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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/nla-digbench/egcd.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:21:37,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:21:37,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:21:37,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:21:37,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:21:37,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:21:37,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:21:37,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:21:37,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:21:37,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:21:37,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:21:37,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-09-10 02:21:37,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:21:37,908 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:21:37,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:21:37,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:21:37,909 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:21:37,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:21:37,910 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:21:37,910 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:21:37,910 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:21:37,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:21:37,911 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:21:37,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:21:37,911 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:21:37,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:21:37,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:21:37,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:21:37,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:21:37,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:21:37,913 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:21:37,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:21:37,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:21:37,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:21:37,915 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:21:37,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:21:37,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:21:37,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:21:37,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:21:37,915 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:21:37,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:21:37,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:21:37,916 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:21:37,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:21:37,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:21:37,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:21:37,989 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:21:37,989 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:21:37,990 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/egcd.c [2019-09-10 02:21:38,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e27f95d/4d3baa9ede584542b633753db8d2a17f/FLAGcf6431570 [2019-09-10 02:21:38,482 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:21:38,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/egcd.c [2019-09-10 02:21:38,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e27f95d/4d3baa9ede584542b633753db8d2a17f/FLAGcf6431570 [2019-09-10 02:21:38,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e27f95d/4d3baa9ede584542b633753db8d2a17f [2019-09-10 02:21:38,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:21:38,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:21:38,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:21:38,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:21:38,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:21:38,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:21:38" (1/1) ... [2019-09-10 02:21:38,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d682db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:38, skipping insertion in model container [2019-09-10 02:21:38,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:21:38" (1/1) ... [2019-09-10 02:21:38,946 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:21:38,970 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:21:39,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:21:39,182 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:21:39,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:21:39,213 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:21:39,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39 WrapperNode [2019-09-10 02:21:39,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:21:39,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:21:39,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:21:39,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:21:39,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39" (1/1) ... [2019-09-10 02:21:39,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39" (1/1) ... [2019-09-10 02:21:39,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39" (1/1) ... [2019-09-10 02:21:39,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39" (1/1) ... [2019-09-10 02:21:39,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39" (1/1) ... [2019-09-10 02:21:39,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39" (1/1) ... [2019-09-10 02:21:39,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39" (1/1) ... [2019-09-10 02:21:39,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:21:39,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:21:39,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:21:39,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:21:39,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39" (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 [2019-09-10 02:21:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:21:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:21:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 02:21:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:21:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:21:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:21:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 02:21:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 02:21:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:21:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:21:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:21:39,584 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:21:39,585 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 02:21:39,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:21:39 BoogieIcfgContainer [2019-09-10 02:21:39,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:21:39,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:21:39,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:21:39,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:21:39,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:21:38" (1/3) ... [2019-09-10 02:21:39,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2462b01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:21:39, skipping insertion in model container [2019-09-10 02:21:39,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:21:39" (2/3) ... [2019-09-10 02:21:39,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2462b01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:21:39, skipping insertion in model container [2019-09-10 02:21:39,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:21:39" (3/3) ... [2019-09-10 02:21:39,594 INFO L109 eAbstractionObserver]: Analyzing ICFG egcd.c [2019-09-10 02:21:39,603 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:21:39,611 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:21:39,639 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:21:39,681 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:21:39,682 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:21:39,682 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:21:39,682 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:21:39,682 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:21:39,682 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:21:39,683 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:21:39,683 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:21:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-09-10 02:21:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-10 02:21:39,710 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:39,711 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:39,713 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1589353370, now seen corresponding path program 1 times [2019-09-10 02:21:39,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:39,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:39,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:39,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:39,776 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:21:39,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:21:39,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:21:39,839 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:21:39,842 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:21:39,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:21:39,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:21:39,855 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-09-10 02:21:39,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:39,876 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2019-09-10 02:21:39,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:21:39,878 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-10 02:21:39,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:39,887 INFO L225 Difference]: With dead ends: 26 [2019-09-10 02:21:39,887 INFO L226 Difference]: Without dead ends: 21 [2019-09-10 02:21:39,889 INFO L628 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 [2019-09-10 02:21:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-10 02:21:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-10 02:21:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-10 02:21:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2019-09-10 02:21:39,927 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 10 [2019-09-10 02:21:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:39,927 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2019-09-10 02:21:39,927 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:21:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2019-09-10 02:21:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-10 02:21:39,928 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:39,928 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:39,928 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:39,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:39,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1587685074, now seen corresponding path program 1 times [2019-09-10 02:21:39,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:39,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:39,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:39,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:39,933 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:39,949 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:39,949 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:39,950 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 [2019-09-10 02:21:39,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:39,961 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 02:21:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:39,975 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 02:21:39,976 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 02:21:39,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:39,976 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:39,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:39,989 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:21:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:40,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-10 02:21:40,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:21:40,104 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:21:40,174 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:21:40,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-10 02:21:40,175 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:21:40,176 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:21:40,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:21:40,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:21:40,177 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand 5 states. [2019-09-10 02:21:40,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:40,273 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2019-09-10 02:21:40,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:21:40,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-10 02:21:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:40,276 INFO L225 Difference]: With dead ends: 35 [2019-09-10 02:21:40,276 INFO L226 Difference]: Without dead ends: 35 [2019-09-10 02:21:40,277 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:21:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-10 02:21:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-09-10 02:21:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-10 02:21:40,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-09-10 02:21:40,291 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 10 [2019-09-10 02:21:40,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:40,291 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-09-10 02:21:40,292 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:21:40,292 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-09-10 02:21:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-10 02:21:40,293 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:40,293 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:40,293 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:40,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:40,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1592529048, now seen corresponding path program 1 times [2019-09-10 02:21:40,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:40,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:40,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:40,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:40,295 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:40,301 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:40,302 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:40,302 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:21:40,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:40,313 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 02:21:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:40,337 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2019-09-10 02:21:40,339 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54] [2019-09-10 02:21:40,384 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:21:40,384 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:21:40,502 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:21:40,503 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 38 root evaluator evaluations with a maximum evaluation depth of 7. Performed 38 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 10 variables. [2019-09-10 02:21:40,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:40,507 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:21:40,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:40,507 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:40,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:40,528 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:21:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:40,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-10 02:21:40,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:21:40,600 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:21:40,670 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:21:40,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-10 02:21:40,671 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:21:40,671 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:21:40,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:21:40,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:21:40,672 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 5 states. [2019-09-10 02:21:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:40,748 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2019-09-10 02:21:40,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:21:40,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-09-10 02:21:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:40,750 INFO L225 Difference]: With dead ends: 39 [2019-09-10 02:21:40,750 INFO L226 Difference]: Without dead ends: 39 [2019-09-10 02:21:40,750 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:21:40,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-10 02:21:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2019-09-10 02:21:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-10 02:21:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2019-09-10 02:21:40,759 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 15 [2019-09-10 02:21:40,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:40,759 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2019-09-10 02:21:40,760 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:21:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2019-09-10 02:21:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 02:21:40,761 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:40,761 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:40,761 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:40,762 INFO L82 PathProgramCache]: Analyzing trace with hash 2040988462, now seen corresponding path program 1 times [2019-09-10 02:21:40,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:40,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:40,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:40,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:40,763 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:40,769 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:40,769 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:40,770 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:21:40,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:40,785 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 02:21:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:40,797 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-09-10 02:21:40,797 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54], [55], [56] [2019-09-10 02:21:40,799 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:21:40,800 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:21:40,855 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:21:40,855 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 38 root evaluator evaluations with a maximum evaluation depth of 7. Performed 38 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 10 variables. [2019-09-10 02:21:40,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:40,856 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:21:40,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:40,856 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 02:21:40,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:40,873 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:40,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-10 02:21:40,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 02:21:40,922 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 02:21:40,970 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:21:40,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-10 02:21:40,971 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:21:40,971 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:21:40,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:21:40,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:21:40,972 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand 5 states. [2019-09-10 02:21:41,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:41,043 INFO L93 Difference]: Finished difference Result 61 states and 89 transitions. [2019-09-10 02:21:41,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:21:41,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-10 02:21:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:41,047 INFO L225 Difference]: With dead ends: 61 [2019-09-10 02:21:41,047 INFO L226 Difference]: Without dead ends: 59 [2019-09-10 02:21:41,048 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:21:41,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-09-10 02:21:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-09-10 02:21:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-09-10 02:21:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2019-09-10 02:21:41,063 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 20 [2019-09-10 02:21:41,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:41,064 INFO L475 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2019-09-10 02:21:41,064 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:21:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2019-09-10 02:21:41,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-10 02:21:41,068 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:41,069 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:41,069 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash 113727669, now seen corresponding path program 1 times [2019-09-10 02:21:41,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:41,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:41,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:41,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:41,072 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:41,082 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:41,085 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:41,085 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:21:41,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:41,101 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 02:21:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:41,113 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2019-09-10 02:21:41,113 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54], [55], [56], [57], [58] [2019-09-10 02:21:41,117 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:21:41,117 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:21:41,140 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:21:41,140 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 38 root evaluator evaluations with a maximum evaluation depth of 7. Performed 38 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 10 variables. [2019-09-10 02:21:41,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:41,140 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:21:41,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:41,141 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:41,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:41,157 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:21:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:41,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-10 02:21:41,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-10 02:21:41,215 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-10 02:21:41,245 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:21:41,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-09-10 02:21:41,246 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:21:41,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:21:41,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:21:41,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:21:41,248 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand 5 states. [2019-09-10 02:21:41,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:41,293 INFO L93 Difference]: Finished difference Result 63 states and 87 transitions. [2019-09-10 02:21:41,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:21:41,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-09-10 02:21:41,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:41,295 INFO L225 Difference]: With dead ends: 63 [2019-09-10 02:21:41,295 INFO L226 Difference]: Without dead ends: 63 [2019-09-10 02:21:41,295 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:21:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-09-10 02:21:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-09-10 02:21:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-09-10 02:21:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 87 transitions. [2019-09-10 02:21:41,305 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 87 transitions. Word has length 26 [2019-09-10 02:21:41,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:41,305 INFO L475 AbstractCegarLoop]: Abstraction has 63 states and 87 transitions. [2019-09-10 02:21:41,305 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:21:41,305 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 87 transitions. [2019-09-10 02:21:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-10 02:21:41,306 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:41,307 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:41,307 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:41,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:41,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1597054094, now seen corresponding path program 1 times [2019-09-10 02:21:41,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:41,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:41,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:41,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:41,309 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:41,314 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:41,314 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:41,314 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:21:41,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:41,329 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 02:21:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:41,345 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2019-09-10 02:21:41,345 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [21], [24], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54], [55], [56], [57] [2019-09-10 02:21:41,350 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:21:41,350 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:21:41,390 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:21:41,391 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 38 root evaluator evaluations with a maximum evaluation depth of 7. Performed 38 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 10 variables. [2019-09-10 02:21:41,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:41,391 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:21:41,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:41,391 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 02:21:41,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:41,410 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:41,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-10 02:21:41,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-10 02:21:41,465 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (11)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 02:21:41,558 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:21:41,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-10 02:21:41,559 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:21:41,559 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:21:41,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:21:41,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:21:41,560 INFO L87 Difference]: Start difference. First operand 63 states and 87 transitions. Second operand 5 states. [2019-09-10 02:21:41,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:41,621 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2019-09-10 02:21:41,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:21:41,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-09-10 02:21:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:41,623 INFO L225 Difference]: With dead ends: 71 [2019-09-10 02:21:41,623 INFO L226 Difference]: Without dead ends: 70 [2019-09-10 02:21:41,624 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:21:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-09-10 02:21:41,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2019-09-10 02:21:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-09-10 02:21:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2019-09-10 02:21:41,640 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 28 [2019-09-10 02:21:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:41,641 INFO L475 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2019-09-10 02:21:41,641 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:21:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2019-09-10 02:21:41,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-10 02:21:41,643 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:41,645 INFO L399 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:41,646 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:41,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:41,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1857063759, now seen corresponding path program 1 times [2019-09-10 02:21:41,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:41,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:41,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:41,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:41,649 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:41,667 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:41,667 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:41,667 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-10 02:21:41,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:41,693 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:21:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:41,708 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 32 with the following transitions: [2019-09-10 02:21:41,708 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54], [55], [56], [57], [58], [59], [60] [2019-09-10 02:21:41,714 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:21:41,714 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:21:41,744 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:21:41,745 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 38 root evaluator evaluations with a maximum evaluation depth of 7. Performed 38 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 10 variables. [2019-09-10 02:21:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:41,745 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:21:41,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:41,745 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 02:21:41,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:41,766 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:41,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-10 02:21:41,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-10 02:21:41,834 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-10 02:21:41,920 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:21:41,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-09-10 02:21:41,920 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:21:41,921 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:21:41,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:21:41,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:21:41,922 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand 6 states. [2019-09-10 02:21:42,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:42,042 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2019-09-10 02:21:42,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:21:42,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-09-10 02:21:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:42,043 INFO L225 Difference]: With dead ends: 79 [2019-09-10 02:21:42,044 INFO L226 Difference]: Without dead ends: 77 [2019-09-10 02:21:42,044 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-09-10 02:21:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-09-10 02:21:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2019-09-10 02:21:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-09-10 02:21:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2019-09-10 02:21:42,052 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 31 [2019-09-10 02:21:42,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:42,052 INFO L475 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2019-09-10 02:21:42,052 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:21:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2019-09-10 02:21:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-10 02:21:42,053 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:42,054 INFO L399 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:42,054 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:42,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash -493170476, now seen corresponding path program 2 times [2019-09-10 02:21:42,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:42,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:42,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:42,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:42,056 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:42,060 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:42,061 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:42,061 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:21:42,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 02:21:42,084 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 02:21:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:42,096 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 02:21:42,096 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 02:21:42,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:42,096 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:42,116 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 02:21:42,117 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 02:21:42,140 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-10 02:21:42,140 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 02:21:42,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-10 02:21:42,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-10 02:21:42,204 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-10 02:21:42,269 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-10 02:21:42,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-09-10 02:21:42,270 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 02:21:42,270 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 02:21:42,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 02:21:42,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:21:42,271 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 10 states. [2019-09-10 02:21:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:42,556 INFO L93 Difference]: Finished difference Result 98 states and 128 transitions. [2019-09-10 02:21:42,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:21:42,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2019-09-10 02:21:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:42,564 INFO L225 Difference]: With dead ends: 98 [2019-09-10 02:21:42,564 INFO L226 Difference]: Without dead ends: 97 [2019-09-10 02:21:42,565 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:21:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-09-10 02:21:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2019-09-10 02:21:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-09-10 02:21:42,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2019-09-10 02:21:42,574 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 33 [2019-09-10 02:21:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:42,574 INFO L475 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2019-09-10 02:21:42,574 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 02:21:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2019-09-10 02:21:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-10 02:21:42,576 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:42,576 INFO L399 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:42,576 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:42,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1383929332, now seen corresponding path program 1 times [2019-09-10 02:21:42,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:42,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:42,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 02:21:42,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:42,578 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:42,582 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:42,583 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:42,583 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:21:42,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:42,597 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 02:21:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:42,611 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2019-09-10 02:21:42,611 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [21], [24], [26], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54], [55], [56], [57] [2019-09-10 02:21:42,615 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:21:42,615 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:21:42,628 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:21:42,628 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 38 root evaluator evaluations with a maximum evaluation depth of 7. Performed 38 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 10 variables. [2019-09-10 02:21:42,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:42,629 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:21:42,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:42,629 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:42,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:42,645 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:21:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:42,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-10 02:21:42,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-10 02:21:42,761 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-10 02:21:42,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:21:42,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-10 02:21:42,860 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:21:42,860 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:21:42,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:21:42,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:21:42,861 INFO L87 Difference]: Start difference. First operand 95 states and 123 transitions. Second operand 5 states. [2019-09-10 02:21:42,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:42,921 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2019-09-10 02:21:42,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:21:42,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-09-10 02:21:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:42,923 INFO L225 Difference]: With dead ends: 99 [2019-09-10 02:21:42,923 INFO L226 Difference]: Without dead ends: 98 [2019-09-10 02:21:42,927 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-09-10 02:21:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-09-10 02:21:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2019-09-10 02:21:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-09-10 02:21:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 121 transitions. [2019-09-10 02:21:42,949 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 121 transitions. Word has length 46 [2019-09-10 02:21:42,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:42,950 INFO L475 AbstractCegarLoop]: Abstraction has 96 states and 121 transitions. [2019-09-10 02:21:42,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:21:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 121 transitions. [2019-09-10 02:21:42,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-10 02:21:42,952 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:42,952 INFO L399 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:42,955 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:42,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:42,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1196309741, now seen corresponding path program 1 times [2019-09-10 02:21:42,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:42,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:42,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:42,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:42,957 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:42,966 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:42,966 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:42,966 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:21:42,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:42,989 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 02:21:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:43,003 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2019-09-10 02:21:43,004 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [21], [24], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54], [55], [56], [57], [58], [59], [60] [2019-09-10 02:21:43,008 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:21:43,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:21:43,029 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:21:43,030 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 38 root evaluator evaluations with a maximum evaluation depth of 7. Performed 38 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 10 variables. [2019-09-10 02:21:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:43,030 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:21:43,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:43,030 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:43,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:43,053 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:21:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:43,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-10 02:21:43,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:43,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 02:21:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-09-10 02:21:43,161 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:43,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 02:21:43,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 02:21:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-09-10 02:21:43,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-10 02:21:43,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-10 02:21:43,271 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 02:21:43,271 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-10 02:21:43,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-10 02:21:43,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:21:43,272 INFO L87 Difference]: Start difference. First operand 96 states and 121 transitions. Second operand 13 states. [2019-09-10 02:21:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:43,453 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2019-09-10 02:21:43,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 02:21:43,454 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2019-09-10 02:21:43,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:43,455 INFO L225 Difference]: With dead ends: 107 [2019-09-10 02:21:43,455 INFO L226 Difference]: Without dead ends: 103 [2019-09-10 02:21:43,456 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2019-09-10 02:21:43,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-09-10 02:21:43,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-09-10 02:21:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-09-10 02:21:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2019-09-10 02:21:43,464 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 49 [2019-09-10 02:21:43,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:43,464 INFO L475 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2019-09-10 02:21:43,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-10 02:21:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2019-09-10 02:21:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-10 02:21:43,466 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:21:43,467 INFO L399 BasicCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:21:43,467 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:21:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1737231151, now seen corresponding path program 1 times [2019-09-10 02:21:43,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:21:43,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:43,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:43,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:21:43,468 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:21:43,473 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:21:43,473 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:21:43,473 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:21:43,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:43,493 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 02:21:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:43,510 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 60 with the following transitions: [2019-09-10 02:21:43,510 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [21], [26], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54], [55], [56], [57], [58], [59], [60], [61], [62], [63], [64] [2019-09-10 02:21:43,513 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:21:43,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:21:43,525 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:21:43,525 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 38 root evaluator evaluations with a maximum evaluation depth of 7. Performed 38 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 10 variables. [2019-09-10 02:21:43,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:21:43,526 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:21:43,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:21:43,526 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:21:43,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:21:43,548 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:21:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:21:43,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-10 02:21:43,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:21:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2019-09-10 02:21:43,607 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:21:43,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 02:21:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2019-09-10 02:21:43,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-10 02:21:43,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2019-09-10 02:21:43,700 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 02:21:43,701 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-10 02:21:43,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-10 02:21:43,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:21:43,702 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand 9 states. [2019-09-10 02:21:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:21:43,829 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2019-09-10 02:21:43,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:21:43,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2019-09-10 02:21:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:21:43,830 INFO L225 Difference]: With dead ends: 106 [2019-09-10 02:21:43,830 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:21:43,830 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-09-10 02:21:43,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:21:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:21:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:21:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:21:43,831 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2019-09-10 02:21:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:21:43,832 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:21:43,832 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-10 02:21:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:21:43,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:21:43,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:21:43 BoogieIcfgContainer [2019-09-10 02:21:43,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:21:43,840 INFO L168 Benchmark]: Toolchain (without parser) took 4909.05 ms. Allocated memory was 141.0 MB in the beginning and 256.4 MB in the end (delta: 115.3 MB). Free memory was 88.2 MB in the beginning and 103.0 MB in the end (delta: -14.9 MB). Peak memory consumption was 100.5 MB. Max. memory is 7.1 GB. [2019-09-10 02:21:43,841 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 106.7 MB in the beginning and 106.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:21:43,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.33 ms. Allocated memory is still 141.0 MB. Free memory was 87.7 MB in the beginning and 78.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:21:43,843 INFO L168 Benchmark]: Boogie Preprocessor took 121.55 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 78.1 MB in the beginning and 178.9 MB in the end (delta: -100.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:21:43,844 INFO L168 Benchmark]: RCFGBuilder took 250.61 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 166.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-10 02:21:43,844 INFO L168 Benchmark]: TraceAbstraction took 4250.85 ms. Allocated memory was 201.3 MB in the beginning and 256.4 MB in the end (delta: 55.1 MB). Free memory was 166.6 MB in the beginning and 103.0 MB in the end (delta: 63.5 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:21:43,848 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 106.7 MB in the beginning and 106.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.33 ms. Allocated memory is still 141.0 MB. Free memory was 87.7 MB in the beginning and 78.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.55 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 78.1 MB in the beginning and 178.9 MB in the end (delta: -100.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 250.61 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 166.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4250.85 ms. Allocated memory was 201.3 MB in the beginning and 256.4 MB in the end (delta: 55.1 MB). Free memory was 166.6 MB in the beginning and 103.0 MB in the end (delta: 63.5 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 4.1s OverallTime, 11 OverallIterations, 10 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 291 SDtfs, 96 SDslu, 791 SDs, 0 SdLazy, 578 SolverSat, 69 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 642 GetRequests, 548 SyntacticMatches, 7 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 8 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 644 NumberOfCodeBlocks, 634 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 623 ConstructedInterpolants, 20 QuantifiedInterpolants, 76069 SizeOfPredicates, 45 NumberOfNonLiveVariables, 815 ConjunctsInSsa, 150 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 884/934 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...