/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/reducercommutativity/avg.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:03:54,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:03:54,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:03:54,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:03:54,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:03:54,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:03:54,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:03:54,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:03:54,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:03:54,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:03:54,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:03:54,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:03:54,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:03:54,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:03:54,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:03:54,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:03:54,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:03:54,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:03:54,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:03:54,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:03:54,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:03:54,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:03:54,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:03:54,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:03:54,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 01:03:54,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 01:03:54,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 01:03:54,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 01:03:54,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 01:03:54,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 01:03:54,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 01:03:54,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 01:03:54,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 01:03:54,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 01:03:54,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 01:03:54,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 01:03:54,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 01:03:54,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 01:03:54,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:03:54,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:03:54,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:03:54,625 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 [2019-11-07 01:03:54,638 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:03:54,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:03:54,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:03:54,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:03:54,640 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:03:54,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:03:54,641 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:03:54,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:03:54,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:03:54,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:03:54,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:03:54,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:03:54,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:03:54,642 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:03:54,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:03:54,643 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:03:54,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:03:54,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:03:54,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:03:54,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:03:54,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:03:54,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:03:54,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:03:54,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:03:54,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:03:54,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:03:54,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:03:54,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:03:54,645 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 [2019-11-07 01:03:54,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:03:54,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:03:54,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:03:54,952 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:03:54,953 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:03:54,954 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg.i [2019-11-07 01:03:55,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c7ec3da/df9bb8bf8bc14104bb44237bb673362c/FLAG4c6e44528 [2019-11-07 01:03:55,531 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:03:55,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/avg.i [2019-11-07 01:03:55,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c7ec3da/df9bb8bf8bc14104bb44237bb673362c/FLAG4c6e44528 [2019-11-07 01:03:55,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c7ec3da/df9bb8bf8bc14104bb44237bb673362c [2019-11-07 01:03:55,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:03:55,909 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:03:55,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:03:55,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:03:55,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:03:55,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:55" (1/1) ... [2019-11-07 01:03:55,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a38f3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:55, skipping insertion in model container [2019-11-07 01:03:55,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:55" (1/1) ... [2019-11-07 01:03:55,925 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:03:55,941 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:03:56,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:03:56,148 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:03:56,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:03:56,268 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:03:56,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56 WrapperNode [2019-11-07 01:03:56,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:03:56,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:03:56,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:03:56,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:03:56,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56" (1/1) ... [2019-11-07 01:03:56,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56" (1/1) ... [2019-11-07 01:03:56,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56" (1/1) ... [2019-11-07 01:03:56,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56" (1/1) ... [2019-11-07 01:03:56,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56" (1/1) ... [2019-11-07 01:03:56,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56" (1/1) ... [2019-11-07 01:03:56,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56" (1/1) ... [2019-11-07 01:03:56,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:03:56,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:03:56,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:03:56,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:03:56,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56" (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 [2019-11-07 01:03:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:03:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:03:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2019-11-07 01:03:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:03:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:03:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:03:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2019-11-07 01:03:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:03:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:03:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:03:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:03:56,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:03:56,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:03:56,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:03:56,661 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:03:56,661 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-07 01:03:56,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:56 BoogieIcfgContainer [2019-11-07 01:03:56,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:03:56,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:03:56,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:03:56,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:03:56,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:03:55" (1/3) ... [2019-11-07 01:03:56,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330682aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:56, skipping insertion in model container [2019-11-07 01:03:56,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:56" (2/3) ... [2019-11-07 01:03:56,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330682aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:56, skipping insertion in model container [2019-11-07 01:03:56,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:56" (3/3) ... [2019-11-07 01:03:56,671 INFO L109 eAbstractionObserver]: Analyzing ICFG avg.i [2019-11-07 01:03:56,681 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:03:56,687 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:03:56,698 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:03:56,723 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:03:56,723 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:03:56,724 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:03:56,724 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:03:56,724 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:03:56,724 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:03:56,724 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:03:56,724 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:03:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-07 01:03:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 01:03:56,750 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:03:56,751 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:03:56,753 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:03:56,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:03:56,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1931873834, now seen corresponding path program 1 times [2019-11-07 01:03:56,765 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:03:56,765 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45253693] [2019-11-07 01:03:56,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:03:56,865 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 01:03:56,866 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257464209] [2019-11-07 01:03:56,866 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 [2019-11-07 01:03:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:03:56,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 01:03:56,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:03:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 01:03:57,052 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:03:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 01:03:57,163 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45253693] [2019-11-07 01:03:57,163 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 01:03:57,163 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257464209] [2019-11-07 01:03:57,164 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-07 01:03:57,165 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-11-07 01:03:57,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753852623] [2019-11-07 01:03:57,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:03:57,172 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:03:57,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:03:57,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:03:57,190 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2019-11-07 01:03:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:03:57,294 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2019-11-07 01:03:57,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:03:57,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-07 01:03:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:03:57,311 INFO L225 Difference]: With dead ends: 61 [2019-11-07 01:03:57,311 INFO L226 Difference]: Without dead ends: 27 [2019-11-07 01:03:57,318 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:03:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-07 01:03:57,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-07 01:03:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-07 01:03:57,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-07 01:03:57,385 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 32 [2019-11-07 01:03:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:03:57,386 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-07 01:03:57,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:03:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-07 01:03:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-07 01:03:57,391 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:03:57,391 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:03:57,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:03:57,596 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:03:57,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:03:57,597 INFO L82 PathProgramCache]: Analyzing trace with hash -334011672, now seen corresponding path program 1 times [2019-11-07 01:03:57,598 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:03:57,598 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736884909] [2019-11-07 01:03:57,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:03:57,642 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 01:03:57,643 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764582917] [2019-11-07 01:03:57,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:03:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:03:57,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:03:57,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:03:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-07 01:03:57,752 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:03:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 01:03:57,861 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736884909] [2019-11-07 01:03:57,862 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 01:03:57,862 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764582917] [2019-11-07 01:03:57,862 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2071824162] [2019-11-07 01:03:57,869 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 39 [2019-11-07 01:03:57,921 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 01:03:57,922 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 01:03:58,025 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 01:03:58,027 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 28 variables. [2019-11-07 01:03:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:03:58,030 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 01:03:58,076 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-07 01:03:58,076 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 01:03:58,080 INFO L553 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-11-07 01:03:58,081 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 01:03:58,081 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 01:03:58,081 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 9 [2019-11-07 01:03:58,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486612325] [2019-11-07 01:03:58,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:03:58,083 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:03:58,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 01:03:58,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:03:58,084 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 3 states. [2019-11-07 01:03:58,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 01:03:58,289 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:03:58,290 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: 344#true or 626#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]) 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) [2019-11-07 01:03:58,298 INFO L168 Benchmark]: Toolchain (without parser) took 2387.24 ms. Allocated memory was 144.7 MB in the beginning and 233.3 MB in the end (delta: 88.6 MB). Free memory was 101.2 MB in the beginning and 189.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 184.9 kB. Max. memory is 7.1 GB. [2019-11-07 01:03:58,299 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 01:03:58,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.75 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 101.0 MB in the beginning and 179.7 MB in the end (delta: -78.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2019-11-07 01:03:58,301 INFO L168 Benchmark]: Boogie Preprocessor took 36.90 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 177.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-11-07 01:03:58,302 INFO L168 Benchmark]: RCFGBuilder took 355.71 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 162.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2019-11-07 01:03:58,303 INFO L168 Benchmark]: TraceAbstraction took 1630.35 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 161.7 MB in the beginning and 189.6 MB in the end (delta: -27.8 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-11-07 01:03:58,308 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 359.75 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 101.0 MB in the beginning and 179.7 MB in the end (delta: -78.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.90 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 177.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.71 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 162.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1630.35 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 161.7 MB in the beginning and 189.6 MB in the end (delta: -27.8 MB). Peak memory consumption was 4.1 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: 344#true or 626#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 344#true or 626#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]): 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...