/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:38:40,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:38:40,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:38:40,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:38:40,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:38:40,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:38:40,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:38:40,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:38:40,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:38:40,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:38:40,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:38:40,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:38:40,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:38:40,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:38:40,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:38:40,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:38:40,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:38:40,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:38:40,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:38:40,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:38:40,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:38:40,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:38:40,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:38:40,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:38:40,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:38:40,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:38:40,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:38:40,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:38:40,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:38:40,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:38:40,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:38:40,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:38:40,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:38:40,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:38:40,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:38:40,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:38:40,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:38:40,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:38:40,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:38:40,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:38:40,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:38:40,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:38:40,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:38:40,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:38:40,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:38:40,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:38:40,992 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:38:40,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:38:40,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:38:40,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:38:40,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:38:40,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:38:40,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:38:40,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:38:40,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:38:40,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:38:40,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:38:40,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:38:40,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:38:40,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:38:40,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:38:40,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:38:40,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:38:40,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:38:40,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:38:40,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:38:40,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:38:40,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:38:40,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:38:40,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:38:40,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:38:40,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:38:41,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:38:41,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:38:41,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:38:41,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:38:41,410 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:38:41,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label18.c [2020-10-29 05:38:41,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cadce771/21c6d1b67a8e4a058b156fa6cdd26039/FLAG38db0ebc2 [2020-10-29 05:38:42,786 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:38:42,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label18.c [2020-10-29 05:38:42,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cadce771/21c6d1b67a8e4a058b156fa6cdd26039/FLAG38db0ebc2 [2020-10-29 05:38:43,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cadce771/21c6d1b67a8e4a058b156fa6cdd26039 [2020-10-29 05:38:43,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:38:43,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:38:43,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:38:43,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:38:43,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:38:43,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:38:43" (1/1) ... [2020-10-29 05:38:43,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6278fa2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:43, skipping insertion in model container [2020-10-29 05:38:43,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:38:43" (1/1) ... [2020-10-29 05:38:43,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:38:43,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:38:45,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:38:45,571 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:38:46,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:38:46,949 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:38:46,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46 WrapperNode [2020-10-29 05:38:46,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:38:46,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:38:46,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:38:46,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:38:46,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46" (1/1) ... [2020-10-29 05:38:46,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46" (1/1) ... [2020-10-29 05:38:47,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46" (1/1) ... [2020-10-29 05:38:47,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46" (1/1) ... [2020-10-29 05:38:47,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46" (1/1) ... [2020-10-29 05:38:47,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46" (1/1) ... [2020-10-29 05:38:47,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46" (1/1) ... [2020-10-29 05:38:47,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:38:47,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:38:47,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:38:47,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:38:47,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:38:47,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:38:47,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:38:47,557 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:38:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:38:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:38:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:38:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:38:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:38:47,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:38:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:38:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:38:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:38:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:38:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:38:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:38:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:38:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:38:59,476 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:38:59,476 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:38:59,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:38:59 BoogieIcfgContainer [2020-10-29 05:38:59,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:38:59,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:38:59,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:38:59,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:38:59,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:38:43" (1/3) ... [2020-10-29 05:38:59,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3585bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:38:59, skipping insertion in model container [2020-10-29 05:38:59,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:38:46" (2/3) ... [2020-10-29 05:38:59,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3585bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:38:59, skipping insertion in model container [2020-10-29 05:38:59,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:38:59" (3/3) ... [2020-10-29 05:38:59,493 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label18.c [2020-10-29 05:38:59,505 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:38:59,512 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:38:59,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:38:59,575 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:38:59,575 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:38:59,575 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:38:59,575 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:38:59,575 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:38:59,575 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:38:59,576 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:38:59,576 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:38:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:38:59,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-29 05:38:59,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:38:59,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:38:59,701 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:38:59,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:38:59,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1210181668, now seen corresponding path program 1 times [2020-10-29 05:38:59,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:38:59,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208069796] [2020-10-29 05:38:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:39:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:06,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:06,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1007 [2020-10-29 05:39:06,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:39:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-29 05:39:06,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:06,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:39:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:39:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 998 [2020-10-29 05:39:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:39:07,951 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:39:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:39:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:07,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:08,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:08,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:39:08,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 05:39:08,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:08,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:39:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:39:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:39:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:39:09,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208069796] [2020-10-29 05:39:09,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:39:09,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:39:09,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232805466] [2020-10-29 05:39:09,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:39:09,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:39:09,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:39:09,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:39:09,798 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:39:10,322 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:39:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:39:32,812 INFO L93 Difference]: Finished difference Result 3791 states and 7065 transitions. [2020-10-29 05:39:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:39:32,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 989 [2020-10-29 05:39:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:39:32,859 INFO L225 Difference]: With dead ends: 3791 [2020-10-29 05:39:32,860 INFO L226 Difference]: Without dead ends: 2408 [2020-10-29 05:39:32,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:39:32,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-10-29 05:39:33,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2353. [2020-10-29 05:39:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2353 states. [2020-10-29 05:39:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 3985 transitions. [2020-10-29 05:39:33,108 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 3985 transitions. Word has length 989 [2020-10-29 05:39:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:39:33,115 INFO L481 AbstractCegarLoop]: Abstraction has 2353 states and 3985 transitions. [2020-10-29 05:39:33,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:39:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 3985 transitions. [2020-10-29 05:39:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-29 05:39:33,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:39:33,166 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:39:33,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:39:33,167 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:39:33,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:39:33,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1508790523, now seen corresponding path program 1 times [2020-10-29 05:39:33,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:39:33,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707215235] [2020-10-29 05:39:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:39:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:38,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:38,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-29 05:39:38,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:39:38,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 05:39:38,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:38,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:39:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:39:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 995 [2020-10-29 05:39:38,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:39:40,301 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:39:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:39:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:40,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:40,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:39:40,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:40,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:39:40,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:40,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:39:40,522 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:39:40,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:39:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:40,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:40,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:39:40,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:39:40,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:40,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:39:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:39:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:39:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:39:41,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707215235] [2020-10-29 05:39:41,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:39:41,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:39:41,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471845617] [2020-10-29 05:39:41,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:39:41,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:39:41,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:39:41,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:39:41,781 INFO L87 Difference]: Start difference. First operand 2353 states and 3985 transitions. Second operand 6 states. [2020-10-29 05:39:42,261 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:40:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:40:08,402 INFO L93 Difference]: Finished difference Result 5793 states and 10046 transitions. [2020-10-29 05:40:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:40:08,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 997 [2020-10-29 05:40:08,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:40:08,428 INFO L225 Difference]: With dead ends: 5793 [2020-10-29 05:40:08,428 INFO L226 Difference]: Without dead ends: 3446 [2020-10-29 05:40:08,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:40:08,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2020-10-29 05:40:08,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 3398. [2020-10-29 05:40:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3398 states. [2020-10-29 05:40:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 5927 transitions. [2020-10-29 05:40:08,542 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 5927 transitions. Word has length 997 [2020-10-29 05:40:08,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:40:08,544 INFO L481 AbstractCegarLoop]: Abstraction has 3398 states and 5927 transitions. [2020-10-29 05:40:08,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:40:08,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 5927 transitions. [2020-10-29 05:40:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2020-10-29 05:40:08,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:40:08,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:40:08,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:40:08,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:40:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:40:08,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1645725570, now seen corresponding path program 1 times [2020-10-29 05:40:08,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:40:08,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954794046] [2020-10-29 05:40:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:40:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:08,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:13,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:13,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-29 05:40:13,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:40:13,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-29 05:40:13,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:13,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 05:40:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:40:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1009 [2020-10-29 05:40:13,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:15,205 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:40:15,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:40:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:15,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:15,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:40:15,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:40:15,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:15,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:40:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:40:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:40:15,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:15,429 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:40:15,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:40:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:15,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:15,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:15,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:40:15,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:40:15,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 05:40:15,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:15,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:40:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:40:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:40:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 05:40:16,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954794046] [2020-10-29 05:40:16,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:40:16,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:40:16,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380057771] [2020-10-29 05:40:16,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:40:16,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:40:16,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:40:16,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:40:16,620 INFO L87 Difference]: Start difference. First operand 3398 states and 5927 transitions. Second operand 6 states. [2020-10-29 05:40:17,107 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:40:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:40:44,310 INFO L93 Difference]: Finished difference Result 9982 states and 17645 transitions. [2020-10-29 05:40:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 05:40:44,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 998 [2020-10-29 05:40:44,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:40:44,352 INFO L225 Difference]: With dead ends: 9982 [2020-10-29 05:40:44,353 INFO L226 Difference]: Without dead ends: 6590 [2020-10-29 05:40:44,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:40:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2020-10-29 05:40:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6571. [2020-10-29 05:40:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6571 states. [2020-10-29 05:40:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 10753 transitions. [2020-10-29 05:40:44,554 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 10753 transitions. Word has length 998 [2020-10-29 05:40:44,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:40:44,556 INFO L481 AbstractCegarLoop]: Abstraction has 6571 states and 10753 transitions. [2020-10-29 05:40:44,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:40:44,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 10753 transitions. [2020-10-29 05:40:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-29 05:40:44,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:40:44,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:40:44,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:40:44,588 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:40:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:40:44,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1568943243, now seen corresponding path program 1 times [2020-10-29 05:40:44,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:40:44,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416088003] [2020-10-29 05:40:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:40:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:49,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:49,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-29 05:40:49,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:40:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-29 05:40:49,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:49,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:40:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:40:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 996 [2020-10-29 05:40:49,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:50,805 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:40:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:40:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:50,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:50,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:40:50,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:40:50,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:50,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:40:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:40:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:40:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:51,022 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:40:51,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:40:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:51,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:51,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:40:51,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:40:51,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:51,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:40:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:40:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:40:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:40:52,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416088003] [2020-10-29 05:40:52,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:40:52,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:40:52,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699238620] [2020-10-29 05:40:52,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:40:52,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:40:52,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:40:52,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:40:52,048 INFO L87 Difference]: Start difference. First operand 6571 states and 10753 transitions. Second operand 5 states. [2020-10-29 05:40:52,602 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:41:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:41:20,376 INFO L93 Difference]: Finished difference Result 19444 states and 32524 transitions. [2020-10-29 05:41:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:41:20,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1005 [2020-10-29 05:41:20,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:41:20,446 INFO L225 Difference]: With dead ends: 19444 [2020-10-29 05:41:20,446 INFO L226 Difference]: Without dead ends: 12879 [2020-10-29 05:41:20,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:41:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12879 states. [2020-10-29 05:41:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12879 to 12827. [2020-10-29 05:41:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12827 states. [2020-10-29 05:41:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 20281 transitions. [2020-10-29 05:41:20,845 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 20281 transitions. Word has length 1005 [2020-10-29 05:41:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:41:20,847 INFO L481 AbstractCegarLoop]: Abstraction has 12827 states and 20281 transitions. [2020-10-29 05:41:20,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:41:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 20281 transitions. [2020-10-29 05:41:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-29 05:41:20,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:41:20,903 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:41:20,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:41:20,903 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:41:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:41:20,904 INFO L82 PathProgramCache]: Analyzing trace with hash 325760540, now seen corresponding path program 1 times [2020-10-29 05:41:20,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:41:20,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695970468] [2020-10-29 05:41:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:41:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:21,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:23,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:26,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:26,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-29 05:41:26,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:41:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 05:41:26,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:26,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:41:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:41:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:41:26,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:41:26,993 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:41:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:41:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:27,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:27,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:41:27,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:41:27,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:27,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:41:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:41:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:41:27,229 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:41:27,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:41:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:27,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:27,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:41:27,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:41:27,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:27,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:41:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:41:27,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:27,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:41:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:27,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:27,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:27,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:41:27,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 05:41:27,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:27,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:41:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:41:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 05:41:27,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:41:28,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695970468] [2020-10-29 05:41:28,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:41:28,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:41:28,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997064303] [2020-10-29 05:41:28,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:41:28,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:41:28,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:41:28,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:41:28,048 INFO L87 Difference]: Start difference. First operand 12827 states and 20281 transitions. Second operand 7 states. [2020-10-29 05:41:28,589 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:41:30,328 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:41:56,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:41:56,358 INFO L93 Difference]: Finished difference Result 38457 states and 62878 transitions. [2020-10-29 05:41:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:41:56,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1047 [2020-10-29 05:41:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:41:56,462 INFO L225 Difference]: With dead ends: 38457 [2020-10-29 05:41:56,462 INFO L226 Difference]: Without dead ends: 25636 [2020-10-29 05:41:56,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:41:56,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25636 states. [2020-10-29 05:41:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25636 to 25495. [2020-10-29 05:41:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25495 states. [2020-10-29 05:41:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25495 states to 25495 states and 39402 transitions. [2020-10-29 05:41:57,226 INFO L78 Accepts]: Start accepts. Automaton has 25495 states and 39402 transitions. Word has length 1047 [2020-10-29 05:41:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:41:57,226 INFO L481 AbstractCegarLoop]: Abstraction has 25495 states and 39402 transitions. [2020-10-29 05:41:57,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:41:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 25495 states and 39402 transitions. [2020-10-29 05:41:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2020-10-29 05:41:57,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:41:57,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:41:57,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:41:57,311 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:41:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:41:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1468756564, now seen corresponding path program 1 times [2020-10-29 05:41:57,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:41:57,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759150412] [2020-10-29 05:41:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:41:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:58,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:02,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:02,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-29 05:42:02,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:42:02,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-29 05:42:02,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:02,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:42:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:42:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 05:42:02,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:03,246 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:42:03,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:42:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:03,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:03,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:03,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:42:03,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:42:03,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:03,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:42:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:42:03,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:03,545 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:42:03,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:42:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:03,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:03,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:42:03,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:42:03,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:03,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:42:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:42:03,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 05:42:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:03,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:03,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:42:03,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:03,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 05:42:03,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:03,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:42:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:42:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 05:42:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:42:04,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759150412] [2020-10-29 05:42:04,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:42:04,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:42:04,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772427760] [2020-10-29 05:42:04,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:42:04,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:42:04,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:42:04,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:42:04,359 INFO L87 Difference]: Start difference. First operand 25495 states and 39402 transitions. Second operand 7 states. [2020-10-29 05:42:05,054 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:42:05,757 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 159