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_const3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:51:50,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:51:50,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:51:50,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:51:50,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:51:50,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:51:50,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:51:50,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:51:50,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:51:50,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:51:50,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:51:50,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:51:50,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:51:50,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:51:50,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:51:50,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:51:50,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:51:50,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:51:50,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:51:50,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:51:50,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:51:50,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:51:50,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:51:50,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:51:50,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:51:50,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:51:50,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:51:50,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:51:50,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:51:50,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:51:50,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:51:50,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:51:50,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:51:50,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:51:50,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:51:50,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:51:50,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:51:50,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:51:50,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:51:50,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:51:50,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:51:50,081 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 [2019-10-14 23:51:50,106 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:51:50,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:51:50,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:51:50,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:51:50,109 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:51:50,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:51:50,110 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:51:50,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:51:50,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:51:50,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:51:50,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:51:50,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:51:50,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:51:50,112 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:51:50,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:51:50,113 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:51:50,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:51:50,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:51:50,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:51:50,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:51:50,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:51:50,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:51:50,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:51:50,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:51:50,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:51:50,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:51:50,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:51:50,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:51:50,116 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 [2019-10-14 23:51:50,379 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:51:50,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:51:50,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:51:50,406 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:51:50,406 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:51:50,407 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const3.c [2019-10-14 23:51:50,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1ac3b68/effae1aabb064c78a02ac567c69943c2/FLAG6065034c9 [2019-10-14 23:51:50,931 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:51:50,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const3.c [2019-10-14 23:51:50,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1ac3b68/effae1aabb064c78a02ac567c69943c2/FLAG6065034c9 [2019-10-14 23:51:51,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1ac3b68/effae1aabb064c78a02ac567c69943c2 [2019-10-14 23:51:51,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:51:51,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:51:51,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:51:51,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:51:51,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:51:51,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:51" (1/1) ... [2019-10-14 23:51:51,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9fb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51, skipping insertion in model container [2019-10-14 23:51:51,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:51" (1/1) ... [2019-10-14 23:51:51,367 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:51:51,383 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:51:51,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:51:51,563 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:51:51,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:51:51,601 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:51:51,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51 WrapperNode [2019-10-14 23:51:51,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:51:51,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:51:51,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:51:51,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:51:51,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51" (1/1) ... [2019-10-14 23:51:51,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51" (1/1) ... [2019-10-14 23:51:51,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51" (1/1) ... [2019-10-14 23:51:51,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51" (1/1) ... [2019-10-14 23:51:51,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51" (1/1) ... [2019-10-14 23:51:51,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51" (1/1) ... [2019-10-14 23:51:51,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51" (1/1) ... [2019-10-14 23:51:51,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:51:51,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:51:51,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:51:51,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:51:51,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51" (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 [2019-10-14 23:51:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:51:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:51:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:51:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:51:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:51:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:51:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:51:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-14 23:51:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:51:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:51:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:51:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:51:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:51:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:51:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:51:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:51:52,117 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:51:52,118 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-14 23:51:52,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:52 BoogieIcfgContainer [2019-10-14 23:51:52,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:51:52,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:51:52,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:51:52,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:51:52,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:51:51" (1/3) ... [2019-10-14 23:51:52,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6686fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:52, skipping insertion in model container [2019-10-14 23:51:52,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:51" (2/3) ... [2019-10-14 23:51:52,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6686fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:52, skipping insertion in model container [2019-10-14 23:51:52,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:52" (3/3) ... [2019-10-14 23:51:52,127 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const3.c [2019-10-14 23:51:52,135 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:51:52,142 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:51:52,151 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:51:52,173 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:51:52,174 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:51:52,174 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:51:52,174 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:51:52,174 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:51:52,174 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:51:52,174 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:51:52,175 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:51:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-10-14 23:51:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:51:52,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:52,204 INFO L380 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] [2019-10-14 23:51:52,206 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:52,212 INFO L82 PathProgramCache]: Analyzing trace with hash -340082088, now seen corresponding path program 1 times [2019-10-14 23:51:52,221 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:52,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585037060] [2019-10-14 23:51:52,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:52,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:52,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:51:52,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585037060] [2019-10-14 23:51:52,354 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:52,354 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:51:52,354 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674672560] [2019-10-14 23:51:52,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:51:52,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:52,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:51:52,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:51:52,377 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2019-10-14 23:51:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:52,406 INFO L93 Difference]: Finished difference Result 69 states and 97 transitions. [2019-10-14 23:51:52,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:51:52,408 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-10-14 23:51:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:52,417 INFO L225 Difference]: With dead ends: 69 [2019-10-14 23:51:52,418 INFO L226 Difference]: Without dead ends: 32 [2019-10-14 23:51:52,421 INFO L600 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 [2019-10-14 23:51:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-14 23:51:52,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-10-14 23:51:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-14 23:51:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-10-14 23:51:52,466 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 24 [2019-10-14 23:51:52,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:52,467 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-10-14 23:51:52,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:51:52,468 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-10-14 23:51:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:51:52,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:52,470 INFO L380 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] [2019-10-14 23:51:52,470 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:52,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1435036102, now seen corresponding path program 1 times [2019-10-14 23:51:52,472 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:52,472 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52749040] [2019-10-14 23:51:52,472 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:52,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:52,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:51:52,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52749040] [2019-10-14 23:51:52,642 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:52,643 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:51:52,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404482803] [2019-10-14 23:51:52,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:51:52,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:52,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:51:52,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:51:52,649 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2019-10-14 23:51:52,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:52,780 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2019-10-14 23:51:52,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:51:52,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-14 23:51:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:52,784 INFO L225 Difference]: With dead ends: 48 [2019-10-14 23:51:52,784 INFO L226 Difference]: Without dead ends: 43 [2019-10-14 23:51:52,787 INFO L600 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 [2019-10-14 23:51:52,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-14 23:51:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-14 23:51:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-14 23:51:52,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-10-14 23:51:52,801 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 24 [2019-10-14 23:51:52,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:52,802 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-10-14 23:51:52,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:51:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2019-10-14 23:51:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-14 23:51:52,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:52,807 INFO L380 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] [2019-10-14 23:51:52,808 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:52,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:52,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1431897668, now seen corresponding path program 1 times [2019-10-14 23:51:52,810 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:52,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907812885] [2019-10-14 23:51:52,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:52,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:52,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:51:52,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907812885] [2019-10-14 23:51:52,908 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:52,909 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:51:52,909 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433356353] [2019-10-14 23:51:52,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:51:52,910 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:52,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:51:52,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:52,912 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 3 states. [2019-10-14 23:51:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:53,000 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2019-10-14 23:51:53,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:51:53,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-10-14 23:51:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:53,004 INFO L225 Difference]: With dead ends: 79 [2019-10-14 23:51:53,004 INFO L226 Difference]: Without dead ends: 45 [2019-10-14 23:51:53,005 INFO L600 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 [2019-10-14 23:51:53,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-14 23:51:53,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-10-14 23:51:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-14 23:51:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2019-10-14 23:51:53,013 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 26 [2019-10-14 23:51:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:53,013 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2019-10-14 23:51:53,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:51:53,014 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2019-10-14 23:51:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-14 23:51:53,015 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:53,015 INFO L380 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] [2019-10-14 23:51:53,015 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:53,016 INFO L82 PathProgramCache]: Analyzing trace with hash -820794174, now seen corresponding path program 1 times [2019-10-14 23:51:53,016 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:53,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268406883] [2019-10-14 23:51:53,016 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,017 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:51:53,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268406883] [2019-10-14 23:51:53,087 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:53,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:51:53,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447023040] [2019-10-14 23:51:53,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:51:53,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:53,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:51:53,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:51:53,090 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 4 states. [2019-10-14 23:51:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:53,200 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2019-10-14 23:51:53,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:51:53,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-10-14 23:51:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:53,202 INFO L225 Difference]: With dead ends: 75 [2019-10-14 23:51:53,202 INFO L226 Difference]: Without dead ends: 46 [2019-10-14 23:51:53,203 INFO L600 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 [2019-10-14 23:51:53,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-14 23:51:53,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2019-10-14 23:51:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-14 23:51:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-10-14 23:51:53,210 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 28 [2019-10-14 23:51:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:53,211 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-10-14 23:51:53,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:51:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-10-14 23:51:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:51:53,213 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:53,213 INFO L380 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] [2019-10-14 23:51:53,213 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:53,214 INFO L82 PathProgramCache]: Analyzing trace with hash -304137992, now seen corresponding path program 1 times [2019-10-14 23:51:53,214 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:53,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003259370] [2019-10-14 23:51:53,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:51:53,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003259370] [2019-10-14 23:51:53,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735267976] [2019-10-14 23:51:53,299 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 [2019-10-14 23:51:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:53,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:51:53,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:51:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:51:53,466 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:51:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:51:53,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [429780319] [2019-10-14 23:51:53,516 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 39 [2019-10-14 23:51:53,559 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:51:53,560 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:51:53,641 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:51:53,644 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 36 variables. [2019-10-14 23:51:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:53,649 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:51:53,704 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-10-14 23:51:53,704 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:51:53,714 INFO L553 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-10-14 23:51:53,714 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:51:53,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:51:53,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 9 [2019-10-14 23:51:53,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468996891] [2019-10-14 23:51:53,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:51:53,718 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:53,718 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:51:53,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:51:53,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:51:53,719 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 4 states. [2019-10-14 23:51:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:53,725 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-10-14 23:51:53,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:51:53,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2019-10-14 23:51:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:53,726 INFO L225 Difference]: With dead ends: 39 [2019-10-14 23:51:53,727 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:51:53,727 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:51:53,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:51:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:51:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:51:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:51:53,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-10-14 23:51:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:53,729 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:51:53,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:51:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:51:53,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:51:53,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:51:53,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:51:54,075 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:51:54,075 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:51:54,076 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:51:54,076 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:51:54,076 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 (+ ~SIZE~0 2147483648)) (<= ~SIZE~0 2147483647) (= ~MAX~0 100000)) [2019-10-14 23:51:54,076 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:51:54,076 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:51:54,076 INFO L443 ceAbstractionStarter]: For program point L35-2(lines 35 38) no Hoare annotation was computed. [2019-10-14 23:51:54,077 INFO L439 ceAbstractionStarter]: At program point L35-3(lines 35 38) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:51:54,077 INFO L443 ceAbstractionStarter]: For program point L35-4(lines 35 38) no Hoare annotation was computed. [2019-10-14 23:51:54,077 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 57) no Hoare annotation was computed. [2019-10-14 23:51:54,077 INFO L443 ceAbstractionStarter]: For program point L40-2(lines 40 43) no Hoare annotation was computed. [2019-10-14 23:51:54,077 INFO L439 ceAbstractionStarter]: At program point L40-3(lines 40 43) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:51:54,077 INFO L443 ceAbstractionStarter]: For program point L40-4(lines 40 43) no Hoare annotation was computed. [2019-10-14 23:51:54,078 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2019-10-14 23:51:54,078 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 23) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:51:54,078 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 23) no Hoare annotation was computed. [2019-10-14 23:51:54,078 INFO L443 ceAbstractionStarter]: For program point L45-2(lines 45 48) no Hoare annotation was computed. [2019-10-14 23:51:54,078 INFO L439 ceAbstractionStarter]: At program point L45-3(lines 45 48) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:51:54,078 INFO L443 ceAbstractionStarter]: For program point L45-4(lines 45 48) no Hoare annotation was computed. [2019-10-14 23:51:54,079 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 25 28) no Hoare annotation was computed. [2019-10-14 23:51:54,079 INFO L439 ceAbstractionStarter]: At program point L25-3(lines 25 28) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:51:54,079 INFO L443 ceAbstractionStarter]: For program point L25-4(lines 25 28) no Hoare annotation was computed. [2019-10-14 23:51:54,079 INFO L443 ceAbstractionStarter]: For program point L50-2(lines 50 53) no Hoare annotation was computed. [2019-10-14 23:51:54,079 INFO L439 ceAbstractionStarter]: At program point L50-3(lines 50 53) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:51:54,079 INFO L439 ceAbstractionStarter]: At program point L50-4(lines 50 53) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (= main_~sum~0 0) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:51:54,080 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 57) no Hoare annotation was computed. [2019-10-14 23:51:54,080 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 11 57) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648))) (and (<= 0 (+ ~SIZE~0 2147483648)) (<= ~SIZE~0 2147483647))) [2019-10-14 23:51:54,080 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 33) no Hoare annotation was computed. [2019-10-14 23:51:54,080 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 33) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:51:54,080 INFO L443 ceAbstractionStarter]: For program point L30-4(lines 30 33) no Hoare annotation was computed. [2019-10-14 23:51:54,081 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 55) no Hoare annotation was computed. [2019-10-14 23:51:54,081 INFO L443 ceAbstractionStarter]: For program point L14-1(lines 14 55) no Hoare annotation was computed. [2019-10-14 23:51:54,081 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-14 23:51:54,081 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-14 23:51:54,081 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-14 23:51:54,081 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-14 23:51:54,082 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-14 23:51:54,082 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-14 23:51:54,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:51:54 BoogieIcfgContainer [2019-10-14 23:51:54,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:51:54,099 INFO L168 Benchmark]: Toolchain (without parser) took 2750.49 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 101.6 MB in the beginning and 155.8 MB in the end (delta: -54.2 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:54,100 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:51:54,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.96 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 90.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:54,101 INFO L168 Benchmark]: Boogie Preprocessor took 117.51 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 179.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:54,102 INFO L168 Benchmark]: RCFGBuilder took 398.65 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 160.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:54,103 INFO L168 Benchmark]: TraceAbstraction took 1976.21 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 160.9 MB in the beginning and 155.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:54,107 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 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.96 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 90.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.51 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 179.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 398.65 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 160.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1976.21 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 160.9 MB in the beginning and 155.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 136 SDtfs, 49 SDslu, 102 SDs, 0 SdLazy, 106 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 17 PreInvPairs, 18 NumberOfFragments, 162 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 9531 SizeOfPredicates, 3 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 21/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 133, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9763513513513513, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8648648648648649, AVG_WEAKENED_CONJUNCTS: 0.5945945945945946, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...