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/nla-digbench/ps6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:04:53,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:04:53,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:04:53,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:04:53,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:04:53,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:04:53,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:04:53,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:04:53,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:04:53,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:04:53,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:04:53,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:04:53,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:04:53,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:04:53,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:04:53,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:04:53,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:04:53,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:04:53,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:04:53,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:04:53,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:04:53,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:04:53,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:04:53,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:04:53,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:04:53,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:04:53,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:04:53,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:04:53,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:04:53,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:04:53,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:04:53,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:04:53,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:04:53,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:04:53,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:04:53,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:04:53,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:04:53,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:04:53,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:04:53,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:04:53,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:04:53,600 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 [2019-10-15 03:04:53,633 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:04:53,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:04:53,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:04:53,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:04:53,635 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:04:53,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:04:53,636 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:04:53,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:04:53,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:04:53,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:04:53,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:04:53,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:04:53,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:04:53,637 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:04:53,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:04:53,637 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:04:53,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:04:53,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:04:53,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:04:53,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:04:53,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:04:53,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:04:53,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:04:53,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:04:53,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:04:53,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:04:53,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:04:53,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:04:53,640 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 [2019-10-15 03:04:53,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:04:53,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:04:53,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:04:53,984 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:04:53,985 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:04:53,985 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps6.c [2019-10-15 03:04:54,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e74c6bc8/a30b7f8387e94b5e91f70b16f9f1b8bc/FLAG18af17c5a [2019-10-15 03:04:54,542 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:04:54,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps6.c [2019-10-15 03:04:54,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e74c6bc8/a30b7f8387e94b5e91f70b16f9f1b8bc/FLAG18af17c5a [2019-10-15 03:04:54,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e74c6bc8/a30b7f8387e94b5e91f70b16f9f1b8bc [2019-10-15 03:04:54,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:04:54,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:04:54,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:54,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:04:54,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:04:54,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:54" (1/1) ... [2019-10-15 03:04:54,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0146a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:54, skipping insertion in model container [2019-10-15 03:04:54,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:54" (1/1) ... [2019-10-15 03:04:54,935 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:04:54,958 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:04:55,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:55,174 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:04:55,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:55,207 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:04:55,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55 WrapperNode [2019-10-15 03:04:55,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:55,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:04:55,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:04:55,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:04:55,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55" (1/1) ... [2019-10-15 03:04:55,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55" (1/1) ... [2019-10-15 03:04:55,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55" (1/1) ... [2019-10-15 03:04:55,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55" (1/1) ... [2019-10-15 03:04:55,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55" (1/1) ... [2019-10-15 03:04:55,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55" (1/1) ... [2019-10-15 03:04:55,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55" (1/1) ... [2019-10-15 03:04:55,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:04:55,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:04:55,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:04:55,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:04:55,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55" (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 [2019-10-15 03:04:55,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:04:55,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:04:55,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:04:55,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:04:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:04:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:04:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:04:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:04:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:04:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:04:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:04:55,610 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:04:55,611 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:04:55,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:55 BoogieIcfgContainer [2019-10-15 03:04:55,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:04:55,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:04:55,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:04:55,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:04:55,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:04:54" (1/3) ... [2019-10-15 03:04:55,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9ea7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:55, skipping insertion in model container [2019-10-15 03:04:55,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:55" (2/3) ... [2019-10-15 03:04:55,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9ea7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:55, skipping insertion in model container [2019-10-15 03:04:55,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:55" (3/3) ... [2019-10-15 03:04:55,638 INFO L109 eAbstractionObserver]: Analyzing ICFG ps6.c [2019-10-15 03:04:55,656 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:04:55,672 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:04:55,691 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:04:55,723 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:04:55,724 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:04:55,727 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:04:55,727 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:04:55,727 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:04:55,728 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:04:55,730 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:04:55,731 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:04:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-15 03:04:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:55,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:55,775 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:55,777 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:55,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:55,783 INFO L82 PathProgramCache]: Analyzing trace with hash -122887910, now seen corresponding path program 1 times [2019-10-15 03:04:55,791 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:55,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686393937] [2019-10-15 03:04:55,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:55,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:55,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:04:55,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686393937] [2019-10-15 03:04:55,913 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:55,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:04:55,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69474623] [2019-10-15 03:04:55,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:04:55,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:55,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:04:55,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:04:55,935 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-15 03:04:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:55,964 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-10-15 03:04:55,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:04:55,965 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 03:04:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:55,975 INFO L225 Difference]: With dead ends: 35 [2019-10-15 03:04:55,975 INFO L226 Difference]: Without dead ends: 16 [2019-10-15 03:04:55,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:04:55,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-15 03:04:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-15 03:04:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-15 03:04:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-15 03:04:56,019 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-10-15 03:04:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:56,020 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-15 03:04:56,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:04:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-15 03:04:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:56,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:56,022 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:56,022 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:56,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:56,023 INFO L82 PathProgramCache]: Analyzing trace with hash -156194248, now seen corresponding path program 1 times [2019-10-15 03:04:56,023 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:56,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232266073] [2019-10-15 03:04:56,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:56,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:56,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:56,031 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:56,032 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516210766] [2019-10-15 03:04:56,032 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 [2019-10-15 03:04:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:56,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 03:04:56,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:04:56,169 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:04:56,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232266073] [2019-10-15 03:04:56,266 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:04:56,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516210766] [2019-10-15 03:04:56,267 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:56,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-15 03:04:56,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566341185] [2019-10-15 03:04:56,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:04:56,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:56,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:04:56,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:04:56,271 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2019-10-15 03:04:56,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:56,694 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-15 03:04:56,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:04:56,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-10-15 03:04:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:56,697 INFO L225 Difference]: With dead ends: 27 [2019-10-15 03:04:56,698 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 03:04:56,699 INFO L600 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 [2019-10-15 03:04:56,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 03:04:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-15 03:04:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:04:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-15 03:04:56,714 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2019-10-15 03:04:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:56,714 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-15 03:04:56,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:04:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-15 03:04:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-15 03:04:56,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:56,717 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:56,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:04:56,933 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:56,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:56,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1054216485, now seen corresponding path program 1 times [2019-10-15 03:04:56,934 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:56,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652604377] [2019-10-15 03:04:56,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:56,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:56,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:56,943 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:56,943 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963901795] [2019-10-15 03:04:56,943 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 [2019-10-15 03:04:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:56,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-15 03:04:56,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:57,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:04:57,330 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:57,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:58,408 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-10-15 03:04:58,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:00,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 03:05:03,353 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_main_~y~0 1))) (let ((.cse4 (* (* (* (* (* (+ (* c_main_~y~0 (- 2)) (- 2)) .cse1) .cse1) .cse1) .cse1) .cse1)) (.cse0 (* .cse1 .cse1)) (.cse2 (* (* (* (+ (* c_main_~y~0 5) 5) .cse1) .cse1) .cse1)) (.cse3 (* (* (* (* (+ (* c_main_~y~0 6) 6) .cse1) .cse1) .cse1) .cse1))) (or (not (= (+ (* (* (* .cse0 .cse1) .cse1) .cse1) c_main_~x~0) (div (+ (* .cse2 (- 1)) (* .cse3 (- 1)) .cse4 .cse0) (- 12)))) (not (= (mod (+ .cse4 .cse0 (* .cse2 11) (* .cse3 11)) (- 12)) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (let ((.cse5 (+ c_main_~y~0 1))) (= (* main_~k~0 .cse5) (* .cse5 .cse5))) (<= main_~k~0 c_main_~c~0)))))) is different from true [2019-10-15 03:05:03,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:14,048 WARN L191 SmtUtils]: Spent 5.66 s on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2019-10-15 03:05:14,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:16,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:25,181 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse8 (not (= |c___VERIFIER_assert_#in~cond| 0)))) (and (or (forall ((main_~k~0 Int) (v_main_~y~0_BEFORE_CALL_8 Int)) (let ((.cse6 (* v_main_~y~0_BEFORE_CALL_8 5)) (.cse4 (* v_main_~y~0_BEFORE_CALL_8 (- 2))) (.cse5 (* v_main_~y~0_BEFORE_CALL_8 6)) (.cse7 (+ v_main_~y~0_BEFORE_CALL_8 1))) (let ((.cse0 (* (* (* (* (+ .cse5 6) .cse7) .cse7) .cse7) .cse7)) (.cse2 (* (* (* (* (* (+ .cse4 (- 2)) .cse7) .cse7) .cse7) .cse7) .cse7)) (.cse1 (* (* (* (+ .cse6 5) .cse7) .cse7) .cse7)) (.cse3 (* .cse7 .cse7))) (or (not (= (mod (+ (* .cse0 11) (* .cse1 11) .cse2 .cse3) (- 12)) 0)) (= (+ (* 12 (div (+ (* .cse0 (- 1)) .cse2 .cse3 (* .cse1 (- 1))) (- 12))) (* v_main_~y~0_BEFORE_CALL_8 v_main_~y~0_BEFORE_CALL_8) (* (* (* (* (* .cse4 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8)) (+ (* (* (* (* .cse5 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) (* (* (* .cse6 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) (* 12 (* (* (* .cse3 .cse7) .cse7) .cse7)))) (= .cse3 (* main_~k~0 .cse7)))))) .cse8 (not (= |c___VERIFIER_assert_#in~cond| 1))) (or .cse8 (forall ((main_~k~0 Int) (v_main_~y~0_BEFORE_CALL_8 Int)) (let ((.cse18 (* v_main_~y~0_BEFORE_CALL_8 5)) (.cse16 (* v_main_~y~0_BEFORE_CALL_8 (- 2))) (.cse17 (* v_main_~y~0_BEFORE_CALL_8 6)) (.cse15 (+ v_main_~y~0_BEFORE_CALL_8 1))) (let ((.cse9 (* (* (* (* (+ .cse17 6) .cse15) .cse15) .cse15) .cse15)) (.cse11 (* (* (* (* (* (+ .cse16 (- 2)) .cse15) .cse15) .cse15) .cse15) .cse15)) (.cse10 (* (* (* (+ .cse18 5) .cse15) .cse15) .cse15)) (.cse12 (* .cse15 .cse15))) (let ((.cse14 (+ (* (* (* (* .cse17 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) (* (* (* .cse18 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) (* 12 (* (* (* .cse12 .cse15) .cse15) .cse15)))) (.cse13 (+ (* 12 (div (+ (* .cse9 (- 1)) .cse11 .cse12 (* .cse10 (- 1))) (- 12))) (* v_main_~y~0_BEFORE_CALL_8 v_main_~y~0_BEFORE_CALL_8) (* (* (* (* (* .cse16 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8)))) (or (not (= (mod (+ (* .cse9 11) (* .cse10 11) .cse11 .cse12) (- 12)) 0)) (= .cse13 .cse14) (= .cse14 .cse13) (= .cse12 (* main_~k~0 .cse15)))))))))) is different from true [2019-10-15 03:05:36,466 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse8 (not (= |c___VERIFIER_assert_#in~cond| 0)))) (and (or (forall ((main_~k~0 Int) (v_main_~y~0_BEFORE_CALL_8 Int)) (let ((.cse6 (* v_main_~y~0_BEFORE_CALL_8 5)) (.cse4 (* v_main_~y~0_BEFORE_CALL_8 (- 2))) (.cse5 (* v_main_~y~0_BEFORE_CALL_8 6)) (.cse7 (+ v_main_~y~0_BEFORE_CALL_8 1))) (let ((.cse0 (* (* (* (* (+ .cse5 6) .cse7) .cse7) .cse7) .cse7)) (.cse2 (* (* (* (* (* (+ .cse4 (- 2)) .cse7) .cse7) .cse7) .cse7) .cse7)) (.cse1 (* (* (* (+ .cse6 5) .cse7) .cse7) .cse7)) (.cse3 (* .cse7 .cse7))) (or (not (= (mod (+ (* .cse0 11) (* .cse1 11) .cse2 .cse3) (- 12)) 0)) (= (+ (* 12 (div (+ (* .cse0 (- 1)) .cse2 .cse3 (* .cse1 (- 1))) (- 12))) (* v_main_~y~0_BEFORE_CALL_8 v_main_~y~0_BEFORE_CALL_8) (* (* (* (* (* .cse4 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8)) (+ (* (* (* (* .cse5 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) (* (* (* .cse6 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) (* 12 (* (* (* .cse3 .cse7) .cse7) .cse7)))) (= .cse3 (* main_~k~0 .cse7)))))) .cse8 (not (= |c___VERIFIER_assert_#in~cond| 1))) (or .cse8 (forall ((v_prenex_2 Int) (v_prenex_3 Int)) (let ((.cse16 (* v_prenex_3 5)) (.cse18 (* v_prenex_3 (- 2))) (.cse17 (* v_prenex_3 6)) (.cse12 (+ v_prenex_3 1))) (let ((.cse13 (* (* (* (* (+ .cse17 6) .cse12) .cse12) .cse12) .cse12)) (.cse15 (* (* (* (* (* (+ .cse18 (- 2)) .cse12) .cse12) .cse12) .cse12) .cse12)) (.cse11 (* .cse12 .cse12)) (.cse14 (* (* (* (+ .cse16 5) .cse12) .cse12) .cse12))) (let ((.cse10 (+ (* 12 (div (+ (* .cse13 (- 1)) .cse15 .cse11 (* .cse14 (- 1))) (- 12))) (* v_prenex_3 v_prenex_3) (* (* (* (* (* .cse18 v_prenex_3) v_prenex_3) v_prenex_3) v_prenex_3) v_prenex_3))) (.cse9 (+ (* (* (* .cse16 v_prenex_3) v_prenex_3) v_prenex_3) (* (* (* (* .cse17 v_prenex_3) v_prenex_3) v_prenex_3) v_prenex_3) (* 12 (* (* (* .cse11 .cse12) .cse12) .cse12))))) (or (= .cse9 .cse10) (= .cse10 .cse9) (= .cse11 (* v_prenex_2 .cse12)) (not (= (mod (+ (* .cse13 11) (* .cse14 11) .cse15 .cse11) (- 12)) 0)))))))))) is different from true [2019-10-15 03:05:47,155 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (not (= |c___VERIFIER_assert_#in~cond| 0))) (.cse11 (= 0 c___VERIFIER_assert_~cond))) (and (or .cse0 (forall ((v_prenex_2 Int) (v_prenex_3 Int)) (let ((.cse8 (* v_prenex_3 5)) (.cse10 (* v_prenex_3 (- 2))) (.cse9 (* v_prenex_3 6)) (.cse4 (+ v_prenex_3 1))) (let ((.cse5 (* (* (* (* (+ .cse9 6) .cse4) .cse4) .cse4) .cse4)) (.cse7 (* (* (* (* (* (+ .cse10 (- 2)) .cse4) .cse4) .cse4) .cse4) .cse4)) (.cse3 (* .cse4 .cse4)) (.cse6 (* (* (* (+ .cse8 5) .cse4) .cse4) .cse4))) (let ((.cse2 (+ (* 12 (div (+ (* .cse5 (- 1)) .cse7 .cse3 (* .cse6 (- 1))) (- 12))) (* v_prenex_3 v_prenex_3) (* (* (* (* (* .cse10 v_prenex_3) v_prenex_3) v_prenex_3) v_prenex_3) v_prenex_3))) (.cse1 (+ (* (* (* .cse8 v_prenex_3) v_prenex_3) v_prenex_3) (* (* (* (* .cse9 v_prenex_3) v_prenex_3) v_prenex_3) v_prenex_3) (* 12 (* (* (* .cse3 .cse4) .cse4) .cse4))))) (or (= .cse1 .cse2) (= .cse2 .cse1) (= .cse3 (* v_prenex_2 .cse4)) (not (= (mod (+ (* .cse5 11) (* .cse6 11) .cse7 .cse3) (- 12)) 0))))))) .cse11) (or (forall ((main_~k~0 Int) (v_main_~y~0_BEFORE_CALL_8 Int)) (let ((.cse18 (* v_main_~y~0_BEFORE_CALL_8 5)) (.cse16 (* v_main_~y~0_BEFORE_CALL_8 (- 2))) (.cse17 (* v_main_~y~0_BEFORE_CALL_8 6)) (.cse19 (+ v_main_~y~0_BEFORE_CALL_8 1))) (let ((.cse12 (* (* (* (* (+ .cse17 6) .cse19) .cse19) .cse19) .cse19)) (.cse14 (* (* (* (* (* (+ .cse16 (- 2)) .cse19) .cse19) .cse19) .cse19) .cse19)) (.cse13 (* (* (* (+ .cse18 5) .cse19) .cse19) .cse19)) (.cse15 (* .cse19 .cse19))) (or (not (= (mod (+ (* .cse12 11) (* .cse13 11) .cse14 .cse15) (- 12)) 0)) (= (+ (* 12 (div (+ (* .cse12 (- 1)) .cse14 .cse15 (* .cse13 (- 1))) (- 12))) (* v_main_~y~0_BEFORE_CALL_8 v_main_~y~0_BEFORE_CALL_8) (* (* (* (* (* .cse16 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8)) (+ (* (* (* (* .cse17 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) (* (* (* .cse18 v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) (* 12 (* (* (* .cse15 .cse19) .cse19) .cse19)))) (= .cse15 (* main_~k~0 .cse19)))))) .cse0 (not (= |c___VERIFIER_assert_#in~cond| 1)) .cse11))) is different from true [2019-10-15 03:05:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 3 times theorem prover too weak. 3 trivial. 5 not checked. [2019-10-15 03:05:47,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652604377] [2019-10-15 03:05:47,187 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:05:47,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963901795] [2019-10-15 03:05:47,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1306518068] [2019-10-15 03:05:47,223 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-15 03:05:47,224 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:05:47,236 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:05:47,257 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:05:47,257 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:05:47,318 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs