/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/product-lines/minepump_spec3_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:25:47,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:25:47,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:25:47,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:25:47,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:25:47,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:25:47,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:25:47,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:25:47,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:25:47,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:25:47,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:25:47,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:25:47,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:25:47,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:25:47,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:25:47,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:25:47,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:25:47,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:25:47,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:25:47,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:25:47,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:25:47,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:25:47,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:25:47,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:25:47,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:25:47,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:25:47,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:25:47,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:25:47,611 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 05:25:47,628 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:25:47,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:25:47,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:25:47,630 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:25:47,630 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:25:47,630 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:25:47,630 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:25:47,630 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:25:47,631 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:25:47,631 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:25:47,631 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:25:47,631 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:25:47,631 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:25:47,632 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:25:47,632 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:25:47,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:25:47,633 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:25:47,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:25:47,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:25:47,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:25:47,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:25:47,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:25:47,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:25:47,634 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:25:47,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:25:47,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:25:47,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:25:47,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:25:47,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:25:47,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:25:47,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:25:47,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:25:47,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:25:47,636 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:25:47,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:25:47,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:25:47,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:25:47,637 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:25:47,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:25:47,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:25:47,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:25:47,921 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:25:47,922 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:25:47,922 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product37.cil.c [2019-11-24 05:25:47,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e0ec8f2/cc72155dd1134a848bcea6e71c04d6f2/FLAG44a4e5469 [2019-11-24 05:25:48,543 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:25:48,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product37.cil.c [2019-11-24 05:25:48,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e0ec8f2/cc72155dd1134a848bcea6e71c04d6f2/FLAG44a4e5469 [2019-11-24 05:25:48,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e0ec8f2/cc72155dd1134a848bcea6e71c04d6f2 [2019-11-24 05:25:48,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:25:48,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:25:48,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:48,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:25:48,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:25:48,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:48" (1/1) ... [2019-11-24 05:25:48,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6768693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:48, skipping insertion in model container [2019-11-24 05:25:48,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:48" (1/1) ... [2019-11-24 05:25:48,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:25:48,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:25:49,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:49,374 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:25:49,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:49,517 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:25:49,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49 WrapperNode [2019-11-24 05:25:49,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:49,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:49,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:25:49,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:25:49,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:49,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:25:49,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:25:49,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:25:49,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:25:49,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:25:49,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:25:49,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:25:49,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (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 [2019-11-24 05:25:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:25:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:25:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:25:49,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:25:51,771 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:25:51,771 INFO L284 CfgBuilder]: Removed 162 assume(true) statements. [2019-11-24 05:25:51,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:25:51 BoogieIcfgContainer [2019-11-24 05:25:51,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:25:51,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:25:51,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:25:51,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:25:51,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:25:48" (1/3) ... [2019-11-24 05:25:51,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce167bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:25:51, skipping insertion in model container [2019-11-24 05:25:51,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (2/3) ... [2019-11-24 05:25:51,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce167bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:25:51, skipping insertion in model container [2019-11-24 05:25:51,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:25:51" (3/3) ... [2019-11-24 05:25:51,786 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product37.cil.c [2019-11-24 05:25:51,796 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:25:51,805 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:25:51,816 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:25:51,843 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:25:51,843 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:25:51,844 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:25:51,844 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:25:51,844 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:25:51,844 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:25:51,844 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:25:51,845 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:25:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:25:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:25:51,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:51,871 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:25:51,871 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:51,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1219281275, now seen corresponding path program 1 times [2019-11-24 05:25:51,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:51,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154737858] [2019-11-24 05:25:51,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:52,314 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 05:25:52,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154737858] [2019-11-24 05:25:52,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:25:52,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:25:52,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715613996] [2019-11-24 05:25:52,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:25:52,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:25:52,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:25:52,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:25:52,340 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2019-11-24 05:25:52,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:25:52,712 INFO L93 Difference]: Finished difference Result 90 states and 135 transitions. [2019-11-24 05:25:52,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:25:52,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:25:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:25:52,726 INFO L225 Difference]: With dead ends: 90 [2019-11-24 05:25:52,726 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:25:52,730 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-24 05:25:52,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:25:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2019-11-24 05:25:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-24 05:25:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-11-24 05:25:52,767 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 8 [2019-11-24 05:25:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:25:52,768 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-24 05:25:52,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:25:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2019-11-24 05:25:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:25:52,769 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:52,769 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:25:52,769 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:52,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:52,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1032245973, now seen corresponding path program 1 times [2019-11-24 05:25:52,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:52,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874131391] [2019-11-24 05:25:52,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:25:53,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874131391] [2019-11-24 05:25:53,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852097876] [2019-11-24 05:25:53,065 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 05:25:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:53,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:25:53,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:25:53,318 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:53,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:53,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:53,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:25:53,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:53,402 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 05:25:53,402 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:25:53,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:53,452 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 05:25:53,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1542988033] [2019-11-24 05:25:53,490 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:25:53,490 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:25:53,496 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:25:53,503 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:25:53,503 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:26:02,554 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:26:04,023 WARN L192 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:26:04,171 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:26:04,792 WARN L192 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 577 [2019-11-24 05:26:05,892 WARN L192 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 677 [2019-11-24 05:26:13,003 WARN L192 SmtUtils]: Spent 5.64 s on a formula simplification. DAG size of input: 950 DAG size of output: 857 [2019-11-24 05:26:20,634 WARN L192 SmtUtils]: Spent 5.79 s on a formula simplification. DAG size of input: 837 DAG size of output: 833 [2019-11-24 05:26:38,629 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:26:42,973 WARN L192 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 484 DAG size of output: 429