java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-multidimensional/diff-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:37:31,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:37:31,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:37:31,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:37:31,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:37:31,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:37:31,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:37:31,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:37:31,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:37:31,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:37:31,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:37:31,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:37:31,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:37:31,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:37:31,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:37:31,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:37:31,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:37:31,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:37:31,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:37:31,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:37:31,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:37:31,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:37:31,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:37:31,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:37:31,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:37:31,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:37:31,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:37:31,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:37:31,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:37:31,724 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:37:31,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:37:31,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:37:31,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:37:31,726 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:37:31,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:37:31,726 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:37:31,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:37:31,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:37:31,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:37:31,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:37:31,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:37:31,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:37:31,728 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:37:31,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:37:31,728 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:37:31,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:37:31,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:37:31,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:37:31,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:37:31,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:37:31,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:37:31,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:37:31,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:37:31,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:37:31,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:37:31,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:37:31,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:37:31,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:37:32,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:37:32,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:37:32,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:37:32,045 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:37:32,046 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:37:32,047 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/diff-3-n-u.c [2019-10-13 21:37:32,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70265a70/728b15e8a216446682f70b2c18c248da/FLAG39f12943c [2019-10-13 21:37:32,626 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:37:32,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/diff-3-n-u.c [2019-10-13 21:37:32,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70265a70/728b15e8a216446682f70b2c18c248da/FLAG39f12943c [2019-10-13 21:37:32,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70265a70/728b15e8a216446682f70b2c18c248da [2019-10-13 21:37:32,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:37:32,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:37:32,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:32,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:37:33,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:37:33,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:32" (1/1) ... [2019-10-13 21:37:33,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5f6572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33, skipping insertion in model container [2019-10-13 21:37:33,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:32" (1/1) ... [2019-10-13 21:37:33,016 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:37:33,040 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:37:33,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:33,250 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:37:33,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:33,390 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:37:33,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33 WrapperNode [2019-10-13 21:37:33,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:33,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:37:33,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:37:33,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:37:33,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33" (1/1) ... [2019-10-13 21:37:33,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33" (1/1) ... [2019-10-13 21:37:33,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33" (1/1) ... [2019-10-13 21:37:33,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33" (1/1) ... [2019-10-13 21:37:33,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33" (1/1) ... [2019-10-13 21:37:33,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33" (1/1) ... [2019-10-13 21:37:33,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33" (1/1) ... [2019-10-13 21:37:33,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:37:33,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:37:33,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:37:33,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:37:33,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:37:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:37:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:37:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:37:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:37:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:37:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:37:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 21:37:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:37:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:37:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:37:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:37:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:37:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:37:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:37:33,971 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:37:33,971 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-13 21:37:33,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:33 BoogieIcfgContainer [2019-10-13 21:37:33,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:37:33,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:37:33,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:37:33,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:37:33,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:37:32" (1/3) ... [2019-10-13 21:37:33,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1368f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:33, skipping insertion in model container [2019-10-13 21:37:33,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:33" (2/3) ... [2019-10-13 21:37:33,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1368f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:33, skipping insertion in model container [2019-10-13 21:37:33,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:33" (3/3) ... [2019-10-13 21:37:33,982 INFO L109 eAbstractionObserver]: Analyzing ICFG diff-3-n-u.c [2019-10-13 21:37:33,992 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:37:34,002 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:37:34,014 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:37:34,044 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:37:34,045 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:37:34,045 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:37:34,045 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:37:34,045 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:37:34,045 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:37:34,046 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:37:34,046 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:37:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-13 21:37:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:37:34,069 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:34,070 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:34,073 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:34,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:34,079 INFO L82 PathProgramCache]: Analyzing trace with hash -56735169, now seen corresponding path program 1 times [2019-10-13 21:37:34,089 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:34,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725547028] [2019-10-13 21:37:34,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:34,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:34,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:34,166 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:34,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242555955] [2019-10-13 21:37:34,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:34,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:34,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:37:34,300 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:37:34,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725547028] [2019-10-13 21:37:34,324 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:34,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242555955] [2019-10-13 21:37:34,326 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:34,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 21:37:34,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733622298] [2019-10-13 21:37:34,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:37:34,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:34,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:37:34,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:37:34,349 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2019-10-13 21:37:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:34,467 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2019-10-13 21:37:34,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:37:34,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-13 21:37:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:34,490 INFO L225 Difference]: With dead ends: 46 [2019-10-13 21:37:34,490 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 21:37:34,497 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:37:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 21:37:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-13 21:37:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 21:37:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-10-13 21:37:34,570 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 14 [2019-10-13 21:37:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:34,572 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-10-13 21:37:34,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:37:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-10-13 21:37:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:37:34,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:34,574 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:34,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:34,778 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:34,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:34,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2078702025, now seen corresponding path program 1 times [2019-10-13 21:37:34,779 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:34,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020041393] [2019-10-13 21:37:34,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:34,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:34,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:34,807 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:34,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105817940] [2019-10-13 21:37:34,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:34,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:34,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:37:34,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:37:34,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020041393] [2019-10-13 21:37:34,916 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:34,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105817940] [2019-10-13 21:37:34,917 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:34,917 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:37:34,917 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829734477] [2019-10-13 21:37:34,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:37:34,920 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:34,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:37:34,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:37:34,921 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2019-10-13 21:37:35,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:35,084 INFO L93 Difference]: Finished difference Result 60 states and 92 transitions. [2019-10-13 21:37:35,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:37:35,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-10-13 21:37:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:35,091 INFO L225 Difference]: With dead ends: 60 [2019-10-13 21:37:35,091 INFO L226 Difference]: Without dead ends: 42 [2019-10-13 21:37:35,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:37:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-13 21:37:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-10-13 21:37:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-13 21:37:35,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 55 transitions. [2019-10-13 21:37:35,123 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 55 transitions. Word has length 18 [2019-10-13 21:37:35,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:35,123 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 55 transitions. [2019-10-13 21:37:35,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:37:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2019-10-13 21:37:35,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 21:37:35,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:35,125 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:35,331 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:35,332 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:35,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1575875141, now seen corresponding path program 1 times [2019-10-13 21:37:35,334 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:35,334 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800140632] [2019-10-13 21:37:35,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:35,335 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:35,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:35,344 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:35,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508023719] [2019-10-13 21:37:35,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 21:37:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:35,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:35,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:37:35,427 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:37:35,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800140632] [2019-10-13 21:37:35,459 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:35,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508023719] [2019-10-13 21:37:35,460 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:35,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:37:35,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757492249] [2019-10-13 21:37:35,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:37:35,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:35,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:37:35,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:37:35,464 INFO L87 Difference]: Start difference. First operand 40 states and 55 transitions. Second operand 6 states. [2019-10-13 21:37:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:35,562 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2019-10-13 21:37:35,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:37:35,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-10-13 21:37:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:35,564 INFO L225 Difference]: With dead ends: 94 [2019-10-13 21:37:35,564 INFO L226 Difference]: Without dead ends: 62 [2019-10-13 21:37:35,565 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:37:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-10-13 21:37:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2019-10-13 21:37:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-13 21:37:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2019-10-13 21:37:35,580 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 26 [2019-10-13 21:37:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:35,580 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2019-10-13 21:37:35,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:37:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2019-10-13 21:37:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-13 21:37:35,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:35,582 INFO L380 BasicCegarLoop]: trace histogram [8, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:35,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:35,795 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:35,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1632263227, now seen corresponding path program 1 times [2019-10-13 21:37:35,796 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:35,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574729766] [2019-10-13 21:37:35,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:35,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:35,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:35,821 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:35,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710687848] [2019-10-13 21:37:35,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:35,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:37:35,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 21:37:35,930 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 21:37:35,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574729766] [2019-10-13 21:37:35,979 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:35,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710687848] [2019-10-13 21:37:35,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1250623696] [2019-10-13 21:37:36,023 INFO L162 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-10-13 21:37:36,023 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:36,030 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:36,040 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:36,040 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:36,299 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:41,406 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2019-10-13 21:37:41,419 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:41,438 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:41,438 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:41,439 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 361#false [2019-10-13 21:37:41,439 INFO L193 IcfgInterpreter]: Reachable states at location L46-2 satisfy 212#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:41,439 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 365#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:41,439 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 207#true [2019-10-13 21:37:41,440 INFO L193 IcfgInterpreter]: Reachable states at location L69-2 satisfy 222#(and (<= 0 main_~j~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~m~0 0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:41,440 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 351#false [2019-10-13 21:37:41,442 INFO L193 IcfgInterpreter]: Reachable states at location L71-2 satisfy 227#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (< main_~i~0 main_~m~0) (<= main_~i~0 0) (<= main_~m~0 0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:41,442 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:41,442 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:41,443 INFO L193 IcfgInterpreter]: Reachable states at location L29-2 satisfy 342#(and (or (and (<= 0 main_~j~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~j~0 0)) (and (<= 0 main_~n~0) (<= 1 main_~j~0) (not (< main_~k~0 main_~p~0)))) (<= 0 main_~k~0)) [2019-10-13 21:37:41,443 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 370#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:41,443 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:41,446 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 337#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~k~0)) [2019-10-13 21:37:41,446 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 356#false [2019-10-13 21:37:41,446 INFO L193 IcfgInterpreter]: Reachable states at location L72 satisfy 232#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (= |main_#t~mem4| (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)) |main_~#A~0.offset|))) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (< main_~i~0 main_~m~0) (<= main_~i~0 0) (<= 0 main_~p~0) (= (select (select |#memory_int| |main_~#B~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) |main_~#B~0.offset| (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)))) |main_#t~mem5|) (< main_~k~0 main_~p~0) (<= main_~m~0 0) (= (select (select |#memory_int| |main_~#C~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) |main_~#C~0.offset| (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)))) |main_#t~mem6|) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:41,446 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 346#false [2019-10-13 21:37:41,447 INFO L193 IcfgInterpreter]: Reachable states at location L66-2 satisfy 217#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~m~0 0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:41,723 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:37:41,723 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 6] total 18 [2019-10-13 21:37:41,723 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206640273] [2019-10-13 21:37:41,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:37:41,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:41,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:37:41,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:37:41,726 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 10 states. [2019-10-13 21:37:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:42,196 INFO L93 Difference]: Finished difference Result 93 states and 118 transitions. [2019-10-13 21:37:42,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:37:42,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2019-10-13 21:37:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:42,198 INFO L225 Difference]: With dead ends: 93 [2019-10-13 21:37:42,198 INFO L226 Difference]: Without dead ends: 68 [2019-10-13 21:37:42,199 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:37:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-13 21:37:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2019-10-13 21:37:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-13 21:37:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2019-10-13 21:37:42,217 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 34 [2019-10-13 21:37:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:42,217 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2019-10-13 21:37:42,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:37:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2019-10-13 21:37:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-13 21:37:42,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:42,219 INFO L380 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:42,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:42,424 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:42,424 INFO L82 PathProgramCache]: Analyzing trace with hash 2005353240, now seen corresponding path program 1 times [2019-10-13 21:37:42,424 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:42,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980913333] [2019-10-13 21:37:42,424 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:42,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:42,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:42,434 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:42,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140464888] [2019-10-13 21:37:42,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 21:37:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:42,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:37:42,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-13 21:37:42,551 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-13 21:37:42,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980913333] [2019-10-13 21:37:42,587 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:42,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140464888] [2019-10-13 21:37:42,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638114061] [2019-10-13 21:37:42,593 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:37:42,593 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:42,594 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:42,594 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:42,594 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:42,637 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:49,128 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2019-10-13 21:37:49,135 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:49,138 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:49,138 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:49,138 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 1106#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#B~0.base_BEFORE_CALL_2| Int) (v_prenex_6 Int) (|v_main_~#C~0.base_BEFORE_CALL_2| Int) (v_prenex_4 Int) (v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 Int) (|v_main_~#C~0.offset_BEFORE_CALL_2| Int) (v_prenex_1 Int) (|v_main_~#B~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (mod (select (select |#memory_int| |v_main_~#C~0.base_BEFORE_CALL_2|) |v_main_~#C~0.offset_BEFORE_CALL_2|) 4294967296) (mod (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) |v_main_~#A~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) |v_main_~#B~0.offset_BEFORE_CALL_2|)) 4294967296))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| v_prenex_1) v_prenex_2) 4294967296) (mod (+ (select (select |#memory_int| v_prenex_6) v_prenex_4) (select (select |#memory_int| v_prenex_5) v_prenex_3)) 4294967296)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:49,139 INFO L193 IcfgInterpreter]: Reachable states at location L46-2 satisfy 692#(and (or (and (<= 0 main_~m~0) (<= 1 main_~i~0) (not (< main_~j~0 main_~n~0))) (and (<= 0 main_~i~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0))) (and (<= 0 main_~j~0) (<= 0 main_~k~0))) [2019-10-13 21:37:49,139 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 1110#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:49,139 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 207#true [2019-10-13 21:37:49,139 INFO L193 IcfgInterpreter]: Reachable states at location L69-2 satisfy 759#(and (<= 0 main_~j~0) (<= 0 main_~m~0) (and (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (= main_~i~0 0)) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0)) [2019-10-13 21:37:49,139 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 1096#(and (exists ((|v_main_~#B~0.base_BEFORE_CALL_2| Int) (v_prenex_6 Int) (|v_main_~#C~0.base_BEFORE_CALL_2| Int) (v_prenex_4 Int) (v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 Int) (|v_main_~#C~0.offset_BEFORE_CALL_2| Int) (v_prenex_1 Int) (|v_main_~#B~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (mod (select (select |#memory_int| |v_main_~#C~0.base_BEFORE_CALL_2|) |v_main_~#C~0.offset_BEFORE_CALL_2|) 4294967296) (mod (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) |v_main_~#A~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) |v_main_~#B~0.offset_BEFORE_CALL_2|)) 4294967296))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| v_prenex_1) v_prenex_2) 4294967296) (mod (+ (select (select |#memory_int| v_prenex_6) v_prenex_4) (select (select |#memory_int| v_prenex_5) v_prenex_3)) 4294967296)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:49,140 INFO L193 IcfgInterpreter]: Reachable states at location L49-2 satisfy 687#(and (<= 0 main_~j~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0)) [2019-10-13 21:37:49,140 INFO L193 IcfgInterpreter]: Reachable states at location L71-2 satisfy 754#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~k~0) (and (<= 0 main_~i~0) (< main_~j~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (= main_~i~0 0)) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0)) [2019-10-13 21:37:49,140 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:49,140 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:49,141 INFO L193 IcfgInterpreter]: Reachable states at location L29-2 satisfy 1087#(and (or (and (<= 0 main_~j~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~j~0 0)) (and (<= 0 main_~n~0) (<= 1 main_~j~0) (not (< main_~k~0 main_~p~0)))) (<= 0 main_~k~0)) [2019-10-13 21:37:49,141 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 1115#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:49,141 INFO L193 IcfgInterpreter]: Reachable states at location L51-2 satisfy 978#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0)) [2019-10-13 21:37:49,141 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:49,141 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 1082#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~k~0)) [2019-10-13 21:37:49,142 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 1101#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#B~0.base_BEFORE_CALL_2| Int) (v_prenex_6 Int) (|v_main_~#C~0.base_BEFORE_CALL_2| Int) (v_prenex_4 Int) (v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 Int) (|v_main_~#C~0.offset_BEFORE_CALL_2| Int) (v_prenex_1 Int) (|v_main_~#B~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (mod (select (select |#memory_int| |v_main_~#C~0.base_BEFORE_CALL_2|) |v_main_~#C~0.offset_BEFORE_CALL_2|) 4294967296) (mod (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) |v_main_~#A~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) |v_main_~#B~0.offset_BEFORE_CALL_2|)) 4294967296))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| v_prenex_1) v_prenex_2) 4294967296) (mod (+ (select (select |#memory_int| v_prenex_6) v_prenex_4) (select (select |#memory_int| v_prenex_5) v_prenex_3)) 4294967296)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:49,142 INFO L193 IcfgInterpreter]: Reachable states at location L72 satisfy 744#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~k~0) (and (= (select (select |#memory_int| |main_~#B~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) |main_~#B~0.offset| (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)))) |main_#t~mem5|) (= |main_#t~mem4| (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)) |main_~#A~0.offset|))) (< main_~k~0 main_~p~0) (<= 0 main_~i~0) (< main_~j~0 main_~n~0) (= (select (select |#memory_int| |main_~#C~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) |main_~#C~0.offset| (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)))) |main_#t~mem6|) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (= main_~i~0 0)) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (<= 0 main_~p~0)) [2019-10-13 21:37:49,142 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 1091#(exists ((|v_main_~#B~0.base_BEFORE_CALL_2| Int) (v_prenex_6 Int) (|v_main_~#C~0.base_BEFORE_CALL_2| Int) (v_prenex_4 Int) (v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 Int) (|v_main_~#C~0.offset_BEFORE_CALL_2| Int) (v_prenex_1 Int) (|v_main_~#B~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (mod (select (select |#memory_int| |v_main_~#C~0.base_BEFORE_CALL_2|) |v_main_~#C~0.offset_BEFORE_CALL_2|) 4294967296) (mod (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) |v_main_~#A~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) |v_main_~#B~0.offset_BEFORE_CALL_2|)) 4294967296))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| v_prenex_1) v_prenex_2) 4294967296) (mod (+ (select (select |#memory_int| v_prenex_6) v_prenex_4) (select (select |#memory_int| v_prenex_5) v_prenex_3)) 4294967296)))))) [2019-10-13 21:37:49,142 INFO L193 IcfgInterpreter]: Reachable states at location L66-2 satisfy 697#(and (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0)) (or (and (<= 0 main_~m~0) (= main_~k~0 0) (= main_~j~0 0) (= main_~i~0 0)) (and (<= main_~m~0 0) (= main_~k~0 0) (= main_~j~0 0) (= main_~i~0 0)))) [2019-10-13 21:37:51,945 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:37:51,946 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 17] total 26 [2019-10-13 21:37:51,946 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134306860] [2019-10-13 21:37:51,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:37:51,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:51,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:37:51,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=549, Unknown=1, NotChecked=0, Total=650 [2019-10-13 21:37:51,948 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 26 states. [2019-10-13 21:38:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:04,082 INFO L93 Difference]: Finished difference Result 173 states and 246 transitions. [2019-10-13 21:38:04,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 21:38:04,083 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 44 [2019-10-13 21:38:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:04,085 INFO L225 Difference]: With dead ends: 173 [2019-10-13 21:38:04,085 INFO L226 Difference]: Without dead ends: 122 [2019-10-13 21:38:04,087 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=394, Invalid=1496, Unknown=2, NotChecked=0, Total=1892 [2019-10-13 21:38:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-10-13 21:38:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2019-10-13 21:38:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-13 21:38:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 143 transitions. [2019-10-13 21:38:04,137 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 143 transitions. Word has length 44 [2019-10-13 21:38:04,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:04,137 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 143 transitions. [2019-10-13 21:38:04,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:38:04,137 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 143 transitions. [2019-10-13 21:38:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-13 21:38:04,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:04,141 INFO L380 BasicCegarLoop]: trace histogram [24, 12, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:04,355 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:04,355 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:04,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:04,356 INFO L82 PathProgramCache]: Analyzing trace with hash 273005720, now seen corresponding path program 2 times [2019-10-13 21:38:04,356 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:04,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630036901] [2019-10-13 21:38:04,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:04,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:04,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:04,372 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:04,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356445959] [2019-10-13 21:38:04,373 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:04,475 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:38:04,475 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:38:04,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:38:04,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2019-10-13 21:38:04,537 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2019-10-13 21:38:04,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630036901] [2019-10-13 21:38:04,565 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:04,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356445959] [2019-10-13 21:38:04,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2091472403] [2019-10-13 21:38:04,568 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:38:04,568 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:38:04,568 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:38:04,569 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:38:04,569 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:38:04,593 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:38:06,575 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2019-10-13 21:38:06,583 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:38:06,585 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:38:06,586 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:38:06,586 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 1131#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (v_prenex_8 Int) (v_prenex_9 Int) (|v_main_~#C~0.base_BEFORE_CALL_3| Int) (v_prenex_7 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#C~0.offset_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (|v_main_~#B~0.offset_BEFORE_CALL_3| Int) (|v_main_~#A~0.offset_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (mod (select (select |#memory_int| |v_main_~#C~0.base_BEFORE_CALL_3|) |v_main_~#C~0.offset_BEFORE_CALL_3|) 4294967296) (mod (+ (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) |v_main_~#B~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) |v_main_~#A~0.offset_BEFORE_CALL_3|)) 4294967296))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| v_prenex_7) v_prenex_9) 4294967296) (mod (+ (select (select |#memory_int| v_prenex_8) v_prenex_11) (select (select |#memory_int| v_prenex_10) v_prenex_12)) 4294967296)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:06,586 INFO L193 IcfgInterpreter]: Reachable states at location L46-2 satisfy 717#(and (or (and (<= 0 main_~m~0) (<= 1 main_~i~0) (not (< main_~j~0 main_~n~0))) (and (<= 0 main_~i~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0))) (and (<= 0 main_~j~0) (<= 0 main_~k~0))) [2019-10-13 21:38:06,586 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 1135#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:38:06,587 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 232#true [2019-10-13 21:38:06,587 INFO L193 IcfgInterpreter]: Reachable states at location L69-2 satisfy 784#(and (<= 0 main_~j~0) (<= 0 main_~m~0) (and (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (= main_~i~0 0)) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0)) [2019-10-13 21:38:06,587 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 1121#(and (exists ((v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (v_prenex_8 Int) (v_prenex_9 Int) (|v_main_~#C~0.base_BEFORE_CALL_3| Int) (v_prenex_7 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#C~0.offset_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (|v_main_~#B~0.offset_BEFORE_CALL_3| Int) (|v_main_~#A~0.offset_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (mod (select (select |#memory_int| |v_main_~#C~0.base_BEFORE_CALL_3|) |v_main_~#C~0.offset_BEFORE_CALL_3|) 4294967296) (mod (+ (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) |v_main_~#B~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) |v_main_~#A~0.offset_BEFORE_CALL_3|)) 4294967296))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| v_prenex_7) v_prenex_9) 4294967296) (mod (+ (select (select |#memory_int| v_prenex_8) v_prenex_11) (select (select |#memory_int| v_prenex_10) v_prenex_12)) 4294967296)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:06,587 INFO L193 IcfgInterpreter]: Reachable states at location L49-2 satisfy 712#(and (<= 0 main_~j~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0)) [2019-10-13 21:38:06,588 INFO L193 IcfgInterpreter]: Reachable states at location L71-2 satisfy 779#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~k~0) (and (<= 0 main_~i~0) (< main_~j~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (= main_~i~0 0)) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0)) [2019-10-13 21:38:06,588 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:38:06,588 INFO L193 IcfgInterpreter]: Reachable states at location L29-2 satisfy 1112#(and (or (and (<= 0 main_~j~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~j~0 0)) (and (<= 0 main_~n~0) (<= 1 main_~j~0) (not (< main_~k~0 main_~p~0)))) (<= 0 main_~k~0)) [2019-10-13 21:38:06,588 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:38:06,589 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 1140#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:38:06,589 INFO L193 IcfgInterpreter]: Reachable states at location L51-2 satisfy 1003#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0)) [2019-10-13 21:38:06,589 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:38:06,590 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 1107#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~k~0)) [2019-10-13 21:38:06,590 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 1126#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (v_prenex_8 Int) (v_prenex_9 Int) (|v_main_~#C~0.base_BEFORE_CALL_3| Int) (v_prenex_7 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#C~0.offset_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (|v_main_~#B~0.offset_BEFORE_CALL_3| Int) (|v_main_~#A~0.offset_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (mod (select (select |#memory_int| |v_main_~#C~0.base_BEFORE_CALL_3|) |v_main_~#C~0.offset_BEFORE_CALL_3|) 4294967296) (mod (+ (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) |v_main_~#B~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) |v_main_~#A~0.offset_BEFORE_CALL_3|)) 4294967296))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| v_prenex_7) v_prenex_9) 4294967296) (mod (+ (select (select |#memory_int| v_prenex_8) v_prenex_11) (select (select |#memory_int| v_prenex_10) v_prenex_12)) 4294967296)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:06,590 INFO L193 IcfgInterpreter]: Reachable states at location L72 satisfy 769#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~k~0) (and (= (select (select |#memory_int| |main_~#B~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) |main_~#B~0.offset| (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)))) |main_#t~mem5|) (= |main_#t~mem4| (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)) |main_~#A~0.offset|))) (< main_~k~0 main_~p~0) (<= 0 main_~i~0) (< main_~j~0 main_~n~0) (= (select (select |#memory_int| |main_~#C~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) |main_~#C~0.offset| (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)))) |main_#t~mem6|) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (= main_~i~0 0)) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (<= 0 main_~p~0)) [2019-10-13 21:38:06,590 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 1116#(exists ((v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (v_prenex_8 Int) (v_prenex_9 Int) (|v_main_~#C~0.base_BEFORE_CALL_3| Int) (v_prenex_7 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#C~0.offset_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (|v_main_~#B~0.offset_BEFORE_CALL_3| Int) (|v_main_~#A~0.offset_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (mod (select (select |#memory_int| |v_main_~#C~0.base_BEFORE_CALL_3|) |v_main_~#C~0.offset_BEFORE_CALL_3|) 4294967296) (mod (+ (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) |v_main_~#B~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) |v_main_~#A~0.offset_BEFORE_CALL_3|)) 4294967296))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| v_prenex_7) v_prenex_9) 4294967296) (mod (+ (select (select |#memory_int| v_prenex_8) v_prenex_11) (select (select |#memory_int| v_prenex_10) v_prenex_12)) 4294967296)))))) [2019-10-13 21:38:06,591 INFO L193 IcfgInterpreter]: Reachable states at location L66-2 satisfy 722#(and (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0)) (or (and (<= 0 main_~m~0) (= main_~k~0 0) (= main_~j~0 0) (= main_~i~0 0)) (and (<= main_~m~0 0) (= main_~k~0 0) (= main_~j~0 0) (= main_~i~0 0)))) [2019-10-13 21:38:09,198 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:38:09,198 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 17] total 24 [2019-10-13 21:38:09,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492245135] [2019-10-13 21:38:09,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:38:09,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:38:09,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=464, Unknown=1, NotChecked=0, Total=552 [2019-10-13 21:38:09,201 INFO L87 Difference]: Start difference. First operand 117 states and 143 transitions. Second operand 24 states.