/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 03:26:53,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 03:26:53,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 03:26:53,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 03:26:53,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 03:26:53,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 03:26:53,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 03:26:53,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 03:26:53,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 03:26:53,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 03:26:53,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 03:26:53,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 03:26:53,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 03:26:53,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 03:26:53,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 03:26:53,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 03:26:53,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 03:26:53,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 03:26:53,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 03:26:53,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 03:26:53,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 03:26:53,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 03:26:53,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 03:26:53,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 03:26:53,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 03:26:53,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 03:26:53,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 03:26:53,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 03:26:53,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 03:26:53,795 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 03:26:53,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 03:26:53,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 03:26:53,797 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 03:26:53,797 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 03:26:53,797 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 03:26:53,797 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 03:26:53,797 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 03:26:53,798 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 03:26:53,798 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 03:26:53,799 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 03:26:53,799 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 03:26:53,799 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 03:26:53,800 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 03:26:53,800 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 03:26:53,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 03:26:53,802 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 03:26:53,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 03:26:53,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 03:26:53,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 03:26:53,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 03:26:53,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 03:26:53,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 03:26:53,803 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 03:26:53,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 03:26:53,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 03:26:53,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 03:26:53,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 03:26:53,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 03:26:53,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:26:53,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 03:26:53,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 03:26:53,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 03:26:53,806 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 03:26:53,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 03:26:53,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 03:26:53,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 03:26:53,807 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 03:26:54,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 03:26:54,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 03:26:54,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 03:26:54,134 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 03:26:54,134 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 03:26:54,135 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2019-11-24 03:26:54,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc9121da/0db93f28f9af44709d06ec246055b31a/FLAG427a4423b [2019-11-24 03:26:54,993 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 03:26:54,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2019-11-24 03:26:55,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc9121da/0db93f28f9af44709d06ec246055b31a/FLAG427a4423b [2019-11-24 03:26:55,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc9121da/0db93f28f9af44709d06ec246055b31a [2019-11-24 03:26:55,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 03:26:55,055 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 03:26:55,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 03:26:55,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 03:26:55,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 03:26:55,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:26:55" (1/1) ... [2019-11-24 03:26:55,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b268c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:55, skipping insertion in model container [2019-11-24 03:26:55,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:26:55" (1/1) ... [2019-11-24 03:26:55,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 03:26:55,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 03:26:56,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:26:56,641 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 03:26:57,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:26:57,237 INFO L208 MainTranslator]: Completed translation [2019-11-24 03:26:57,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57 WrapperNode [2019-11-24 03:26:57,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 03:26:57,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 03:26:57,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 03:26:57,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 03:26:57,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... [2019-11-24 03:26:57,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... [2019-11-24 03:26:57,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 03:26:57,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 03:26:57,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 03:26:57,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 03:26:57,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... [2019-11-24 03:26:57,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... [2019-11-24 03:26:57,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... [2019-11-24 03:26:57,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... [2019-11-24 03:26:57,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... [2019-11-24 03:26:57,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... [2019-11-24 03:26:57,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... [2019-11-24 03:26:57,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 03:26:57,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 03:26:57,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 03:26:57,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 03:26:57,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:26:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 03:26:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 03:26:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 03:26:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 03:26:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 03:26:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 03:26:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 03:26:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 03:26:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 03:26:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 03:26:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 03:26:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 03:26:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 03:26:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 03:26:58,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 03:27:49,444 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 03:27:49,444 INFO L284 CfgBuilder]: Removed 1478 assume(true) statements. [2019-11-24 03:27:49,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:27:49 BoogieIcfgContainer [2019-11-24 03:27:49,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 03:27:49,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 03:27:49,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 03:27:49,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 03:27:49,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 03:26:55" (1/3) ... [2019-11-24 03:27:49,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acc792f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:27:49, skipping insertion in model container [2019-11-24 03:27:49,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:26:57" (2/3) ... [2019-11-24 03:27:49,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acc792f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:27:49, skipping insertion in model container [2019-11-24 03:27:49,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:27:49" (3/3) ... [2019-11-24 03:27:49,453 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2019-11-24 03:27:49,461 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 03:27:49,469 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 03:27:49,478 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 03:27:49,504 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 03:27:49,504 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 03:27:49,504 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 03:27:49,505 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 03:27:49,505 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 03:27:49,505 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 03:27:49,505 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 03:27:49,505 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 03:27:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states. [2019-11-24 03:27:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-24 03:27:49,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:27:49,535 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:27:49,535 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:27:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:27:49,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1734341247, now seen corresponding path program 1 times [2019-11-24 03:27:49,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:27:49,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932135434] [2019-11-24 03:27:49,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:27:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:27:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:27:50,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932135434] [2019-11-24 03:27:50,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:27:50,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:27:50,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300027143] [2019-11-24 03:27:50,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:27:50,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:27:50,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:27:50,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:50,232 INFO L87 Difference]: Start difference. First operand 214 states. Second operand 3 states. [2019-11-24 03:27:51,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:27:51,703 INFO L93 Difference]: Finished difference Result 603 states and 1045 transitions. [2019-11-24 03:27:51,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:27:51,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-24 03:27:51,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:27:51,732 INFO L225 Difference]: With dead ends: 603 [2019-11-24 03:27:51,732 INFO L226 Difference]: Without dead ends: 394 [2019-11-24 03:27:51,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:51,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2019-11-24 03:27:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2019-11-24 03:27:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2019-11-24 03:27:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 677 transitions. [2019-11-24 03:27:51,828 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 677 transitions. Word has length 23 [2019-11-24 03:27:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:27:51,829 INFO L462 AbstractCegarLoop]: Abstraction has 392 states and 677 transitions. [2019-11-24 03:27:51,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:27:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 677 transitions. [2019-11-24 03:27:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-24 03:27:51,830 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:27:51,831 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:27:51,831 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:27:51,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:27:51,831 INFO L82 PathProgramCache]: Analyzing trace with hash -442851488, now seen corresponding path program 1 times [2019-11-24 03:27:51,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:27:51,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608883201] [2019-11-24 03:27:51,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:27:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:27:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:27:51,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608883201] [2019-11-24 03:27:51,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:27:51,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:27:51,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620489211] [2019-11-24 03:27:51,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:27:51,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:27:51,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:27:51,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:51,999 INFO L87 Difference]: Start difference. First operand 392 states and 677 transitions. Second operand 3 states. [2019-11-24 03:27:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:27:52,157 INFO L93 Difference]: Finished difference Result 768 states and 1323 transitions. [2019-11-24 03:27:52,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:27:52,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-24 03:27:52,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:27:52,167 INFO L225 Difference]: With dead ends: 768 [2019-11-24 03:27:52,168 INFO L226 Difference]: Without dead ends: 391 [2019-11-24 03:27:52,175 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:52,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-11-24 03:27:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2019-11-24 03:27:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2019-11-24 03:27:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 673 transitions. [2019-11-24 03:27:52,230 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 673 transitions. Word has length 26 [2019-11-24 03:27:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:27:52,230 INFO L462 AbstractCegarLoop]: Abstraction has 391 states and 673 transitions. [2019-11-24 03:27:52,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:27:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 673 transitions. [2019-11-24 03:27:52,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-24 03:27:52,236 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:27:52,236 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:27:52,236 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:27:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:27:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1911068830, now seen corresponding path program 1 times [2019-11-24 03:27:52,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:27:52,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803918810] [2019-11-24 03:27:52,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:27:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:27:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-24 03:27:52,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803918810] [2019-11-24 03:27:52,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:27:52,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:27:52,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468438835] [2019-11-24 03:27:52,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:27:52,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:27:52,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:27:52,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:52,439 INFO L87 Difference]: Start difference. First operand 391 states and 673 transitions. Second operand 3 states. [2019-11-24 03:27:52,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:27:52,476 INFO L93 Difference]: Finished difference Result 579 states and 1004 transitions. [2019-11-24 03:27:52,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:27:52,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-11-24 03:27:52,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:27:52,480 INFO L225 Difference]: With dead ends: 579 [2019-11-24 03:27:52,480 INFO L226 Difference]: Without dead ends: 576 [2019-11-24 03:27:52,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-11-24 03:27:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2019-11-24 03:27:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-11-24 03:27:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1001 transitions. [2019-11-24 03:27:52,505 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1001 transitions. Word has length 35 [2019-11-24 03:27:52,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:27:52,505 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 1001 transitions. [2019-11-24 03:27:52,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:27:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1001 transitions. [2019-11-24 03:27:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-24 03:27:52,508 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:27:52,508 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:27:52,509 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:27:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:27:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash -119717000, now seen corresponding path program 1 times [2019-11-24 03:27:52,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:27:52,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442636866] [2019-11-24 03:27:52,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:27:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:27:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:27:52,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442636866] [2019-11-24 03:27:52,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:27:52,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:27:52,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978448755] [2019-11-24 03:27:52,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:27:52,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:27:52,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:27:52,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:52,669 INFO L87 Difference]: Start difference. First operand 576 states and 1001 transitions. Second operand 3 states. [2019-11-24 03:27:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:27:55,271 INFO L93 Difference]: Finished difference Result 937 states and 1617 transitions. [2019-11-24 03:27:55,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:27:55,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-11-24 03:27:55,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:27:55,278 INFO L225 Difference]: With dead ends: 937 [2019-11-24 03:27:55,278 INFO L226 Difference]: Without dead ends: 376 [2019-11-24 03:27:55,280 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:55,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-11-24 03:27:55,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 369. [2019-11-24 03:27:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2019-11-24 03:27:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 634 transitions. [2019-11-24 03:27:55,294 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 634 transitions. Word has length 38 [2019-11-24 03:27:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:27:55,295 INFO L462 AbstractCegarLoop]: Abstraction has 369 states and 634 transitions. [2019-11-24 03:27:55,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:27:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 634 transitions. [2019-11-24 03:27:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-24 03:27:55,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:27:55,297 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:27:55,298 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:27:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:27:55,298 INFO L82 PathProgramCache]: Analyzing trace with hash -903410635, now seen corresponding path program 1 times [2019-11-24 03:27:55,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:27:55,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164928769] [2019-11-24 03:27:55,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:27:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:27:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 03:27:55,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164928769] [2019-11-24 03:27:55,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:27:55,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:27:55,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605161305] [2019-11-24 03:27:55,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:27:55,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:27:55,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:27:55,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:55,514 INFO L87 Difference]: Start difference. First operand 369 states and 634 transitions. Second operand 3 states. [2019-11-24 03:27:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:27:55,533 INFO L93 Difference]: Finished difference Result 585 states and 1002 transitions. [2019-11-24 03:27:55,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:27:55,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-24 03:27:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:27:55,536 INFO L225 Difference]: With dead ends: 585 [2019-11-24 03:27:55,536 INFO L226 Difference]: Without dead ends: 370 [2019-11-24 03:27:55,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:27:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2019-11-24 03:27:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2019-11-24 03:27:55,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2019-11-24 03:27:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 635 transitions. [2019-11-24 03:27:55,551 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 635 transitions. Word has length 50 [2019-11-24 03:27:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:27:55,551 INFO L462 AbstractCegarLoop]: Abstraction has 370 states and 635 transitions. [2019-11-24 03:27:55,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:27:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 635 transitions. [2019-11-24 03:27:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-24 03:27:55,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:27:55,553 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:27:55,554 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:27:55,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:27:55,554 INFO L82 PathProgramCache]: Analyzing trace with hash 650416592, now seen corresponding path program 1 times [2019-11-24 03:27:55,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:27:55,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546364748] [2019-11-24 03:27:55,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:27:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:27:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-24 03:27:56,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546364748] [2019-11-24 03:27:56,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:27:56,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:27:56,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598712932] [2019-11-24 03:27:56,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:27:56,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:27:56,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:27:56,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:27:56,207 INFO L87 Difference]: Start difference. First operand 370 states and 635 transitions. Second operand 4 states. [2019-11-24 03:27:56,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:27:56,395 INFO L93 Difference]: Finished difference Result 614 states and 1058 transitions. [2019-11-24 03:27:56,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 03:27:56,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-24 03:27:56,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:27:56,399 INFO L225 Difference]: With dead ends: 614 [2019-11-24 03:27:56,399 INFO L226 Difference]: Without dead ends: 611 [2019-11-24 03:27:56,401 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:27:56,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-11-24 03:27:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 372. [2019-11-24 03:27:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-11-24 03:27:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 638 transitions. [2019-11-24 03:27:56,735 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 638 transitions. Word has length 51 [2019-11-24 03:27:56,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:27:56,735 INFO L462 AbstractCegarLoop]: Abstraction has 372 states and 638 transitions. [2019-11-24 03:27:56,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:27:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 638 transitions. [2019-11-24 03:27:56,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-24 03:27:56,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:27:56,737 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:27:56,737 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:27:56,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:27:56,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1745534202, now seen corresponding path program 1 times [2019-11-24 03:27:56,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:27:56,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905707329] [2019-11-24 03:27:56,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:27:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:27:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 03:27:57,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905707329] [2019-11-24 03:27:57,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795058662] [2019-11-24 03:27:57,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:27:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:27:59,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 1678 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 03:27:59,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:27:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:27:59,472 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:27:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:27:59,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 03:27:59,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-11-24 03:27:59,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840979189] [2019-11-24 03:27:59,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:27:59,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:27:59,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:27:59,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 03:27:59,501 INFO L87 Difference]: Start difference. First operand 372 states and 638 transitions. Second operand 4 states. [2019-11-24 03:27:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:27:59,739 INFO L93 Difference]: Finished difference Result 760 states and 1309 transitions. [2019-11-24 03:27:59,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 03:27:59,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-24 03:27:59,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:27:59,743 INFO L225 Difference]: With dead ends: 760 [2019-11-24 03:27:59,743 INFO L226 Difference]: Without dead ends: 393 [2019-11-24 03:27:59,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 03:27:59,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2019-11-24 03:27:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2019-11-24 03:27:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2019-11-24 03:27:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 659 transitions. [2019-11-24 03:27:59,772 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 659 transitions. Word has length 51 [2019-11-24 03:27:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:27:59,773 INFO L462 AbstractCegarLoop]: Abstraction has 393 states and 659 transitions. [2019-11-24 03:27:59,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:27:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 659 transitions. [2019-11-24 03:27:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-24 03:27:59,774 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:27:59,774 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:27:59,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:27:59,979 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:27:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:27:59,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1353366120, now seen corresponding path program 1 times [2019-11-24 03:27:59,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:27:59,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060218561] [2019-11-24 03:27:59,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:28:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:28:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-24 03:28:01,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060218561] [2019-11-24 03:28:01,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:28:01,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:28:01,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528325301] [2019-11-24 03:28:01,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:28:01,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:28:01,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:28:01,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:28:01,239 INFO L87 Difference]: Start difference. First operand 393 states and 659 transitions. Second operand 3 states. [2019-11-24 03:28:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:28:01,326 INFO L93 Difference]: Finished difference Result 793 states and 1333 transitions. [2019-11-24 03:28:01,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:28:01,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2019-11-24 03:28:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:28:01,329 INFO L225 Difference]: With dead ends: 793 [2019-11-24 03:28:01,330 INFO L226 Difference]: Without dead ends: 402 [2019-11-24 03:28:01,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:28:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2019-11-24 03:28:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2019-11-24 03:28:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2019-11-24 03:28:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 668 transitions. [2019-11-24 03:28:01,357 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 668 transitions. Word has length 63 [2019-11-24 03:28:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:28:01,357 INFO L462 AbstractCegarLoop]: Abstraction has 402 states and 668 transitions. [2019-11-24 03:28:01,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:28:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 668 transitions. [2019-11-24 03:28:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-24 03:28:01,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:28:01,360 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:28:01,360 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:28:01,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:28:01,360 INFO L82 PathProgramCache]: Analyzing trace with hash -952826235, now seen corresponding path program 1 times [2019-11-24 03:28:01,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:28:01,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339406953] [2019-11-24 03:28:01,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:28:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:28:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-24 03:28:02,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339406953] [2019-11-24 03:28:02,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479596094] [2019-11-24 03:28:02,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:28:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:28:06,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-24 03:28:06,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:28:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-24 03:28:06,722 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:28:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-24 03:28:06,756 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1811867852] [2019-11-24 03:28:06,805 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2019-11-24 03:28:06,805 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 03:28:06,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 03:28:06,820 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 03:28:06,820 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 03:28:10,125 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 03:28:11,045 WARN L192 SmtUtils]: Spent 916.00 ms on a formula simplification that was a NOOP. DAG size: 1188