/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:43,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:43,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:43,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:43,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:43,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:43,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:43,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:43,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:43,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:43,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:43,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:43,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:43,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:43,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:43,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:43,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:43,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:43,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:43,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:43,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:43,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:43,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:43,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:43,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:43,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:43,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:43,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:43,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:43,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:43,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:43,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:43,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:43,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:43,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:43,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:43,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:43,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:43,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:43,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:43,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:43,518 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 [2020-09-24 21:44:43,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:43,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:43,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:43,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:43,586 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:43,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:43,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:43,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:43,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:43,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:43,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:43,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:43,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:43,589 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:43,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:43,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:43,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:43,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:43,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:43,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:43,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:43,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:43,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:43,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:43,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:43,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:43,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:43,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:43,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:43,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:44,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:44,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:44,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:44,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:44,151 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:44,152 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-24 21:44:44,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc804621f/9d339c8c436f42509e0196ba238f1b48/FLAG2bda0bcd8 [2020-09-24 21:44:44,904 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:44,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-24 21:44:44,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc804621f/9d339c8c436f42509e0196ba238f1b48/FLAG2bda0bcd8 [2020-09-24 21:44:45,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc804621f/9d339c8c436f42509e0196ba238f1b48 [2020-09-24 21:44:45,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:45,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:45,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:45,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:45,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:45,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:45" (1/1) ... [2020-09-24 21:44:45,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f6d7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:45, skipping insertion in model container [2020-09-24 21:44:45,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:45" (1/1) ... [2020-09-24 21:44:45,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:45,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:45,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:45,831 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:46,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:46,077 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:46,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46 WrapperNode [2020-09-24 21:44:46,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:46,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:46,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:46,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:46,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:46,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:46,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:46,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:46,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (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 [2020-09-24 21:44:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:47,833 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:47,834 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:47,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:47 BoogieIcfgContainer [2020-09-24 21:44:47,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:47,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:47,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:47,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:47,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:45" (1/3) ... [2020-09-24 21:44:47,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc8ab42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:47, skipping insertion in model container [2020-09-24 21:44:47,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (2/3) ... [2020-09-24 21:44:47,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc8ab42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:47, skipping insertion in model container [2020-09-24 21:44:47,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:47" (3/3) ... [2020-09-24 21:44:47,854 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label13.c [2020-09-24 21:44:47,867 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:47,880 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:47,907 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:47,956 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:47,957 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:47,957 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:47,957 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:47,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:47,958 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:47,958 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:47,958 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:48,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 21:44:48,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:48,029 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] [2020-09-24 21:44:48,030 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:48,040 INFO L82 PathProgramCache]: Analyzing trace with hash -538548697, now seen corresponding path program 1 times [2020-09-24 21:44:48,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:48,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304833674] [2020-09-24 21:44:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:48,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:49,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:49,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:44:49,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-09-24 21:44:49,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 21:44:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:49,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:49,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:49,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:49,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:49,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:44:49,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:49,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304833674] [2020-09-24 21:44:49,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:49,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:44:49,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216825157] [2020-09-24 21:44:49,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:44:49,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:49,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:44:49,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:49,713 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 21:44:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:52,501 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-24 21:44:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:44:52,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-09-24 21:44:52,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:52,556 INFO L225 Difference]: With dead ends: 1352 [2020-09-24 21:44:52,556 INFO L226 Difference]: Without dead ends: 806 [2020-09-24 21:44:52,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:44:52,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-24 21:44:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-24 21:44:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-24 21:44:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-24 21:44:52,704 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 74 [2020-09-24 21:44:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:52,706 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-24 21:44:52,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:44:52,706 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-24 21:44:52,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 21:44:52,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:52,730 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:52,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:52,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:52,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:52,734 INFO L82 PathProgramCache]: Analyzing trace with hash 607028325, now seen corresponding path program 1 times [2020-09-24 21:44:52,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:52,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114946277] [2020-09-24 21:44:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:57,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 21:44:57,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:44:57,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 21:44:57,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:44:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-24 21:44:57,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:57,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:57,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:44:57,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:44:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:57,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:58,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:58,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:44:58,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-24 21:44:58,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:44:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:58,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114946277] [2020-09-24 21:44:58,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:58,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:58,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764943999] [2020-09-24 21:44:58,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:58,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:58,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:58,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:58,630 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 9 states. [2020-09-24 21:45:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:01,643 INFO L93 Difference]: Finished difference Result 1804 states and 2293 transitions. [2020-09-24 21:45:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:01,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2020-09-24 21:45:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:01,653 INFO L225 Difference]: With dead ends: 1804 [2020-09-24 21:45:01,654 INFO L226 Difference]: Without dead ends: 1092 [2020-09-24 21:45:01,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:45:01,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2020-09-24 21:45:01,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 878. [2020-09-24 21:45:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-24 21:45:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1102 transitions. [2020-09-24 21:45:01,733 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1102 transitions. Word has length 157 [2020-09-24 21:45:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:01,736 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1102 transitions. [2020-09-24 21:45:01,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1102 transitions. [2020-09-24 21:45:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-24 21:45:01,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:01,757 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:01,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:01,758 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:01,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:01,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1709165424, now seen corresponding path program 1 times [2020-09-24 21:45:01,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:01,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948565694] [2020-09-24 21:45:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:06,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-09-24 21:45:06,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:45:06,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-24 21:45:06,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:45:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:45:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-24 21:45:06,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:07,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:07,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:07,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:45:07,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:07,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:07,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:07,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:07,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 21:45:07,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:45:07,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:07,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:07,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:45:07,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-09-24 21:45:07,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:07,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:07,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:45:07,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:45:08,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948565694] [2020-09-24 21:45:08,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:08,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:08,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633190773] [2020-09-24 21:45:08,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:08,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:08,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:08,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:08,167 INFO L87 Difference]: Start difference. First operand 878 states and 1102 transitions. Second operand 9 states. [2020-09-24 21:45:11,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:11,512 INFO L93 Difference]: Finished difference Result 2115 states and 2771 transitions. [2020-09-24 21:45:11,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:45:11,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 282 [2020-09-24 21:45:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:11,523 INFO L225 Difference]: With dead ends: 2115 [2020-09-24 21:45:11,524 INFO L226 Difference]: Without dead ends: 1378 [2020-09-24 21:45:11,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-09-24 21:45:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1334. [2020-09-24 21:45:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-09-24 21:45:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1646 transitions. [2020-09-24 21:45:11,574 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1646 transitions. Word has length 282 [2020-09-24 21:45:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:11,575 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 1646 transitions. [2020-09-24 21:45:11,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1646 transitions. [2020-09-24 21:45:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-09-24 21:45:11,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:11,582 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:11,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:11,583 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash -98335448, now seen corresponding path program 1 times [2020-09-24 21:45:11,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:11,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179003751] [2020-09-24 21:45:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:11,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:16,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:16,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-09-24 21:45:16,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:16,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 21:45:16,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-24 21:45:16,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:16,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:16,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:16,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:16,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:45:16,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:16,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:16,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:16,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:16,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:16,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 21:45:16,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:16,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:17,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:17,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-24 21:45:17,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:45:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:17,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179003751] [2020-09-24 21:45:17,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:17,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:17,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560023130] [2020-09-24 21:45:17,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:17,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:17,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:17,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:17,617 INFO L87 Difference]: Start difference. First operand 1334 states and 1646 transitions. Second operand 10 states. [2020-09-24 21:45:21,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:21,821 INFO L93 Difference]: Finished difference Result 2981 states and 3839 transitions. [2020-09-24 21:45:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 21:45:21,822 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 298 [2020-09-24 21:45:21,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:21,835 INFO L225 Difference]: With dead ends: 2981 [2020-09-24 21:45:21,835 INFO L226 Difference]: Without dead ends: 1812 [2020-09-24 21:45:21,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:45:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-24 21:45:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1708. [2020-09-24 21:45:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1708 states. [2020-09-24 21:45:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2180 transitions. [2020-09-24 21:45:21,919 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2180 transitions. Word has length 298 [2020-09-24 21:45:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:21,920 INFO L479 AbstractCegarLoop]: Abstraction has 1708 states and 2180 transitions. [2020-09-24 21:45:21,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:45:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2180 transitions. [2020-09-24 21:45:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-09-24 21:45:21,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:21,931 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, 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] [2020-09-24 21:45:21,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:21,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:21,932 INFO L82 PathProgramCache]: Analyzing trace with hash 594797102, now seen corresponding path program 1 times [2020-09-24 21:45:21,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:21,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124522828] [2020-09-24 21:45:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:26,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:27,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-09-24 21:45:27,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-24 21:45:27,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 21:45:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:27,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:27,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:45:27,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:27,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:27,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 21:45:27,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 21:45:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 21:45:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 21:45:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:27,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:27,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 21:45:27,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:45:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 21:45:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:45:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 116 proven. 90 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 21:45:27,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124522828] [2020-09-24 21:45:27,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:27,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:45:27,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036945024] [2020-09-24 21:45:27,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:27,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:27,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:27,716 INFO L87 Difference]: Start difference. First operand 1708 states and 2180 transitions. Second operand 7 states. [2020-09-24 21:45:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:29,843 INFO L93 Difference]: Finished difference Result 4221 states and 5698 transitions. [2020-09-24 21:45:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:45:29,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-09-24 21:45:29,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:29,860 INFO L225 Difference]: With dead ends: 4221 [2020-09-24 21:45:29,860 INFO L226 Difference]: Without dead ends: 2678 [2020-09-24 21:45:29,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:45:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2020-09-24 21:45:29,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2666. [2020-09-24 21:45:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2666 states. [2020-09-24 21:45:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3524 transitions. [2020-09-24 21:45:29,961 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3524 transitions. Word has length 314 [2020-09-24 21:45:29,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:29,962 INFO L479 AbstractCegarLoop]: Abstraction has 2666 states and 3524 transitions. [2020-09-24 21:45:29,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3524 transitions. [2020-09-24 21:45:29,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-09-24 21:45:29,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:29,980 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, 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, 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] [2020-09-24 21:45:29,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:29,980 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:29,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:29,981 INFO L82 PathProgramCache]: Analyzing trace with hash -209275432, now seen corresponding path program 1 times [2020-09-24 21:45:29,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:29,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23391026] [2020-09-24 21:45:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:30,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking...