/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_m5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:14,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:14,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:14,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:14,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:14,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:14,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:14,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:14,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:14,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:14,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:14,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:14,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:14,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:14,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:14,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:14,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:14,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:14,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:14,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:14,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:14,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:14,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:14,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:14,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:14,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:14,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:14,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:14,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:26:14,192 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:14,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:14,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:14,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:14,194 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:14,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:14,194 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:14,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:14,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:14,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:14,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:14,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:14,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:14,196 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:14,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:14,196 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:14,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:14,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:14,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:14,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:14,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:14,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:14,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:14,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:14,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:14,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:14,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:14,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:14,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:26:14,547 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:14,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:14,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:14,569 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:14,569 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:14,570 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_m5.c [2019-11-06 22:26:14,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02f1f1121/537d76f9bfe3447aa0f9cc3163bb8745/FLAG02e978f53 [2019-11-06 22:26:15,085 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:15,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_m5.c [2019-11-06 22:26:15,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02f1f1121/537d76f9bfe3447aa0f9cc3163bb8745/FLAG02e978f53 [2019-11-06 22:26:15,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02f1f1121/537d76f9bfe3447aa0f9cc3163bb8745 [2019-11-06 22:26:15,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:15,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:15,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:15,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:15,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:15,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:15" (1/1) ... [2019-11-06 22:26:15,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630fa84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15, skipping insertion in model container [2019-11-06 22:26:15,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:15" (1/1) ... [2019-11-06 22:26:15,508 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:15,532 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:15,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:15,774 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:15,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:15,997 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:15,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15 WrapperNode [2019-11-06 22:26:15,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:15,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:15,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:15,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:16,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15" (1/1) ... [2019-11-06 22:26:16,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15" (1/1) ... [2019-11-06 22:26:16,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15" (1/1) ... [2019-11-06 22:26:16,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15" (1/1) ... [2019-11-06 22:26:16,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15" (1/1) ... [2019-11-06 22:26:16,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15" (1/1) ... [2019-11-06 22:26:16,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15" (1/1) ... [2019-11-06 22:26:16,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:16,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:16,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:16,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:16,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-06 22:26:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:16,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:26:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2019-11-06 22:26:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:16,509 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:16,509 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-06 22:26:16,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:16 BoogieIcfgContainer [2019-11-06 22:26:16,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:16,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:16,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:16,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:16,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:15" (1/3) ... [2019-11-06 22:26:16,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119b5721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:16, skipping insertion in model container [2019-11-06 22:26:16,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:15" (2/3) ... [2019-11-06 22:26:16,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119b5721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:16, skipping insertion in model container [2019-11-06 22:26:16,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:16" (3/3) ... [2019-11-06 22:26:16,518 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_m5.c [2019-11-06 22:26:16,527 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:16,534 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:16,546 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:16,569 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:16,569 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:16,570 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:16,570 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:16,570 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:16,570 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:16,570 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:16,570 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:16,586 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-11-06 22:26:16,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-06 22:26:16,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:16,593 INFO L410 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] [2019-11-06 22:26:16,595 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:16,600 INFO L82 PathProgramCache]: Analyzing trace with hash -298961335, now seen corresponding path program 1 times [2019-11-06 22:26:16,607 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:16,607 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171645411] [2019-11-06 22:26:16,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:16,745 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171645411] [2019-11-06 22:26:16,746 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:16,747 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:16,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870464140] [2019-11-06 22:26:16,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:16,755 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:16,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:16,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:16,773 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-11-06 22:26:16,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:16,804 INFO L93 Difference]: Finished difference Result 95 states and 139 transitions. [2019-11-06 22:26:16,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:16,806 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-11-06 22:26:16,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:16,815 INFO L225 Difference]: With dead ends: 95 [2019-11-06 22:26:16,816 INFO L226 Difference]: Without dead ends: 44 [2019-11-06 22:26:16,819 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-06 22:26:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-06 22:26:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 22:26:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2019-11-06 22:26:16,864 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 32 [2019-11-06 22:26:16,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:16,865 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2019-11-06 22:26:16,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:16,865 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2019-11-06 22:26:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-06 22:26:16,867 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:16,867 INFO L410 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] [2019-11-06 22:26:16,867 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:16,868 INFO L82 PathProgramCache]: Analyzing trace with hash 351831333, now seen corresponding path program 1 times [2019-11-06 22:26:16,868 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:16,868 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014243535] [2019-11-06 22:26:16,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:17,036 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014243535] [2019-11-06 22:26:17,037 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:17,037 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:26:17,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216231020] [2019-11-06 22:26:17,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:26:17,039 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:17,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:26:17,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:26:17,040 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 5 states. [2019-11-06 22:26:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:17,158 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2019-11-06 22:26:17,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:26:17,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-06 22:26:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:17,162 INFO L225 Difference]: With dead ends: 68 [2019-11-06 22:26:17,162 INFO L226 Difference]: Without dead ends: 63 [2019-11-06 22:26:17,163 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:26:17,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-06 22:26:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-06 22:26:17,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-06 22:26:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2019-11-06 22:26:17,175 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 32 [2019-11-06 22:26:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:17,175 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2019-11-06 22:26:17,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:26:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2019-11-06 22:26:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-06 22:26:17,177 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:17,177 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:17,178 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:17,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:17,178 INFO L82 PathProgramCache]: Analyzing trace with hash 615337315, now seen corresponding path program 1 times [2019-11-06 22:26:17,179 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:17,179 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226256310] [2019-11-06 22:26:17,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:17,258 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226256310] [2019-11-06 22:26:17,258 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:17,259 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:17,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856905069] [2019-11-06 22:26:17,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:17,262 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:17,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:17,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:17,263 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 3 states. [2019-11-06 22:26:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:17,372 INFO L93 Difference]: Finished difference Result 119 states and 157 transitions. [2019-11-06 22:26:17,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:17,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-11-06 22:26:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:17,376 INFO L225 Difference]: With dead ends: 119 [2019-11-06 22:26:17,377 INFO L226 Difference]: Without dead ends: 65 [2019-11-06 22:26:17,378 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-06 22:26:17,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2019-11-06 22:26:17,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-06 22:26:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2019-11-06 22:26:17,401 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 34 [2019-11-06 22:26:17,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:17,401 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2019-11-06 22:26:17,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2019-11-06 22:26:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-06 22:26:17,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:17,404 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:17,404 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:17,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1838268449, now seen corresponding path program 1 times [2019-11-06 22:26:17,407 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:17,407 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776469589] [2019-11-06 22:26:17,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:26:17,528 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776469589] [2019-11-06 22:26:17,528 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:17,528 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:26:17,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102620776] [2019-11-06 22:26:17,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:26:17,530 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:17,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:17,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:26:17,531 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 4 states. [2019-11-06 22:26:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:17,695 INFO L93 Difference]: Finished difference Result 114 states and 150 transitions. [2019-11-06 22:26:17,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:26:17,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-11-06 22:26:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:17,699 INFO L225 Difference]: With dead ends: 114 [2019-11-06 22:26:17,699 INFO L226 Difference]: Without dead ends: 65 [2019-11-06 22:26:17,702 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:26:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-06 22:26:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2019-11-06 22:26:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-06 22:26:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2019-11-06 22:26:17,723 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 36 [2019-11-06 22:26:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:17,723 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2019-11-06 22:26:17,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:26:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2019-11-06 22:26:17,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-06 22:26:17,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:17,738 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:17,738 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:17,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1356508047, now seen corresponding path program 1 times [2019-11-06 22:26:17,739 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:17,739 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635466775] [2019-11-06 22:26:17,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:26:17,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635466775] [2019-11-06 22:26:17,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86552437] [2019-11-06 22:26:17,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:17,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:26:17,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:26:17,986 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:26:18,036 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1906270301] [2019-11-06 22:26:18,043 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 55 [2019-11-06 22:26:18,114 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:18,114 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:18,193 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:18,195 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 42 variables. [2019-11-06 22:26:18,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:18,199 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:18,252 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-06 22:26:18,252 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:18,257 INFO L553 sIntCurrentIteration]: We unified 53 AI predicates to 53 [2019-11-06 22:26:18,257 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:18,258 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:18,261 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4, 4] total 10 [2019-11-06 22:26:18,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119052980] [2019-11-06 22:26:18,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:18,262 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:18,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:26:18,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:26:18,263 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 3 states. [2019-11-06 22:26:18,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:18,470 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:18,472 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 949#true or 1344#(and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) ([#1{~SIZE~0 = [-32768;32767]; }]) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:403) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1089) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:969) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-06 22:26:18,478 INFO L168 Benchmark]: Toolchain (without parser) took 2986.24 ms. Allocated memory was 134.2 MB in the beginning and 226.5 MB in the end (delta: 92.3 MB). Free memory was 98.8 MB in the beginning and 148.3 MB in the end (delta: -49.6 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:18,480 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 134.2 MB. Free memory was 117.4 MB in the beginning and 117.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:18,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 505.65 ms. Allocated memory was 134.2 MB in the beginning and 201.9 MB in the end (delta: 67.6 MB). Free memory was 98.3 MB in the beginning and 179.3 MB in the end (delta: -80.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:18,482 INFO L168 Benchmark]: Boogie Preprocessor took 53.66 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 177.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:18,482 INFO L168 Benchmark]: RCFGBuilder took 458.47 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 155.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:18,483 INFO L168 Benchmark]: TraceAbstraction took 1964.38 ms. Allocated memory was 201.9 MB in the beginning and 226.5 MB in the end (delta: 24.6 MB). Free memory was 155.5 MB in the beginning and 148.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:18,492 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12 ms. Allocated memory is still 134.2 MB. Free memory was 117.4 MB in the beginning and 117.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 505.65 ms. Allocated memory was 134.2 MB in the beginning and 201.9 MB in the end (delta: 67.6 MB). Free memory was 98.3 MB in the beginning and 179.3 MB in the end (delta: -80.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.66 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 177.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.47 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 155.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1964.38 ms. Allocated memory was 201.9 MB in the beginning and 226.5 MB in the end (delta: 24.6 MB). Free memory was 155.5 MB in the beginning and 148.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 949#true or 1344#(and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) ([#1{~SIZE~0 = [-32768;32767]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 949#true or 1344#(and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) ([#1{~SIZE~0 = [-32768;32767]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...