/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_const_m5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:08,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:08,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:08,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:08,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:08,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:08,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:08,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:08,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:08,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:08,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:08,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:08,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:08,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:08,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:08,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:08,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:08,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:08,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:08,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:08,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:08,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:08,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:08,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:08,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:08,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:08,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:08,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:08,723 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 22:26:08,746 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:08,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:08,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:08,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:08,749 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:08,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:08,750 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:08,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:08,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:08,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:08,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:08,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:08,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:08,752 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:08,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:08,753 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:08,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:08,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:08,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:08,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:08,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:08,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:08,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:08,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:08,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:08,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:08,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:08,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:08,755 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 22:26:09,100 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:09,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:09,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:09,125 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:09,126 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:09,127 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2019-11-06 22:26:09,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4144bb267/e874ddd373a14efeb813c886615a98a4/FLAGc2b129fbf [2019-11-06 22:26:09,624 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:09,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2019-11-06 22:26:09,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4144bb267/e874ddd373a14efeb813c886615a98a4/FLAGc2b129fbf [2019-11-06 22:26:10,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4144bb267/e874ddd373a14efeb813c886615a98a4 [2019-11-06 22:26:10,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:10,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:10,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:10,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:10,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:10,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:10" (1/1) ... [2019-11-06 22:26:10,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edc095c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10, skipping insertion in model container [2019-11-06 22:26:10,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:10" (1/1) ... [2019-11-06 22:26:10,046 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:10,068 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:10,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:10,277 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:10,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:10,403 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:10,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10 WrapperNode [2019-11-06 22:26:10,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:10,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:10,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:10,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:10,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10" (1/1) ... [2019-11-06 22:26:10,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10" (1/1) ... [2019-11-06 22:26:10,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10" (1/1) ... [2019-11-06 22:26:10,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10" (1/1) ... [2019-11-06 22:26:10,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10" (1/1) ... [2019-11-06 22:26:10,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10" (1/1) ... [2019-11-06 22:26:10,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10" (1/1) ... [2019-11-06 22:26:10,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:10,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:10,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:10,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:10,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10" (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 22:26:10,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:10,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:10,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:10,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:26:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-06 22:26:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:26:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:26:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:10,930 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:10,930 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-06 22:26:10,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:10 BoogieIcfgContainer [2019-11-06 22:26:10,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:10,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:10,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:10,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:10,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:10" (1/3) ... [2019-11-06 22:26:10,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eabc075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:10, skipping insertion in model container [2019-11-06 22:26:10,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:10" (2/3) ... [2019-11-06 22:26:10,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eabc075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:10, skipping insertion in model container [2019-11-06 22:26:10,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:10" (3/3) ... [2019-11-06 22:26:10,939 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m5.c [2019-11-06 22:26:10,947 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:10,955 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:10,966 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:10,991 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:10,992 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:10,992 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:10,992 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:10,992 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:10,992 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:10,992 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:10,993 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-11-06 22:26:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-06 22:26:11,015 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:11,016 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 22:26:11,017 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:11,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:11,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1272746570, now seen corresponding path program 1 times [2019-11-06 22:26:11,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:11,030 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444471789] [2019-11-06 22:26:11,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:11,174 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 22:26:11,174 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444471789] [2019-11-06 22:26:11,179 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:11,179 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:11,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251741091] [2019-11-06 22:26:11,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:11,187 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:11,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:11,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:11,204 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2019-11-06 22:26:11,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:11,246 INFO L93 Difference]: Finished difference Result 93 states and 137 transitions. [2019-11-06 22:26:11,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:11,249 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-11-06 22:26:11,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:11,261 INFO L225 Difference]: With dead ends: 93 [2019-11-06 22:26:11,262 INFO L226 Difference]: Without dead ends: 44 [2019-11-06 22:26:11,270 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 22:26:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-06 22:26:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-06 22:26:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 22:26:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2019-11-06 22:26:11,342 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 32 [2019-11-06 22:26:11,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:11,343 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2019-11-06 22:26:11,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2019-11-06 22:26:11,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-06 22:26:11,347 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:11,348 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 22:26:11,348 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:11,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1923539238, now seen corresponding path program 1 times [2019-11-06 22:26:11,349 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:11,350 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195781658] [2019-11-06 22:26:11,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:11,556 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 22:26:11,556 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195781658] [2019-11-06 22:26:11,557 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:11,557 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:26:11,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23917791] [2019-11-06 22:26:11,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:26:11,559 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:11,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:26:11,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:26:11,560 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 5 states. [2019-11-06 22:26:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:11,687 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2019-11-06 22:26:11,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:26:11,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-06 22:26:11,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:11,690 INFO L225 Difference]: With dead ends: 68 [2019-11-06 22:26:11,690 INFO L226 Difference]: Without dead ends: 63 [2019-11-06 22:26:11,692 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 22:26:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-06 22:26:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-06 22:26:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-06 22:26:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2019-11-06 22:26:11,710 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 32 [2019-11-06 22:26:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:11,711 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2019-11-06 22:26:11,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:26:11,711 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2019-11-06 22:26:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-06 22:26:11,716 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:11,716 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 22:26:11,716 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:11,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:11,717 INFO L82 PathProgramCache]: Analyzing trace with hash -772301532, now seen corresponding path program 1 times [2019-11-06 22:26:11,718 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:11,718 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156719837] [2019-11-06 22:26:11,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:11,784 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 22:26:11,784 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156719837] [2019-11-06 22:26:11,784 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:11,785 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:11,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674930591] [2019-11-06 22:26:11,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:11,786 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:11,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:11,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:11,787 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 3 states. [2019-11-06 22:26:11,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:11,896 INFO L93 Difference]: Finished difference Result 119 states and 157 transitions. [2019-11-06 22:26:11,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:11,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-11-06 22:26:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:11,898 INFO L225 Difference]: With dead ends: 119 [2019-11-06 22:26:11,898 INFO L226 Difference]: Without dead ends: 65 [2019-11-06 22:26:11,899 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 22:26:11,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-06 22:26:11,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2019-11-06 22:26:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-06 22:26:11,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2019-11-06 22:26:11,909 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 34 [2019-11-06 22:26:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:11,909 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2019-11-06 22:26:11,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2019-11-06 22:26:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-06 22:26:11,911 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:11,911 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 22:26:11,912 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:11,912 INFO L82 PathProgramCache]: Analyzing trace with hash -213249118, now seen corresponding path program 1 times [2019-11-06 22:26:11,912 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:11,913 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538797121] [2019-11-06 22:26:11,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:11,989 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 22:26:11,989 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538797121] [2019-11-06 22:26:11,990 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:11,990 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:26:11,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953153722] [2019-11-06 22:26:11,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:26:11,993 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:11,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:11,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:26:11,994 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 4 states. [2019-11-06 22:26:12,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:12,160 INFO L93 Difference]: Finished difference Result 115 states and 151 transitions. [2019-11-06 22:26:12,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:26:12,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-11-06 22:26:12,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:12,162 INFO L225 Difference]: With dead ends: 115 [2019-11-06 22:26:12,162 INFO L226 Difference]: Without dead ends: 66 [2019-11-06 22:26:12,163 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 22:26:12,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-06 22:26:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2019-11-06 22:26:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-06 22:26:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2019-11-06 22:26:12,172 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 36 [2019-11-06 22:26:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:12,172 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2019-11-06 22:26:12,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:26:12,172 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2019-11-06 22:26:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-06 22:26:12,174 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:12,174 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 22:26:12,175 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:12,175 INFO L82 PathProgramCache]: Analyzing trace with hash 25817296, now seen corresponding path program 1 times [2019-11-06 22:26:12,175 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:12,176 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645606114] [2019-11-06 22:26:12,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:12,298 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 22:26:12,298 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645606114] [2019-11-06 22:26:12,299 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486630014] [2019-11-06 22:26:12,299 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 22:26:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:12,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:26:12,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:12,444 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 22:26:12,446 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:12,493 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 22:26:12,493 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1704077152] [2019-11-06 22:26:12,499 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 55 [2019-11-06 22:26:12,556 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:12,556 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:12,627 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:12,632 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 44 variables. [2019-11-06 22:26:12,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:12,639 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:12,690 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-11-06 22:26:12,691 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:12,699 INFO L553 sIntCurrentIteration]: We unified 53 AI predicates to 53 [2019-11-06 22:26:12,699 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:12,700 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:12,700 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 9 [2019-11-06 22:26:12,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344893537] [2019-11-06 22:26:12,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:26:12,702 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:12,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:26:12,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:12,702 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 4 states. [2019-11-06 22:26:12,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:12,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:12,910 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: 947#true or 1336#(= ~MAX~0 100000) ([#1{~MAX~0 = [100000;100000]; }]) 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 22:26:12,916 INFO L168 Benchmark]: Toolchain (without parser) took 2886.76 ms. Allocated memory was 135.3 MB in the beginning and 226.0 MB in the end (delta: 90.7 MB). Free memory was 99.2 MB in the beginning and 143.8 MB in the end (delta: -44.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:12,917 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 117.2 MB in the beginning and 117.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:12,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.22 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 99.0 MB in the beginning and 177.3 MB in the end (delta: -78.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:12,927 INFO L168 Benchmark]: Boogie Preprocessor took 70.49 ms. Allocated memory is still 198.7 MB. Free memory was 177.3 MB in the beginning and 175.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:12,929 INFO L168 Benchmark]: RCFGBuilder took 454.12 ms. Allocated memory is still 198.7 MB. Free memory was 175.2 MB in the beginning and 153.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:12,930 INFO L168 Benchmark]: TraceAbstraction took 1980.25 ms. Allocated memory was 198.7 MB in the beginning and 226.0 MB in the end (delta: 27.3 MB). Free memory was 152.9 MB in the beginning and 143.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:12,938 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 117.2 MB in the beginning and 117.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.22 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 99.0 MB in the beginning and 177.3 MB in the end (delta: -78.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.49 ms. Allocated memory is still 198.7 MB. Free memory was 177.3 MB in the beginning and 175.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.12 ms. Allocated memory is still 198.7 MB. Free memory was 175.2 MB in the beginning and 153.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1980.25 ms. Allocated memory was 198.7 MB in the beginning and 226.0 MB in the end (delta: 27.3 MB). Free memory was 152.9 MB in the beginning and 143.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 947#true or 1336#(= ~MAX~0 100000) ([#1{~MAX~0 = [100000;100000]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 947#true or 1336#(= ~MAX~0 100000) ([#1{~MAX~0 = [100000;100000]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...