/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=SMALLEST --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/Problem02_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:42,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:42,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:42,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:42,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:42,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:42,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:42,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:42,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:42,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:42,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:42,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:42,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:42,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:42,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:42,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:42,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:42,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:42,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:42,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:42,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:42,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:42,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:42,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:42,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:42,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:42,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:42,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:42,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:42,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:42,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:42,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:42,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:42,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:42,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:42,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:42,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:42,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:42,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:42,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:42,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:42,552 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 18:21:42,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:42,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:42,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:42,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:42,580 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:42,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:42,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:42,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:42,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:42,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:42,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:42,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:42,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:42,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:42,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:42,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:42,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:42,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:42,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:42,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:42,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:42,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:42,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:42,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:42,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:42,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:42,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:42,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:42,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:42,585 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:21:43,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:43,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:43,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:43,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:43,135 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:43,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-24 18:21:43,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f51705659/2937eb2cf5894b15ade8a1d169dee4f0/FLAG62e851c53 [2020-09-24 18:21:43,831 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:43,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-24 18:21:43,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f51705659/2937eb2cf5894b15ade8a1d169dee4f0/FLAG62e851c53 [2020-09-24 18:21:44,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f51705659/2937eb2cf5894b15ade8a1d169dee4f0 [2020-09-24 18:21:44,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:44,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:44,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:44,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:44,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:44,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:44" (1/1) ... [2020-09-24 18:21:44,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249e641f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44, skipping insertion in model container [2020-09-24 18:21:44,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:44" (1/1) ... [2020-09-24 18:21:44,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:44,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:44,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:44,687 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:44,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:44,956 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:44,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44 WrapperNode [2020-09-24 18:21:44,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:44,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:44,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:44,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:44,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44" (1/1) ... [2020-09-24 18:21:44,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44" (1/1) ... [2020-09-24 18:21:45,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44" (1/1) ... [2020-09-24 18:21:45,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44" (1/1) ... [2020-09-24 18:21:45,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44" (1/1) ... [2020-09-24 18:21:45,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44" (1/1) ... [2020-09-24 18:21:45,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44" (1/1) ... [2020-09-24 18:21:45,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:45,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:45,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:45,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:45,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44" (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 18:21:45,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:45,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:45,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:45,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:46,509 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:46,509 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:46,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:46 BoogieIcfgContainer [2020-09-24 18:21:46,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:46,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:46,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:46,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:46,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:44" (1/3) ... [2020-09-24 18:21:46,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6865ff13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:46, skipping insertion in model container [2020-09-24 18:21:46,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:44" (2/3) ... [2020-09-24 18:21:46,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6865ff13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:46, skipping insertion in model container [2020-09-24 18:21:46,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:46" (3/3) ... [2020-09-24 18:21:46,531 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label14.c [2020-09-24 18:21:46,544 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:46,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:46,583 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:46,622 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:46,623 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:46,623 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:46,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:46,624 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:46,624 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:46,624 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:46,624 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:46,666 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 18:21:46,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:46,701 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] [2020-09-24 18:21:46,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:46,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:46,709 INFO L82 PathProgramCache]: Analyzing trace with hash 569136050, now seen corresponding path program 1 times [2020-09-24 18:21:46,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:46,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286997687] [2020-09-24 18:21:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:47,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:52,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:52,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 18:21:52,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 18:21:52,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:21:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 18:21:52,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:21:52,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:52,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:52,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:52,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:52,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 18:21:52,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:52,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:21:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:52,421 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 18:21:52,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286997687] [2020-09-24 18:21:52,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:52,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:52,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871602633] [2020-09-24 18:21:52,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:52,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:52,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:52,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:52,458 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:21:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:54,560 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-24 18:21:54,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:54,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 18:21:54,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:54,591 INFO L225 Difference]: With dead ends: 1205 [2020-09-24 18:21:54,591 INFO L226 Difference]: Without dead ends: 627 [2020-09-24 18:21:54,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-24 18:21:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-24 18:21:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-24 18:21:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-24 18:21:54,700 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 143 [2020-09-24 18:21:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:54,702 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-24 18:21:54,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-24 18:21:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 18:21:54,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:54,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:54,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:54,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:54,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:54,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1046453143, now seen corresponding path program 1 times [2020-09-24 18:21:54,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:54,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433855056] [2020-09-24 18:21:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:55,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:59,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:59,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 18:21:59,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:21:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:21:59,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:59,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:21:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:21:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:59,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:59,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:59,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:59,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:21:59,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:21:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:59,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:59,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:59,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:21:59,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:59,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 18:21:59,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:21:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:00,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433855056] [2020-09-24 18:22:00,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:00,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:22:00,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738790476] [2020-09-24 18:22:00,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:22:00,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:00,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:22:00,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:22:00,092 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 8 states. [2020-09-24 18:22:03,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:03,397 INFO L93 Difference]: Finished difference Result 1894 states and 2515 transitions. [2020-09-24 18:22:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:22:03,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 177 [2020-09-24 18:22:03,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:03,410 INFO L225 Difference]: With dead ends: 1894 [2020-09-24 18:22:03,410 INFO L226 Difference]: Without dead ends: 1303 [2020-09-24 18:22:03,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:22:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2020-09-24 18:22:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1240. [2020-09-24 18:22:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-09-24 18:22:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1562 transitions. [2020-09-24 18:22:03,486 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1562 transitions. Word has length 177 [2020-09-24 18:22:03,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:03,486 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1562 transitions. [2020-09-24 18:22:03,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:22:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1562 transitions. [2020-09-24 18:22:03,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 18:22:03,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:03,493 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:03,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:22:03,493 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:03,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:03,494 INFO L82 PathProgramCache]: Analyzing trace with hash 551155189, now seen corresponding path program 1 times [2020-09-24 18:22:03,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:03,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075799115] [2020-09-24 18:22:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:07,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:07,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 18:22:07,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:22:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4309 [2020-09-24 18:22:07,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 18:22:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:22:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:08,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:08,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:08,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:22:08,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:08,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:08,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:22:08,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:08,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:22:08,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:08,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:08,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:22:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:08,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:08,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:22:08,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:08,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:22:08,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:22:08,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 83 [2020-09-24 18:22:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 18:22:08,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075799115] [2020-09-24 18:22:08,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:08,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:22:08,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910367888] [2020-09-24 18:22:08,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:22:08,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:08,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:22:08,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:08,302 INFO L87 Difference]: Start difference. First operand 1240 states and 1562 transitions. Second operand 6 states. [2020-09-24 18:22:11,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:11,093 INFO L93 Difference]: Finished difference Result 3113 states and 4092 transitions. [2020-09-24 18:22:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:22:11,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2020-09-24 18:22:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:11,111 INFO L225 Difference]: With dead ends: 3113 [2020-09-24 18:22:11,111 INFO L226 Difference]: Without dead ends: 1895 [2020-09-24 18:22:11,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:22:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-09-24 18:22:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1704. [2020-09-24 18:22:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-09-24 18:22:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2069 transitions. [2020-09-24 18:22:11,196 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2069 transitions. Word has length 199 [2020-09-24 18:22:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:11,198 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2069 transitions. [2020-09-24 18:22:11,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:22:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2069 transitions. [2020-09-24 18:22:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-24 18:22:11,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:11,208 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, 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] [2020-09-24 18:22:11,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:22:11,209 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:11,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:11,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1401169933, now seen corresponding path program 1 times [2020-09-24 18:22:11,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:11,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050226382] [2020-09-24 18:22:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:11,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:16,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-24 18:22:16,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:22:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:22:16,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-24 18:22:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:22:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:16,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:16,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:16,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:22:16,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:16,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:16,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:16,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:22:16,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:16,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:22:16,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:22:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 18:22:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:16,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:16,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:22:16,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 18:22:16,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:22:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:22:16,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050226382] [2020-09-24 18:22:16,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:16,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:16,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463565731] [2020-09-24 18:22:16,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:16,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:16,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:16,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:16,657 INFO L87 Difference]: Start difference. First operand 1704 states and 2069 transitions. Second operand 7 states. [2020-09-24 18:22:18,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:18,920 INFO L93 Difference]: Finished difference Result 4389 states and 5502 transitions. [2020-09-24 18:22:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:22:18,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-24 18:22:18,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:18,937 INFO L225 Difference]: With dead ends: 4389 [2020-09-24 18:22:18,937 INFO L226 Difference]: Without dead ends: 2330 [2020-09-24 18:22:18,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:22:18,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2020-09-24 18:22:19,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2120. [2020-09-24 18:22:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2120 states. [2020-09-24 18:22:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 2439 transitions. [2020-09-24 18:22:19,033 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 2439 transitions. Word has length 226 [2020-09-24 18:22:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:19,034 INFO L479 AbstractCegarLoop]: Abstraction has 2120 states and 2439 transitions. [2020-09-24 18:22:19,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:19,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 2439 transitions. [2020-09-24 18:22:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-24 18:22:19,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:19,047 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:22:19,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:22:19,048 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:19,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:19,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1061696171, now seen corresponding path program 1 times [2020-09-24 18:22:19,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:19,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573379201] [2020-09-24 18:22:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:22,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:22,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-24 18:22:22,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:22:22,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3570 [2020-09-24 18:22:22,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-09-24 18:22:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 18:22:22,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:22,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:22,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:22,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:22,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:22,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:22:22,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:22:22,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:22,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:22:22,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:22:22,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:22,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:22:22,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 18:22:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:23,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:23,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:22:23,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:23,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 18:22:23,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:22:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 18:22:23,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573379201] [2020-09-24 18:22:23,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:23,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:23,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189565049] [2020-09-24 18:22:23,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:23,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:23,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:23,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:23,297 INFO L87 Difference]: Start difference. First operand 2120 states and 2439 transitions. Second operand 5 states. [2020-09-24 18:22:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:25,282 INFO L93 Difference]: Finished difference Result 5356 states and 6244 transitions. [2020-09-24 18:22:25,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:25,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-09-24 18:22:25,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:25,302 INFO L225 Difference]: With dead ends: 5356 [2020-09-24 18:22:25,302 INFO L226 Difference]: Without dead ends: 3083 [2020-09-24 18:22:25,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:25,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2020-09-24 18:22:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 3013. [2020-09-24 18:22:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2020-09-24 18:22:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3440 transitions. [2020-09-24 18:22:25,391 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3440 transitions. Word has length 270 [2020-09-24 18:22:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:25,392 INFO L479 AbstractCegarLoop]: Abstraction has 3013 states and 3440 transitions. [2020-09-24 18:22:25,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3440 transitions. [2020-09-24 18:22:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-09-24 18:22:25,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:25,405 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:25,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:22:25,405 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:25,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1284997402, now seen corresponding path program 1 times [2020-09-24 18:22:25,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:25,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781790319] [2020-09-24 18:22:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:30,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-09-24 18:22:30,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:22:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-24 18:22:30,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-09-24 18:22:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 18:22:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:30,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:30,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:30,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:30,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:22:30,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:30,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:22:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:22:30,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:30,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:22:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:30,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:22:30,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:22:30,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:30,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:30,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 18:22:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:30,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 18:22:30,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:30,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:22:30,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:30,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 18:22:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:30,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:22:30,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:30,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 18:22:30,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 18:22:30,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:22:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 155 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-09-24 18:22:30,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781790319] [2020-09-24 18:22:30,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:30,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:30,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774125845] [2020-09-24 18:22:30,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:30,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:30,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:30,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:30,930 INFO L87 Difference]: Start difference. First operand 3013 states and 3440 transitions. Second operand 5 states.