/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/email_spec9_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:16:05,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:16:05,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:16:05,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:16:05,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:16:05,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:16:05,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:16:05,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:16:05,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:16:05,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:16:05,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:16:05,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:16:05,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:16:05,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:16:05,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:16:05,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:16:05,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:16:05,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:16:05,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:16:05,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:16:05,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:16:05,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:16:05,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:16:05,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:16:05,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:16:05,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:16:05,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:16:05,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:16:05,407 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 05:16:05,421 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:16:05,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:16:05,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:16:05,422 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:16:05,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:16:05,423 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:16:05,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:16:05,423 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:16:05,423 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:16:05,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:16:05,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:16:05,424 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:16:05,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:16:05,424 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:16:05,425 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:16:05,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:16:05,425 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:16:05,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:16:05,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:16:05,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:16:05,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:16:05,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:16:05,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:16:05,427 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:16:05,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:16:05,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:16:05,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:16:05,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:16:05,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:16:05,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:16:05,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:16:05,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:16:05,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:16:05,429 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:16:05,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:16:05,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:16:05,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:16:05,429 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:16:05,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:16:05,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:16:05,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:16:05,712 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:16:05,712 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:16:05,713 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product33.cil.c [2019-11-24 05:16:05,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf51050f9/e59e22797d804b459bca44c26be59100/FLAGaa924dde3 [2019-11-24 05:16:06,468 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:16:06,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product33.cil.c [2019-11-24 05:16:06,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf51050f9/e59e22797d804b459bca44c26be59100/FLAGaa924dde3 [2019-11-24 05:16:06,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf51050f9/e59e22797d804b459bca44c26be59100 [2019-11-24 05:16:06,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:16:06,713 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:16:06,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:16:06,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:16:06,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:16:06,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:16:06" (1/1) ... [2019-11-24 05:16:06,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146054c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:06, skipping insertion in model container [2019-11-24 05:16:06,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:16:06" (1/1) ... [2019-11-24 05:16:06,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:16:06,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:16:07,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:16:07,457 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:16:07,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:16:07,760 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:16:07,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07 WrapperNode [2019-11-24 05:16:07,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:16:07,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:16:07,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:16:07,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:16:07,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (1/1) ... [2019-11-24 05:16:07,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (1/1) ... [2019-11-24 05:16:07,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:16:07,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:16:07,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:16:07,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:16:07,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (1/1) ... [2019-11-24 05:16:07,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (1/1) ... [2019-11-24 05:16:07,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (1/1) ... [2019-11-24 05:16:08,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (1/1) ... [2019-11-24 05:16:08,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (1/1) ... [2019-11-24 05:16:08,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (1/1) ... [2019-11-24 05:16:08,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (1/1) ... [2019-11-24 05:16:08,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:16:08,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:16:08,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:16:08,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:16:08,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (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 05:16:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:16:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:16:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:16:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:16:08,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:16:18,629 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:16:18,630 INFO L284 CfgBuilder]: Removed 407 assume(true) statements. [2019-11-24 05:16:18,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:16:18 BoogieIcfgContainer [2019-11-24 05:16:18,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:16:18,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:16:18,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:16:18,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:16:18,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:16:06" (1/3) ... [2019-11-24 05:16:18,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c885b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:16:18, skipping insertion in model container [2019-11-24 05:16:18,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:07" (2/3) ... [2019-11-24 05:16:18,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c885b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:16:18, skipping insertion in model container [2019-11-24 05:16:18,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:16:18" (3/3) ... [2019-11-24 05:16:18,641 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product33.cil.c [2019-11-24 05:16:18,650 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:16:18,658 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 05:16:18,669 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 05:16:18,691 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:16:18,691 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:16:18,691 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:16:18,691 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:16:18,691 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:16:18,691 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:16:18,691 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:16:18,691 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:16:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-24 05:16:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:16:18,710 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:18,711 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:18,712 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:16:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:18,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1783123300, now seen corresponding path program 1 times [2019-11-24 05:16:18,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:18,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876940561] [2019-11-24 05:16:18,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:19,118 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 05:16:19,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876940561] [2019-11-24 05:16:19,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:19,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:16:19,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604479018] [2019-11-24 05:16:19,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:16:19,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:19,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:16:19,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:16:19,144 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-11-24 05:16:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:19,170 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-11-24 05:16:19,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:16:19,171 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:16:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:19,188 INFO L225 Difference]: With dead ends: 54 [2019-11-24 05:16:19,188 INFO L226 Difference]: Without dead ends: 37 [2019-11-24 05:16:19,191 INFO L630 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 [2019-11-24 05:16:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-24 05:16:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-24 05:16:19,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 05:16:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 60 transitions. [2019-11-24 05:16:19,231 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 60 transitions. Word has length 7 [2019-11-24 05:16:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:19,231 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 60 transitions. [2019-11-24 05:16:19,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:16:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2019-11-24 05:16:19,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:16:19,232 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:19,233 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:19,233 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:16:19,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:19,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1285528229, now seen corresponding path program 1 times [2019-11-24 05:16:19,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:19,234 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727078443] [2019-11-24 05:16:19,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:19,345 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 05:16:19,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727078443] [2019-11-24 05:16:19,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:19,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:16:19,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921665626] [2019-11-24 05:16:19,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:16:19,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:19,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:16:19,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:16:19,349 INFO L87 Difference]: Start difference. First operand 37 states and 60 transitions. Second operand 3 states. [2019-11-24 05:16:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:19,365 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2019-11-24 05:16:19,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:16:19,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:16:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:19,367 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:16:19,367 INFO L226 Difference]: Without dead ends: 39 [2019-11-24 05:16:19,368 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 05:16:19,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-24 05:16:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-24 05:16:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-24 05:16:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 62 transitions. [2019-11-24 05:16:19,376 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 62 transitions. Word has length 8 [2019-11-24 05:16:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:19,377 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 62 transitions. [2019-11-24 05:16:19,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:16:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 62 transitions. [2019-11-24 05:16:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 05:16:19,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:19,378 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:19,379 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:16:19,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:19,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1206161895, now seen corresponding path program 1 times [2019-11-24 05:16:19,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:19,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357717229] [2019-11-24 05:16:19,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:19,534 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 05:16:19,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357717229] [2019-11-24 05:16:19,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:19,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:16:19,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11845524] [2019-11-24 05:16:19,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:16:19,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:19,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:16:19,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:16:19,538 INFO L87 Difference]: Start difference. First operand 39 states and 62 transitions. Second operand 3 states. [2019-11-24 05:16:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:19,583 INFO L93 Difference]: Finished difference Result 45 states and 67 transitions. [2019-11-24 05:16:19,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:16:19,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-24 05:16:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:19,585 INFO L225 Difference]: With dead ends: 45 [2019-11-24 05:16:19,585 INFO L226 Difference]: Without dead ends: 36 [2019-11-24 05:16:19,586 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 05:16:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-24 05:16:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-24 05:16:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-24 05:16:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 58 transitions. [2019-11-24 05:16:19,593 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 58 transitions. Word has length 12 [2019-11-24 05:16:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:19,593 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 58 transitions. [2019-11-24 05:16:19,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:16:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 58 transitions. [2019-11-24 05:16:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:16:19,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:19,595 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:19,595 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:16:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:19,596 INFO L82 PathProgramCache]: Analyzing trace with hash 342372046, now seen corresponding path program 1 times [2019-11-24 05:16:19,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:19,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504303833] [2019-11-24 05:16:19,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:16:20,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504303833] [2019-11-24 05:16:20,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:20,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-24 05:16:20,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553774853] [2019-11-24 05:16:20,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-24 05:16:20,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:20,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-24 05:16:20,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:16:20,414 INFO L87 Difference]: Start difference. First operand 36 states and 58 transitions. Second operand 9 states. [2019-11-24 05:16:21,930 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-11-24 05:16:22,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:22,125 INFO L93 Difference]: Finished difference Result 95 states and 162 transitions. [2019-11-24 05:16:22,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-24 05:16:22,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2019-11-24 05:16:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:22,128 INFO L225 Difference]: With dead ends: 95 [2019-11-24 05:16:22,128 INFO L226 Difference]: Without dead ends: 87 [2019-11-24 05:16:22,129 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-24 05:16:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-24 05:16:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2019-11-24 05:16:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-24 05:16:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 145 transitions. [2019-11-24 05:16:22,220 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 145 transitions. Word has length 15 [2019-11-24 05:16:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:22,220 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 145 transitions. [2019-11-24 05:16:22,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-24 05:16:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 145 transitions. [2019-11-24 05:16:22,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:16:22,222 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:22,222 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:22,223 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:16:22,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:22,223 INFO L82 PathProgramCache]: Analyzing trace with hash 729866715, now seen corresponding path program 1 times [2019-11-24 05:16:22,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:22,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484086009] [2019-11-24 05:16:22,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:16:22,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484086009] [2019-11-24 05:16:22,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:22,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:16:22,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449430274] [2019-11-24 05:16:22,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:16:22,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:22,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:16:22,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:16:22,311 INFO L87 Difference]: Start difference. First operand 82 states and 145 transitions. Second operand 3 states. [2019-11-24 05:16:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:22,353 INFO L93 Difference]: Finished difference Result 214 states and 380 transitions. [2019-11-24 05:16:22,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:16:22,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-24 05:16:22,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:22,360 INFO L225 Difference]: With dead ends: 214 [2019-11-24 05:16:22,360 INFO L226 Difference]: Without dead ends: 136 [2019-11-24 05:16:22,361 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 05:16:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-24 05:16:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2019-11-24 05:16:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-11-24 05:16:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 229 transitions. [2019-11-24 05:16:22,403 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 229 transitions. Word has length 16 [2019-11-24 05:16:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:22,404 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 229 transitions. [2019-11-24 05:16:22,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:16:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 229 transitions. [2019-11-24 05:16:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:16:22,409 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:22,409 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:22,409 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:16:22,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:22,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1019818596, now seen corresponding path program 1 times [2019-11-24 05:16:22,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:22,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103271054] [2019-11-24 05:16:22,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:16:22,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103271054] [2019-11-24 05:16:22,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869348627] [2019-11-24 05:16:22,748 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 05:16:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:23,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:16:23,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:16:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:16:23,256 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:16:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:16:23,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1236380988] [2019-11-24 05:16:23,307 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-24 05:16:23,307 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:16:23,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:16:23,320 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:16:23,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs