29:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:03,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:03,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:29:03,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:03,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:29:03,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:03,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:03,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:29:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:03,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:03,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:29:03,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:29:03,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:29:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:03,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:03,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:29:03,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 18:29:03,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 18:29:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 18:29:03,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 18:29:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:03,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:03,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 18:29:03,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:03,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 18:29:03,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:29:03,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 18:29:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-27 18:29:04,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871450859] [2020-10-27 18:29:04,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:29:04,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:29:04,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893348612] [2020-10-27 18:29:04,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:29:04,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:29:04,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:29:04,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:29:04,014 INFO L87 Difference]: Start difference. First operand 13100 states and 16080 transitions. Second operand 8 states. [2020-10-27 18:29:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:29:17,810 INFO L93 Difference]: Finished difference Result 36054 states and 47049 transitions. [2020-10-27 18:29:17,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 18:29:17,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 398 [2020-10-27 18:29:17,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:29:17,917 INFO L225 Difference]: With dead ends: 36054 [2020-10-27 18:29:17,918 INFO L226 Difference]: Without dead ends: 22960 [2020-10-27 18:29:17,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-27 18:29:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22960 states. [2020-10-27 18:29:18,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22960 to 17902. [2020-10-27 18:29:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17902 states. [2020-10-27 18:29:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17902 states to 17902 states and 21942 transitions. [2020-10-27 18:29:18,442 INFO L78 Accepts]: Start accepts. Automaton has 17902 states and 21942 transitions. Word has length 398 [2020-10-27 18:29:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:29:18,443 INFO L481 AbstractCegarLoop]: Abstraction has 17902 states and 21942 transitions. [2020-10-27 18:29:18,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:29:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 17902 states and 21942 transitions. [2020-10-27 18:29:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-27 18:29:18,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:29:18,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:29:18,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:29:18,584 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:29:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:29:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1905325491, now seen corresponding path program 1 times [2020-10-27 18:29:18,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:29:18,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261914552] [2020-10-27 18:29:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:29:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:18,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:19,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:20,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:23,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:23,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-27 18:29:23,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:29:23,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 18:29:23,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 18:29:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 18:29:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:23,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:29:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:23,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:23,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:29:23,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:23,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:29:23,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:23,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:29:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:23,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:23,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:23,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:29:23,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:29:23,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:29:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 18:29:23,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:29:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:24,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:24,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:29:24,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 18:29:24,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:29:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 18:29:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:24,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 18:29:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:24,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:24,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 18:29:24,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 18:29:24,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-27 18:29:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:24,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 240 proven. 120 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-27 18:29:24,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261914552] [2020-10-27 18:29:24,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:29:24,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:29:24,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611453807] [2020-10-27 18:29:24,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:29:24,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:29:24,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:29:24,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:29:24,408 INFO L87 Difference]: Start difference. First operand 17902 states and 21942 transitions. Second operand 7 states. [2020-10-27 18:29:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:29:33,964 INFO L93 Difference]: Finished difference Result 42044 states and 52095 transitions. [2020-10-27 18:29:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:29:33,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 428 [2020-10-27 18:29:33,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:29:34,035 INFO L225 Difference]: With dead ends: 42044 [2020-10-27 18:29:34,036 INFO L226 Difference]: Without dead ends: 19460 [2020-10-27 18:29:34,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:29:34,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19460 states. [2020-10-27 18:29:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19460 to 16631. [2020-10-27 18:29:34,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16631 states. [2020-10-27 18:29:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16631 states to 16631 states and 18838 transitions. [2020-10-27 18:29:34,463 INFO L78 Accepts]: Start accepts. Automaton has 16631 states and 18838 transitions. Word has length 428 [2020-10-27 18:29:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:29:34,463 INFO L481 AbstractCegarLoop]: Abstraction has 16631 states and 18838 transitions. [2020-10-27 18:29:34,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:29:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 16631 states and 18838 transitions. [2020-10-27 18:29:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-27 18:29:34,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:29:34,484 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:29:34,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:29:34,485 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:29:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:29:34,485 INFO L82 PathProgramCache]: Analyzing trace with hash 211255015, now seen corresponding path program 1 times [2020-10-27 18:29:34,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:29:34,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289497417] [2020-10-27 18:29:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:29:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:35,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:35,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:39,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-27 18:29:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:29:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 18:29:39,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-27 18:29:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-27 18:29:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:29:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:39,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:40,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:40,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:29:40,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:40,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:29:40,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:40,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:29:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:40,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:40,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:40,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:29:40,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 18:29:40,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:40,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:29:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:40,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:40,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:40,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:29:40,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 18:29:40,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:29:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 18:29:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-27 18:29:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:40,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:40,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 18:29:40,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 18:29:40,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:29:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-27 18:29:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 408 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-27 18:29:40,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289497417] [2020-10-27 18:29:40,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:29:40,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:29:40,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091117498] [2020-10-27 18:29:40,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:29:40,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:29:40,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:29:40,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:29:40,865 INFO L87 Difference]: Start difference. First operand 16631 states and 18838 transitions. Second operand 7 states. [2020-10-27 18:29:49,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:29:49,902 INFO L93 Difference]: Finished difference Result 36998 states and 41976 transitions. [2020-10-27 18:29:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:29:49,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 521 [2020-10-27 18:29:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:29:49,964 INFO L225 Difference]: With dead ends: 36998 [2020-10-27 18:29:49,964 INFO L226 Difference]: Without dead ends: 20373 [2020-10-27 18:29:49,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:29:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20373 states. [2020-10-27 18:29:50,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20373 to 18499. [2020-10-27 18:29:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18499 states. [2020-10-27 18:29:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18499 states to 18499 states and 20735 transitions. [2020-10-27 18:29:50,344 INFO L78 Accepts]: Start accepts. Automaton has 18499 states and 20735 transitions. Word has length 521 [2020-10-27 18:29:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:29:50,346 INFO L481 AbstractCegarLoop]: Abstraction has 18499 states and 20735 transitions. [2020-10-27 18:29:50,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:29:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 18499 states and 20735 transitions. [2020-10-27 18:29:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-10-27 18:29:50,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:29:50,370 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:29:50,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:29:50,370 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:29:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:29:50,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1758901037, now seen corresponding path program 1 times [2020-10-27 18:29:50,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:29:50,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106020067] [2020-10-27 18:29:50,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:29:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:50,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:55,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:55,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 637 [2020-10-27 18:29:55,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:29:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 18:29:55,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:29:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 451 [2020-10-27 18:29:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 18:29:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:29:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:55,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:55,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:55,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:29:55,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:55,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:29:55,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:55,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:29:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:55,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:55,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:29:55,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:55,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 18:29:55,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:55,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:55,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:55,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:55,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:55,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:29:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:55,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:56,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:56,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:29:56,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:29:56,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-27 18:29:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:56,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:56,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 18:29:56,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:56,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 18:29:56,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:56,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 18:29:56,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:56,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 18:29:56,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:56,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-27 18:29:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:56,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:56,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:56,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 18:29:56,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:56,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 18:29:56,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:29:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 18:29:56,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 548 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-27 18:29:56,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106020067] [2020-10-27 18:29:56,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:29:56,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:29:56,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309327478] [2020-10-27 18:29:56,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:29:56,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:29:56,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:29:56,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:29:56,670 INFO L87 Difference]: Start difference. First operand 18499 states and 20735 transitions. Second operand 8 states. [2020-10-27 18:30:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:30:13,772 INFO L93 Difference]: Finished difference Result 45006 states and 50280 transitions. [2020-10-27 18:30:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 18:30:13,773 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 619 [2020-10-27 18:30:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:30:13,825 INFO L225 Difference]: With dead ends: 45006 [2020-10-27 18:30:13,825 INFO L226 Difference]: Without dead ends: 22759 [2020-10-27 18:30:13,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 18:30:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22759 states. [2020-10-27 18:30:14,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22759 to 19066. [2020-10-27 18:30:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19066 states. [2020-10-27 18:30:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19066 states to 19066 states and 20478 transitions. [2020-10-27 18:30:14,236 INFO L78 Accepts]: Start accepts. Automaton has 19066 states and 20478 transitions. Word has length 619 [2020-10-27 18:30:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:30:14,238 INFO L481 AbstractCegarLoop]: Abstraction has 19066 states and 20478 transitions. [2020-10-27 18:30:14,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:30:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 19066 states and 20478 transitions. [2020-10-27 18:30:14,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-10-27 18:30:14,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:30:14,258 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:30:14,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:30:14,259 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:30:14,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:30:14,259 INFO L82 PathProgramCache]: Analyzing trace with hash -832836611, now seen corresponding path program 1 times [2020-10-27 18:30:14,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:30:14,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916496942] [2020-10-27 18:30:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:30:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:14,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:14,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:19,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:19,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 637 [2020-10-27 18:30:19,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:30:19,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 18:30:19,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:19,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:30:19,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 579 [2020-10-27 18:30:19,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 18:30:19,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:19,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:30:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:19,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:19,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:30:19,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:19,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:30:19,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:19,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:19,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:30:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:19,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:19,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:30:19,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:30:19,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:19,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:19,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:19,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:19,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:30:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:19,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:19,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 18:30:19,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:19,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:30:19,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 18:30:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:19,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:19,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 18:30:19,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:30:19,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:19,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-10-27 18:30:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:20,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:20,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:30:20,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 18:30:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:30:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:30:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 197 proven. 4 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2020-10-27 18:30:20,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916496942] [2020-10-27 18:30:20,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:30:20,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:30:20,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931017833] [2020-10-27 18:30:20,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:30:20,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:30:20,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:30:20,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:30:20,281 INFO L87 Difference]: Start difference. First operand 19066 states and 20478 transitions. Second operand 5 states. [2020-10-27 18:30:25,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:30:25,846 INFO L93 Difference]: Finished difference Result 39682 states and 42575 transitions. [2020-10-27 18:30:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:30:25,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 619 [2020-10-27 18:30:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:30:25,892 INFO L225 Difference]: With dead ends: 39682 [2020-10-27 18:30:25,893 INFO L226 Difference]: Without dead ends: 20313 [2020-10-27 18:30:25,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:30:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-10-27 18:30:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 19064. [2020-10-27 18:30:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19064 states. [2020-10-27 18:30:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 20449 transitions. [2020-10-27 18:30:26,426 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 20449 transitions. Word has length 619 [2020-10-27 18:30:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:30:26,427 INFO L481 AbstractCegarLoop]: Abstraction has 19064 states and 20449 transitions. [2020-10-27 18:30:26,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:30:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 20449 transitions. [2020-10-27 18:30:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2020-10-27 18:30:26,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:30:26,450 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:30:26,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:30:26,451 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:30:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:30:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1975126029, now seen corresponding path program 1 times [2020-10-27 18:30:26,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:30:26,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657133099] [2020-10-27 18:30:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:30:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:26,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:31,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:31,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 651 [2020-10-27 18:30:31,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:30:31,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 18:30:31,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:30:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 467 [2020-10-27 18:30:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 18:30:31,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:30:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:31,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:31,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:30:31,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:30:31,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:30:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:31,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:31,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:30:31,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:31,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:30:31,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:31,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:31,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:30:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:32,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:32,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 18:30:32,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:30:32,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 18:30:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:32,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:32,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:32,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 18:30:32,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 18:30:32,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:30:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 18:30:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-10-27 18:30:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:32,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:32,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 18:30:32,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 18:30:32,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:30:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:30:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 18:30:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 522 proven. 2 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2020-10-27 18:30:32,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657133099] [2020-10-27 18:30:32,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:30:32,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:30:32,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17957601] [2020-10-27 18:30:32,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:30:32,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:30:32,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:30:32,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:30:32,567 INFO L87 Difference]: Start difference. First operand 19064 states and 20449 transitions. Second operand 7 states.