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/ps5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:04:47,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:04:47,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:04:47,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:04:47,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:04:47,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:04:47,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:04:47,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:04:47,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:04:47,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:04:47,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:04:47,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:04:47,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:04:47,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:04:47,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:04:47,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:04:47,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:04:47,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:04:47,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:04:47,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:04:47,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:04:47,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:04:47,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:04:47,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:04:47,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:04:47,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:04:47,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:04:47,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:04:47,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:04:47,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:04:47,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:04:47,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:04:47,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:04:47,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:04:47,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:04:47,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:04:47,806 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 03:04:47,825 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:04:47,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:04:47,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:04:47,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:04:47,828 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:04:47,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:04:47,829 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:04:47,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:04:47,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:04:47,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:04:47,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:04:47,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:04:47,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:04:47,832 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:04:47,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:04:47,832 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:04:47,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:04:47,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:04:47,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:04:47,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:04:47,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:04:47,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:04:47,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:04:47,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:04:47,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:04:47,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:04:47,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:04:47,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:04:47,835 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 03:04:48,127 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:04:48,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:04:48,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:04:48,147 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:04:48,148 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:04:48,148 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps5.c [2019-10-15 03:04:48,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bcc86c18/023dda7bc1694f53bfe4dd26c1214a58/FLAG68fa7405f [2019-10-15 03:04:48,719 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:04:48,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps5.c [2019-10-15 03:04:48,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bcc86c18/023dda7bc1694f53bfe4dd26c1214a58/FLAG68fa7405f [2019-10-15 03:04:49,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bcc86c18/023dda7bc1694f53bfe4dd26c1214a58 [2019-10-15 03:04:49,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:04:49,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:04:49,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:49,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:04:49,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:04:49,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:49" (1/1) ... [2019-10-15 03:04:49,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718b796f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49, skipping insertion in model container [2019-10-15 03:04:49,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:49" (1/1) ... [2019-10-15 03:04:49,096 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:04:49,114 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:04:49,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:49,306 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:04:49,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:49,344 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:04:49,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49 WrapperNode [2019-10-15 03:04:49,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:49,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:04:49,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:04:49,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:04:49,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49" (1/1) ... [2019-10-15 03:04:49,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49" (1/1) ... [2019-10-15 03:04:49,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49" (1/1) ... [2019-10-15 03:04:49,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49" (1/1) ... [2019-10-15 03:04:49,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49" (1/1) ... [2019-10-15 03:04:49,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49" (1/1) ... [2019-10-15 03:04:49,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49" (1/1) ... [2019-10-15 03:04:49,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:04:49,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:04:49,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:04:49,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:04:49,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49" (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 03:04:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:04:49,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:04:49,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:04:49,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:04:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:04:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:04:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:04:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:04:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:04:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:04:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:04:49,797 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:04:49,798 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:04:49,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:49 BoogieIcfgContainer [2019-10-15 03:04:49,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:04:49,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:04:49,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:04:49,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:04:49,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:04:49" (1/3) ... [2019-10-15 03:04:49,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ab7d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:49, skipping insertion in model container [2019-10-15 03:04:49,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:49" (2/3) ... [2019-10-15 03:04:49,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ab7d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:49, skipping insertion in model container [2019-10-15 03:04:49,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:49" (3/3) ... [2019-10-15 03:04:49,827 INFO L109 eAbstractionObserver]: Analyzing ICFG ps5.c [2019-10-15 03:04:49,851 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:04:49,869 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:04:49,890 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:04:49,912 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:04:49,913 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:04:49,913 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:04:49,913 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:04:49,913 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:04:49,913 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:04:49,914 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:04:49,914 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:04:49,939 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-15 03:04:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:49,946 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:49,947 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:49,948 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:49,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:49,954 INFO L82 PathProgramCache]: Analyzing trace with hash -122887910, now seen corresponding path program 1 times [2019-10-15 03:04:49,964 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:49,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349836015] [2019-10-15 03:04:49,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:49,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:49,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:50,075 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 03:04:50,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349836015] [2019-10-15 03:04:50,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:50,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:04:50,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16642222] [2019-10-15 03:04:50,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:04:50,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:50,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:04:50,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:04:50,095 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-15 03:04:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:50,118 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-10-15 03:04:50,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:04:50,119 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 03:04:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:50,130 INFO L225 Difference]: With dead ends: 35 [2019-10-15 03:04:50,134 INFO L226 Difference]: Without dead ends: 16 [2019-10-15 03:04:50,139 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 03:04:50,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-15 03:04:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-15 03:04:50,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-15 03:04:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-15 03:04:50,202 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-10-15 03:04:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:50,203 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-15 03:04:50,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:04:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-15 03:04:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:50,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:50,207 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:50,208 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:50,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:50,209 INFO L82 PathProgramCache]: Analyzing trace with hash -156194248, now seen corresponding path program 1 times [2019-10-15 03:04:50,210 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:50,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318050474] [2019-10-15 03:04:50,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:50,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:50,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:50,230 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:50,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044481123] [2019-10-15 03:04:50,231 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 03:04:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:50,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 03:04:50,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:50,398 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 03:04:50,399 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:50,557 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 03:04:50,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318050474] [2019-10-15 03:04:50,558 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:04:50,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044481123] [2019-10-15 03:04:50,560 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:50,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-15 03:04:50,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930318765] [2019-10-15 03:04:50,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:04:50,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:50,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:04:50,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:04:50,563 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2019-10-15 03:04:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:50,888 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-15 03:04:50,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:04:50,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-10-15 03:04:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:50,890 INFO L225 Difference]: With dead ends: 27 [2019-10-15 03:04:50,890 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 03:04:50,892 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:04:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 03:04:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-15 03:04:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:04:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-15 03:04:50,900 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2019-10-15 03:04:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:50,900 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-15 03:04:50,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:04:50,901 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-15 03:04:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-15 03:04:50,902 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:50,902 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 03:04:51,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:04:51,107 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:51,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1054216485, now seen corresponding path program 1 times [2019-10-15 03:04:51,108 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:51,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024915685] [2019-10-15 03:04:51,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:51,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:51,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:51,119 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:51,119 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885477691] [2019-10-15 03:04:51,119 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 03:04:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:51,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-15 03:04:51,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:53,205 WARN L860 $PredicateComparison]: unable to prove that (and (= c_main_~y~0 0) (= 0 (mod (+ (* (* (* (* c_main_~y~0 10) c_main_~y~0) c_main_~y~0) 29) c_main_~y~0 (* (* (* (* (* c_main_~y~0 15) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29) (* (* (* (* (* (* c_main_~y~0 6) c_main_~y~0) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29)) (- 30))) (= c_main_~c~0 0)) is different from true [2019-10-15 03:04:55,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2019-10-15 03:04:55,388 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:58,041 WARN L191 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-10-15 03:04:58,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:00,066 WARN L838 $PredicateComparison]: unable to prove that (or (not (= 0 (mod (+ (* (* (* (* c_main_~y~0 10) c_main_~y~0) c_main_~y~0) 29) c_main_~y~0 (* (* (* (* (* c_main_~y~0 15) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29) (* (* (* (* (* (* c_main_~y~0 6) c_main_~y~0) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29)) (- 30)))) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (let ((.cse0 (+ c_main_~y~0 1))) (= (* main_~k~0 .cse0) (* .cse0 .cse0))) (<= main_~k~0 c_main_~c~0)))) is different from false [2019-10-15 03:05:00,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:02,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:06,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:12,200 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((main_~k~0 Int) (v_main_~y~0_BEFORE_CALL_8 Int)) (or (= 0 (mod (+ (* (* (* (* v_main_~y~0_BEFORE_CALL_8 10) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) (* (* (* (* (* (* v_main_~y~0_BEFORE_CALL_8 6) 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) 29) (* (* (* (* (* v_main_~y~0_BEFORE_CALL_8 15) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) v_main_~y~0_BEFORE_CALL_8) (- 30))) (let ((.cse0 (+ v_main_~y~0_BEFORE_CALL_8 1))) (= (* .cse0 .cse0) (* main_~k~0 .cse0)))))) is different from true [2019-10-15 03:05:22,295 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((main_~k~0 Int) (v_main_~y~0_BEFORE_CALL_8 Int)) (or (= 0 (mod (+ (* (* (* (* v_main_~y~0_BEFORE_CALL_8 10) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) (* (* (* (* (* (* v_main_~y~0_BEFORE_CALL_8 6) 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) 29) (* (* (* (* (* v_main_~y~0_BEFORE_CALL_8 15) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) v_main_~y~0_BEFORE_CALL_8) (- 30))) (let ((.cse0 (+ v_main_~y~0_BEFORE_CALL_8 1))) (= (* .cse0 .cse0) (* main_~k~0 .cse0))))) (= 0 c___VERIFIER_assert_~cond)) is different from true [2019-10-15 03:05:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 1 refuted. 6 times theorem prover too weak. 6 trivial. 3 not checked. [2019-10-15 03:05:22,354 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024915685] [2019-10-15 03:05:22,354 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:05:22,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885477691] [2019-10-15 03:05:22,360 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1562181555] [2019-10-15 03:05:22,419 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-15 03:05:22,420 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:05:22,429 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:05:22,441 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:05:22,442 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:05:22,530 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:05:24,220 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-15 03:05:24,281 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:05:24,286 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:05:30,758 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-10-15 03:05:40,219 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 03:05:40,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2019-10-15 03:05:40,220 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070549709] [2019-10-15 03:05:40,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-15 03:05:40,222 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:40,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-15 03:05:40,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=349, Unknown=13, NotChecked=164, Total=600 [2019-10-15 03:05:40,224 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 25 states.