/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:01:26,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:26,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:26,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:26,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:26,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:26,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:26,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:26,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:26,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:26,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:26,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:26,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:26,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:26,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:26,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:26,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:26,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:26,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:26,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:26,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:26,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:26,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:26,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:26,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:26,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:26,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:26,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:26,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:26,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:26,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:26,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:26,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:26,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:26,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:26,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:26,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:26,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:26,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:26,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:26,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:26,456 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 16:01:26,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:26,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:26,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:26,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:26,489 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:26,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:26,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:26,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:26,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:26,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:26,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:26,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:26,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:26,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:26,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:26,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:26,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:26,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:26,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:26,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:26,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:26,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:26,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:26,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:26,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:26,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:26,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:26,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:26,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:26,496 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:01:27,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:27,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:27,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:27,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:27,040 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:27,041 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-24 16:01:27,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73448d11c/3da12873b94f47e4a0ed5ad3150a9d1c/FLAGfb0071a44 [2020-09-24 16:01:27,699 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:27,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-24 16:01:27,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73448d11c/3da12873b94f47e4a0ed5ad3150a9d1c/FLAGfb0071a44 [2020-09-24 16:01:28,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73448d11c/3da12873b94f47e4a0ed5ad3150a9d1c [2020-09-24 16:01:28,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:28,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:28,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:28,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:28,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:28,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:28" (1/1) ... [2020-09-24 16:01:28,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8bb1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28, skipping insertion in model container [2020-09-24 16:01:28,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:28" (1/1) ... [2020-09-24 16:01:28,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:28,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:28,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:28,368 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:28,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:28,408 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:28,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28 WrapperNode [2020-09-24 16:01:28,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:28,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:28,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:28,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:28,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28" (1/1) ... [2020-09-24 16:01:28,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28" (1/1) ... [2020-09-24 16:01:28,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28" (1/1) ... [2020-09-24 16:01:28,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28" (1/1) ... [2020-09-24 16:01:28,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28" (1/1) ... [2020-09-24 16:01:28,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28" (1/1) ... [2020-09-24 16:01:28,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28" (1/1) ... [2020-09-24 16:01:28,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:28,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:28,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:28,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:28,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28" (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 16:01:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-24 16:01:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-09-24 16:01:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 16:01:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 16:01:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 16:01:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:01:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-09-24 16:01:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 16:01:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:01:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:01:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:01:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:01:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:01:29,057 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:01:29,057 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:01:29,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:29 BoogieIcfgContainer [2020-09-24 16:01:29,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:01:29,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:01:29,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:01:29,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:01:29,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:28" (1/3) ... [2020-09-24 16:01:29,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f609fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:29, skipping insertion in model container [2020-09-24 16:01:29,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:28" (2/3) ... [2020-09-24 16:01:29,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f609fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:29, skipping insertion in model container [2020-09-24 16:01:29,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:29" (3/3) ... [2020-09-24 16:01:29,072 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-09-24 16:01:29,084 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:01:29,096 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:01:29,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:01:29,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:01:29,151 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:01:29,151 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:01:29,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:01:29,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:01:29,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:01:29,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:01:29,152 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:01:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-24 16:01:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 16:01:29,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:29,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:29,186 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash 2026025413, now seen corresponding path program 1 times [2020-09-24 16:01:29,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:29,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439928352] [2020-09-24 16:01:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:29,426 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:29,426 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:29,427 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:29,427 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:29,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 16:01:29,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:29,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:01:29,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-24 16:01:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:29,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:29,563 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:29,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:29,564 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:29,564 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:29,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:01:29,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:29,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 16:01:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:29,626 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:29,627 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:29,627 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:29,627 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:29,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 16:01:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:01:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:29,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 16:01:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:29,664 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:29,664 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:29,665 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:29,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:29,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:29,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:29,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:29,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:29,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 16:01:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:29,677 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:29,678 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:29,678 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:29,678 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:29,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:29,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:29,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:29,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:29,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 16:01:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:29,690 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:29,690 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:29,690 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:29,691 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:29,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:29,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:29,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:29,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:29,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 16:01:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:29,710 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:29,711 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:29,711 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:29,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:29,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:29,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:29,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:29,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-24 16:01:29,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439928352] [2020-09-24 16:01:29,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:29,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:01:29,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271543188] [2020-09-24 16:01:29,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:01:29,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:29,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:01:29,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:01:29,770 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-09-24 16:01:30,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:30,103 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2020-09-24 16:01:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:01:30,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-09-24 16:01:30,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:30,119 INFO L225 Difference]: With dead ends: 107 [2020-09-24 16:01:30,119 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 16:01:30,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:01:30,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 16:01:30,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-24 16:01:30,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-24 16:01:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-09-24 16:01:30,190 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 83 [2020-09-24 16:01:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:30,193 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-09-24 16:01:30,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:01:30,194 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-09-24 16:01:30,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 16:01:30,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:30,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:30,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:01:30,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:30,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:30,200 INFO L82 PathProgramCache]: Analyzing trace with hash 177245466, now seen corresponding path program 1 times [2020-09-24 16:01:30,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:30,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893407512] [2020-09-24 16:01:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,283 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,283 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,284 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 16:01:30,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:01:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 16:01:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:01:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:30,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,393 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:01:30,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:01:30,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 16:01:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,423 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,423 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,423 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,423 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 16:01:30,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:30,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 16:01:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,439 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,439 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,441 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:30,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:30,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 16:01:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,458 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,458 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,459 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,459 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:30,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:30,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:30,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 16:01:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,476 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,476 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,476 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:30,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:30,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 16:01:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,494 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,495 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,495 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,495 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:30,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:30,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-24 16:01:30,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893407512] [2020-09-24 16:01:30,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:30,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:01:30,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216383043] [2020-09-24 16:01:30,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:01:30,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:30,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:01:30,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:01:30,512 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 5 states. [2020-09-24 16:01:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:30,773 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-09-24 16:01:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:01:30,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-24 16:01:30,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:30,776 INFO L225 Difference]: With dead ends: 106 [2020-09-24 16:01:30,777 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 16:01:30,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:01:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 16:01:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-24 16:01:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-24 16:01:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-09-24 16:01:30,791 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 85 [2020-09-24 16:01:30,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:30,792 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-09-24 16:01:30,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:01:30,792 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-09-24 16:01:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 16:01:30,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:30,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:30,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:01:30,796 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:30,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:30,796 INFO L82 PathProgramCache]: Analyzing trace with hash 679818391, now seen corresponding path program 1 times [2020-09-24 16:01:30,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:30,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713478389] [2020-09-24 16:01:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,883 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,883 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,884 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,884 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 16:01:30,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 16:01:30,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 16:01:30,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 16:01:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 16:01:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,090 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,091 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:01:31,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:31,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 16:01:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,118 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,118 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,118 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,118 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 16:01:31,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:31,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 16:01:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,133 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,133 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,134 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,134 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:31,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:01:31,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:01:31,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 16:01:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,189 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,189 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,190 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,190 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:31,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:31,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:01:31,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 16:01:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,204 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,205 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,205 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,206 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:31,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:01:31,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:01:31,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:01:31,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 16:01:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,218 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,218 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,218 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:31,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:31,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:01:31,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713478389] [2020-09-24 16:01:31,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:31,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 16:01:31,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995382750] [2020-09-24 16:01:31,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:01:31,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:31,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:01:31,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:01:31,239 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 14 states. [2020-09-24 16:01:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:32,812 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2020-09-24 16:01:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 16:01:32,812 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-09-24 16:01:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:32,817 INFO L225 Difference]: With dead ends: 167 [2020-09-24 16:01:32,818 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 16:01:32,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-09-24 16:01:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 16:01:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 108. [2020-09-24 16:01:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 16:01:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2020-09-24 16:01:32,846 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 87 [2020-09-24 16:01:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:32,847 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2020-09-24 16:01:32,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:01:32,847 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2020-09-24 16:01:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 16:01:32,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:32,850 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-09-24 16:01:32,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:01:32,850 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:32,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:32,851 INFO L82 PathProgramCache]: Analyzing trace with hash -2022406921, now seen corresponding path program 1 times [2020-09-24 16:01:32,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:32,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316610790] [2020-09-24 16:01:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:01:32,891 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:01:32,892 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:01:32,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:01:32,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:01:32 BoogieIcfgContainer [2020-09-24 16:01:32,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:01:32,926 INFO L168 Benchmark]: Toolchain (without parser) took 4884.82 ms. Allocated memory was 141.6 MB in the beginning and 278.4 MB in the end (delta: 136.8 MB). Free memory was 104.6 MB in the beginning and 219.5 MB in the end (delta: -114.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,927 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:01:32,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.63 ms. Allocated memory is still 141.6 MB. Free memory was 103.9 MB in the beginning and 93.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,929 INFO L168 Benchmark]: Boogie Preprocessor took 149.42 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.6 MB in the beginning and 181.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,930 INFO L168 Benchmark]: RCFGBuilder took 503.11 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 159.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,931 INFO L168 Benchmark]: TraceAbstraction took 3857.74 ms. Allocated memory was 203.9 MB in the beginning and 278.4 MB in the end (delta: 74.4 MB). Free memory was 158.3 MB in the beginning and 219.5 MB in the end (delta: -61.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.63 ms. Allocated memory is still 141.6 MB. Free memory was 103.9 MB in the beginning and 93.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.42 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.6 MB in the beginning and 181.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.11 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 159.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3857.74 ms. Allocated memory was 203.9 MB in the beginning and 278.4 MB in the end (delta: 74.4 MB). Free memory was 158.3 MB in the beginning and 219.5 MB in the end (delta: -61.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; [L32] CALL init() [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 395 SDslu, 76 SDs, 0 SdLazy, 1267 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 45528 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 58/63 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...