/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:01:25,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:01:25,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:01:25,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:01:25,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:01:25,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:01:25,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:01:25,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:01:25,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:01:25,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:01:25,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:01:25,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:01:25,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:01:25,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:01:25,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:01:25,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:01:25,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:01:25,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:01:25,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:01:25,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:01:25,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:01:25,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:01:25,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:01:25,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:01:25,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:01:25,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:01:25,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:01:25,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:01:25,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:01:25,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:01:25,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:01:25,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:01:25,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:01:25,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:01:25,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:01:25,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:01:25,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:01:25,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:01:25,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:01:25,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:01:25,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:01:25,629 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 17:01:25,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:01:25,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:01:25,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:01:25,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:01:25,677 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:01:25,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:01:25,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:01:25,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:01:25,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:01:25,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:01:25,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:01:25,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:01:25,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:01:25,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:01:25,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:01:25,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:01:25,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:01:25,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:01:25,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:01:25,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:01:25,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:01:25,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:01:25,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:01:25,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:01:25,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:01:25,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:01:25,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:01:25,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:01:25,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:01:25,684 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;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;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;log-additional-information=true; [2020-09-24 17:01:26,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:01:26,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:01:26,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:01:26,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:01:26,241 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:01:26,242 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-09-24 17:01:26,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18b040724/29d5f61cd2bf406c912b049bb5c29c46/FLAGb8ca8c207 [2020-09-24 17:01:26,906 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:01:26,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-09-24 17:01:26,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18b040724/29d5f61cd2bf406c912b049bb5c29c46/FLAGb8ca8c207 [2020-09-24 17:01:27,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18b040724/29d5f61cd2bf406c912b049bb5c29c46 [2020-09-24 17:01:27,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:01:27,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:01:27,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:01:27,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:01:27,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:01:27,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:27" (1/1) ... [2020-09-24 17:01:27,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27, skipping insertion in model container [2020-09-24 17:01:27,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:27" (1/1) ... [2020-09-24 17:01:27,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:01:27,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:01:27,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:01:27,526 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:01:27,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:01:27,567 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:01:27,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27 WrapperNode [2020-09-24 17:01:27,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:01:27,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:01:27,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:01:27,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:01:27,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27" (1/1) ... [2020-09-24 17:01:27,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27" (1/1) ... [2020-09-24 17:01:27,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27" (1/1) ... [2020-09-24 17:01:27,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27" (1/1) ... [2020-09-24 17:01:27,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27" (1/1) ... [2020-09-24 17:01:27,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27" (1/1) ... [2020-09-24 17:01:27,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27" (1/1) ... [2020-09-24 17:01:27,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:01:27,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:01:27,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:01:27,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:01:27,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27" (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 17:01:27,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:01:27,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:01:27,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:01:27,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:01:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:01:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 17:01:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:01:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:01:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:01:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:01:28,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:01:28,118 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:01:28,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:28 BoogieIcfgContainer [2020-09-24 17:01:28,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:01:28,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:01:28,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:01:28,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:01:28,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:01:27" (1/3) ... [2020-09-24 17:01:28,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab6eae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:28, skipping insertion in model container [2020-09-24 17:01:28,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:27" (2/3) ... [2020-09-24 17:01:28,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab6eae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:28, skipping insertion in model container [2020-09-24 17:01:28,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:28" (3/3) ... [2020-09-24 17:01:28,133 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-09-24 17:01:28,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:01:28,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:01:28,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:01:28,223 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:01:28,224 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:01:28,224 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:01:28,224 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:01:28,224 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:01:28,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:01:28,225 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:01:28,225 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:01:28,256 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-24 17:01:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 17:01:28,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:28,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:28,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:28,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:28,277 INFO L82 PathProgramCache]: Analyzing trace with hash -7732671, now seen corresponding path program 1 times [2020-09-24 17:01:28,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:28,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418425296] [2020-09-24 17:01:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:28,511 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:28,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:01:28,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 17:01:28,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:01:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:01:28,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:28,545 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:28,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:28,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:28,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:01:28,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:28,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:28,554 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 17:01:28,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418425296] [2020-09-24 17:01:28,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:28,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 17:01:28,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472447838] [2020-09-24 17:01:28,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 17:01:28,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:28,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 17:01:28,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 17:01:28,580 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-09-24 17:01:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:28,609 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2020-09-24 17:01:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 17:01:28,611 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-24 17:01:28,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:28,620 INFO L225 Difference]: With dead ends: 62 [2020-09-24 17:01:28,621 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 17:01:28,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 17:01:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 17:01:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 17:01:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 17:01:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-09-24 17:01:28,679 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 12 [2020-09-24 17:01:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:28,680 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-09-24 17:01:28,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 17:01:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-09-24 17:01:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 17:01:28,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:28,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:28,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:01:28,682 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash -87155477, now seen corresponding path program 1 times [2020-09-24 17:01:28,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:28,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740214098] [2020-09-24 17:01:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:28,812 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:28,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:01:28,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 17:01:28,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:01:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:01:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:01:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:28,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:28,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:28,889 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:28,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:28,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:01:28,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:28,895 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 17:01:28,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740214098] [2020-09-24 17:01:28,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:28,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:01:28,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453441464] [2020-09-24 17:01:28,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:01:28,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:28,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:01:28,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:01:28,900 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 3 states. [2020-09-24 17:01:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:28,970 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-09-24 17:01:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:01:28,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-24 17:01:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:28,972 INFO L225 Difference]: With dead ends: 55 [2020-09-24 17:01:28,973 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 17:01:28,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:01:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 17:01:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-09-24 17:01:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 17:01:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-09-24 17:01:28,985 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 12 [2020-09-24 17:01:28,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:28,986 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-09-24 17:01:28,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:01:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-09-24 17:01:28,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 17:01:28,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:28,988 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] [2020-09-24 17:01:28,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:01:28,989 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:28,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1575516068, now seen corresponding path program 1 times [2020-09-24 17:01:28,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:28,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292650206] [2020-09-24 17:01:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:30,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 17:01:30,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-24 17:01:30,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1507 [2020-09-24 17:01:30,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:30,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:01:30,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:01:30,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 17:01:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:44,055 WARN L193 SmtUtils]: Spent 8.53 s on a formula simplification. DAG size of input: 115 DAG size of output: 27 [2020-09-24 17:01:44,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:01:44,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292650206] [2020-09-24 17:01:44,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:44,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:01:44,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096812457] [2020-09-24 17:01:44,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:01:44,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:44,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:01:44,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=209, Unknown=1, NotChecked=0, Total=240 [2020-09-24 17:01:44,148 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 16 states. [2020-09-24 17:01:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:48,506 INFO L93 Difference]: Finished difference Result 298 states and 403 transitions. [2020-09-24 17:01:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 17:01:48,507 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2020-09-24 17:01:48,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:48,514 INFO L225 Difference]: With dead ends: 298 [2020-09-24 17:01:48,515 INFO L226 Difference]: Without dead ends: 257 [2020-09-24 17:01:48,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=34, Invalid=237, Unknown=1, NotChecked=0, Total=272 [2020-09-24 17:01:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-24 17:01:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 199. [2020-09-24 17:01:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-24 17:01:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 250 transitions. [2020-09-24 17:01:48,547 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 250 transitions. Word has length 33 [2020-09-24 17:01:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:48,549 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 250 transitions. [2020-09-24 17:01:48,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:01:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 250 transitions. [2020-09-24 17:01:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 17:01:48,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:48,552 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] [2020-09-24 17:01:48,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:01:48,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:48,553 INFO L82 PathProgramCache]: Analyzing trace with hash 952810492, now seen corresponding path program 1 times [2020-09-24 17:01:48,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:48,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622188352] [2020-09-24 17:01:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,971 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:49,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 17:01:49,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-09-24 17:01:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-09-24 17:01:49,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:01:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 17:01:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 17:01:49,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:50,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:50,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:50,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:01:50,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622188352] [2020-09-24 17:01:50,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:50,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:01:50,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440804560] [2020-09-24 17:01:50,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:01:50,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:50,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:01:50,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:01:50,125 INFO L87 Difference]: Start difference. First operand 199 states and 250 transitions. Second operand 3 states. [2020-09-24 17:01:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:50,243 INFO L93 Difference]: Finished difference Result 305 states and 395 transitions. [2020-09-24 17:01:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:01:50,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-24 17:01:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:50,247 INFO L225 Difference]: With dead ends: 305 [2020-09-24 17:01:50,248 INFO L226 Difference]: Without dead ends: 113 [2020-09-24 17:01:50,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:01:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-24 17:01:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86. [2020-09-24 17:01:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 17:01:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2020-09-24 17:01:50,270 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 33 [2020-09-24 17:01:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:50,271 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2020-09-24 17:01:50,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:01:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2020-09-24 17:01:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 17:01:50,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:50,274 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] [2020-09-24 17:01:50,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:01:50,275 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:50,275 INFO L82 PathProgramCache]: Analyzing trace with hash -243170692, now seen corresponding path program 1 times [2020-09-24 17:01:50,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:50,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749573620] [2020-09-24 17:01:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:51,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:51,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:51,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:52,065 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:52,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 17:01:52,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-09-24 17:01:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1776 [2020-09-24 17:01:52,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:01:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 17:01:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:01:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:52,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:52,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:52,205 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:52,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:52,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:52,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:52,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:52,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:01:52,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749573620] [2020-09-24 17:01:52,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:52,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:01:52,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109767351] [2020-09-24 17:01:52,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:01:52,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:52,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:01:52,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:01:52,218 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand 3 states. [2020-09-24 17:01:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:52,298 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2020-09-24 17:01:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:01:52,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-24 17:01:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:52,299 INFO L225 Difference]: With dead ends: 115 [2020-09-24 17:01:52,300 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 17:01:52,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:01:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 17:01:52,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2020-09-24 17:01:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 17:01:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-09-24 17:01:52,313 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 33 [2020-09-24 17:01:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:52,313 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-09-24 17:01:52,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:01:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-09-24 17:01:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 17:01:52,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:52,316 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] [2020-09-24 17:01:52,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:01:52,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:52,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:52,319 INFO L82 PathProgramCache]: Analyzing trace with hash 132907260, now seen corresponding path program 1 times [2020-09-24 17:01:52,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:52,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590227062] [2020-09-24 17:01:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:01:52,337 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:01:52,337 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:01:52,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:01:52,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:01:52 BoogieIcfgContainer [2020-09-24 17:01:52,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:01:52,376 INFO L168 Benchmark]: Toolchain (without parser) took 25132.12 ms. Allocated memory was 148.9 MB in the beginning and 296.2 MB in the end (delta: 147.3 MB). Free memory was 105.0 MB in the beginning and 226.0 MB in the end (delta: -121.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:52,377 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 17:01:52,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.66 ms. Allocated memory is still 148.9 MB. Free memory was 104.4 MB in the beginning and 94.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:52,383 INFO L168 Benchmark]: Boogie Preprocessor took 145.38 ms. Allocated memory was 148.9 MB in the beginning and 203.4 MB in the end (delta: 54.5 MB). Free memory was 94.4 MB in the beginning and 182.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:52,384 INFO L168 Benchmark]: RCFGBuilder took 405.53 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 164.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:52,384 INFO L168 Benchmark]: TraceAbstraction took 24246.28 ms. Allocated memory was 203.4 MB in the beginning and 296.2 MB in the end (delta: 92.8 MB). Free memory was 164.1 MB in the beginning and 226.0 MB in the end (delta: -61.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:52,391 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.66 ms. Allocated memory is still 148.9 MB. Free memory was 104.4 MB in the beginning and 94.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.38 ms. Allocated memory was 148.9 MB in the beginning and 203.4 MB in the end (delta: 54.5 MB). Free memory was 94.4 MB in the beginning and 182.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.53 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 164.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24246.28 ms. Allocated memory was 203.4 MB in the beginning and 296.2 MB in the end (delta: 92.8 MB). Free memory was 164.1 MB in the beginning and 226.0 MB in the end (delta: -61.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned int y = __VERIFIER_nondet_uint(); [L15] COND TRUE x < 99 [L16] COND FALSE !(y % 2 == 0) [L17] x += 2 [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 [L22] COND FALSE !(y % 2 == 0) [L23] x += 2 [L25] COND FALSE !(y % 2 == 0) [L26] x -= 2 [L28] COND FALSE !(y % 2 == 0) [L29] x += 2 [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 [L34] COND FALSE !(y % 2 == 0) [L35] x += 4 [L37] COND FALSE !(y % 2 == 0) [L38] x += 2 [L40] COND FALSE !(y % 2 == 0) [L41] x -= 4 [L43] COND FALSE !(y % 2 == 0) [L44] x -= 4 [L15] COND FALSE !(x < 99) [L47] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 300 SDtfs, 163 SDslu, 634 SDs, 0 SdLazy, 3067 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 100 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 29144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/3 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...