/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:56:39,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:56:39,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:56:39,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 06:56:39,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:56:39,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:56:39,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:56:39,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:56:39,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:56:39,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:56:39,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:56:39,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:56:39,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:56:39,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:56:39,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:56:39,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:56:39,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:56:39,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:56:39,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:56:39,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:56:39,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:56:39,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:56:39,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:56:39,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:56:39,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:56:39,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:56:39,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:56:39,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:56:39,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:56:39,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:56:39,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:56:39,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:56:39,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:56:39,906 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:56:39,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:56:39,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:56:39,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:56:39,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:56:39,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:56:39,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:56:39,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:56:39,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:56:39,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:56:39,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:56:39,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:56:39,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:56:39,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:39,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:56:39,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:56:39,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:56:39,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:56:39,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:56:39,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:56:39,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:56:39,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:56:40,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:56:40,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:56:40,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:56:40,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:56:40,328 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:56:40,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2020-12-22 06:56:40,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594263193/b5e5dff6513342df8ab91900295510f4/FLAG450b74381 [2020-12-22 06:56:41,132 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:56:41,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2020-12-22 06:56:41,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594263193/b5e5dff6513342df8ab91900295510f4/FLAG450b74381 [2020-12-22 06:56:41,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594263193/b5e5dff6513342df8ab91900295510f4 [2020-12-22 06:56:41,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:56:41,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:56:41,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:41,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:56:41,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:56:41,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:41" (1/1) ... [2020-12-22 06:56:41,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508726a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:41, skipping insertion in model container [2020-12-22 06:56:41,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:41" (1/1) ... [2020-12-22 06:56:41,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:56:41,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:56:41,796 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[4780,4793] [2020-12-22 06:56:41,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:42,016 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:56:42,087 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[4780,4793] [2020-12-22 06:56:42,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:42,237 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:56:42,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42 WrapperNode [2020-12-22 06:56:42,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:42,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:42,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:56:42,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:56:42,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (1/1) ... [2020-12-22 06:56:42,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (1/1) ... [2020-12-22 06:56:42,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:42,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:56:42,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:56:42,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:56:42,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (1/1) ... [2020-12-22 06:56:42,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (1/1) ... [2020-12-22 06:56:42,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (1/1) ... [2020-12-22 06:56:42,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (1/1) ... [2020-12-22 06:56:42,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (1/1) ... [2020-12-22 06:56:42,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (1/1) ... [2020-12-22 06:56:42,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (1/1) ... [2020-12-22 06:56:42,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:56:42,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:56:42,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:56:42,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:56:42,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (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 [2020-12-22 06:56:42,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:56:42,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:56:42,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:56:42,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:56:43,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:56:43,715 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2020-12-22 06:56:43,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:43 BoogieIcfgContainer [2020-12-22 06:56:43,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:56:43,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:56:43,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:56:43,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:56:43,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:41" (1/3) ... [2020-12-22 06:56:43,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d800a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:43, skipping insertion in model container [2020-12-22 06:56:43,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:42" (2/3) ... [2020-12-22 06:56:43,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d800a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:43, skipping insertion in model container [2020-12-22 06:56:43,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:43" (3/3) ... [2020-12-22 06:56:43,727 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-12-22 06:56:43,734 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:56:43,739 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:56:43,759 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:56:43,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:56:43,788 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:56:43,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:56:43,789 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:56:43,789 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:56:43,789 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:56:43,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:56:43,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:56:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-12-22 06:56:43,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:56:43,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:43,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:43,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:43,823 INFO L82 PathProgramCache]: Analyzing trace with hash 929673937, now seen corresponding path program 1 times [2020-12-22 06:56:43,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:43,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705736281] [2020-12-22 06:56:43,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:44,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705736281] [2020-12-22 06:56:44,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:44,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:44,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476250980] [2020-12-22 06:56:44,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:56:44,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:44,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:56:44,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:44,258 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2020-12-22 06:56:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:44,300 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2020-12-22 06:56:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:56:44,301 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:56:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:44,315 INFO L225 Difference]: With dead ends: 172 [2020-12-22 06:56:44,315 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 06:56:44,319 INFO L677 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 [2020-12-22 06:56:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 06:56:44,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-22 06:56:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-22 06:56:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2020-12-22 06:56:44,391 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2020-12-22 06:56:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:44,392 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2020-12-22 06:56:44,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:56:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2020-12-22 06:56:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:56:44,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:44,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:44,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:56:44,395 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:44,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash -117082960, now seen corresponding path program 1 times [2020-12-22 06:56:44,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:44,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215112680] [2020-12-22 06:56:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:44,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215112680] [2020-12-22 06:56:44,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:44,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:44,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504930528] [2020-12-22 06:56:44,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:44,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:44,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:44,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:44,548 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand 3 states. [2020-12-22 06:56:44,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:44,561 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2020-12-22 06:56:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:44,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:56:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:44,563 INFO L225 Difference]: With dead ends: 85 [2020-12-22 06:56:44,563 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 06:56:44,564 INFO L677 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 [2020-12-22 06:56:44,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 06:56:44,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 06:56:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 06:56:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-12-22 06:56:44,571 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2020-12-22 06:56:44,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:44,571 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-12-22 06:56:44,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:44,571 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-12-22 06:56:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:56:44,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:44,573 INFO L422 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] [2020-12-22 06:56:44,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:56:44,573 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:44,574 INFO L82 PathProgramCache]: Analyzing trace with hash 337421565, now seen corresponding path program 1 times [2020-12-22 06:56:44,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:44,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238403247] [2020-12-22 06:56:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:44,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238403247] [2020-12-22 06:56:44,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:44,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:44,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36609239] [2020-12-22 06:56:44,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:44,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:44,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:44,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:44,715 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2020-12-22 06:56:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:44,737 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2020-12-22 06:56:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:44,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 06:56:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:44,739 INFO L225 Difference]: With dead ends: 105 [2020-12-22 06:56:44,739 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 06:56:44,740 INFO L677 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 [2020-12-22 06:56:44,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 06:56:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-12-22 06:56:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 06:56:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2020-12-22 06:56:44,752 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 22 [2020-12-22 06:56:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:44,753 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2020-12-22 06:56:44,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:44,753 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2020-12-22 06:56:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 06:56:44,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:44,754 INFO L422 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] [2020-12-22 06:56:44,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:56:44,755 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:44,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1224569535, now seen corresponding path program 1 times [2020-12-22 06:56:44,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:44,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407926368] [2020-12-22 06:56:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:44,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407926368] [2020-12-22 06:56:44,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:44,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:44,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892135803] [2020-12-22 06:56:44,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:44,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:44,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:44,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:44,817 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand 3 states. [2020-12-22 06:56:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:44,882 INFO L93 Difference]: Finished difference Result 171 states and 254 transitions. [2020-12-22 06:56:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:44,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 06:56:44,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:44,886 INFO L225 Difference]: With dead ends: 171 [2020-12-22 06:56:44,886 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 06:56:44,887 INFO L677 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 [2020-12-22 06:56:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 06:56:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-12-22 06:56:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 06:56:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2020-12-22 06:56:44,904 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 23 [2020-12-22 06:56:44,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:44,904 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2020-12-22 06:56:44,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2020-12-22 06:56:44,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:56:44,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:44,906 INFO L422 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] [2020-12-22 06:56:44,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:56:44,906 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:44,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:44,907 INFO L82 PathProgramCache]: Analyzing trace with hash -840484654, now seen corresponding path program 1 times [2020-12-22 06:56:44,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:44,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287924540] [2020-12-22 06:56:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:45,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287924540] [2020-12-22 06:56:45,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:45,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:45,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010972062] [2020-12-22 06:56:45,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:45,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:45,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:45,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:45,016 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand 5 states. [2020-12-22 06:56:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:45,149 INFO L93 Difference]: Finished difference Result 399 states and 585 transitions. [2020-12-22 06:56:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:45,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-22 06:56:45,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:45,153 INFO L225 Difference]: With dead ends: 399 [2020-12-22 06:56:45,153 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 06:56:45,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 06:56:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 194. [2020-12-22 06:56:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-12-22 06:56:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 272 transitions. [2020-12-22 06:56:45,196 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 272 transitions. Word has length 25 [2020-12-22 06:56:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:45,197 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 272 transitions. [2020-12-22 06:56:45,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 272 transitions. [2020-12-22 06:56:45,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 06:56:45,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:45,199 INFO L422 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] [2020-12-22 06:56:45,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:56:45,199 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:45,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:45,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1495173652, now seen corresponding path program 1 times [2020-12-22 06:56:45,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:45,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605359257] [2020-12-22 06:56:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:45,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605359257] [2020-12-22 06:56:45,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:45,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:45,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529364420] [2020-12-22 06:56:45,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:45,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:45,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:45,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:45,322 INFO L87 Difference]: Start difference. First operand 194 states and 272 transitions. Second operand 5 states. [2020-12-22 06:56:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:45,529 INFO L93 Difference]: Finished difference Result 398 states and 570 transitions. [2020-12-22 06:56:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:56:45,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 06:56:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:45,533 INFO L225 Difference]: With dead ends: 398 [2020-12-22 06:56:45,533 INFO L226 Difference]: Without dead ends: 396 [2020-12-22 06:56:45,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:56:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-12-22 06:56:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 194. [2020-12-22 06:56:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-12-22 06:56:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2020-12-22 06:56:45,581 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 26 [2020-12-22 06:56:45,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:45,581 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2020-12-22 06:56:45,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2020-12-22 06:56:45,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 06:56:45,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:45,584 INFO L422 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] [2020-12-22 06:56:45,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:56:45,585 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:45,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:45,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1499969411, now seen corresponding path program 1 times [2020-12-22 06:56:45,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:45,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103500977] [2020-12-22 06:56:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:45,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103500977] [2020-12-22 06:56:45,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:45,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:45,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814661533] [2020-12-22 06:56:45,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:45,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:45,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:45,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:45,667 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand 4 states. [2020-12-22 06:56:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:45,779 INFO L93 Difference]: Finished difference Result 392 states and 557 transitions. [2020-12-22 06:56:45,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:45,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 06:56:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:45,783 INFO L225 Difference]: With dead ends: 392 [2020-12-22 06:56:45,783 INFO L226 Difference]: Without dead ends: 291 [2020-12-22 06:56:45,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:45,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-12-22 06:56:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2020-12-22 06:56:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-22 06:56:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 399 transitions. [2020-12-22 06:56:45,812 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 399 transitions. Word has length 33 [2020-12-22 06:56:45,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:45,812 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 399 transitions. [2020-12-22 06:56:45,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 399 transitions. [2020-12-22 06:56:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 06:56:45,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:45,815 INFO L422 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] [2020-12-22 06:56:45,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:56:45,816 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:45,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1515134207, now seen corresponding path program 1 times [2020-12-22 06:56:45,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:45,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693627926] [2020-12-22 06:56:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:45,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693627926] [2020-12-22 06:56:45,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:45,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:45,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326239291] [2020-12-22 06:56:45,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:45,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:45,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:45,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:45,873 INFO L87 Difference]: Start difference. First operand 287 states and 399 transitions. Second operand 4 states. [2020-12-22 06:56:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:45,945 INFO L93 Difference]: Finished difference Result 817 states and 1156 transitions. [2020-12-22 06:56:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:56:45,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 06:56:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:45,949 INFO L225 Difference]: With dead ends: 817 [2020-12-22 06:56:45,950 INFO L226 Difference]: Without dead ends: 621 [2020-12-22 06:56:45,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-12-22 06:56:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 287. [2020-12-22 06:56:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-22 06:56:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 397 transitions. [2020-12-22 06:56:45,981 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 397 transitions. Word has length 33 [2020-12-22 06:56:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:45,981 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 397 transitions. [2020-12-22 06:56:45,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 397 transitions. [2020-12-22 06:56:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 06:56:45,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:45,983 INFO L422 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] [2020-12-22 06:56:45,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:56:45,983 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:45,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:45,984 INFO L82 PathProgramCache]: Analyzing trace with hash 928328193, now seen corresponding path program 1 times [2020-12-22 06:56:45,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:45,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633392789] [2020-12-22 06:56:45,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:46,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633392789] [2020-12-22 06:56:46,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:46,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:46,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487228470] [2020-12-22 06:56:46,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:46,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:46,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:46,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:46,060 INFO L87 Difference]: Start difference. First operand 287 states and 397 transitions. Second operand 5 states. [2020-12-22 06:56:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:46,208 INFO L93 Difference]: Finished difference Result 609 states and 854 transitions. [2020-12-22 06:56:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:46,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-22 06:56:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:46,211 INFO L225 Difference]: With dead ends: 609 [2020-12-22 06:56:46,212 INFO L226 Difference]: Without dead ends: 413 [2020-12-22 06:56:46,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-12-22 06:56:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 318. [2020-12-22 06:56:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-12-22 06:56:46,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 443 transitions. [2020-12-22 06:56:46,255 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 443 transitions. Word has length 33 [2020-12-22 06:56:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:46,259 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 443 transitions. [2020-12-22 06:56:46,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:46,260 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 443 transitions. [2020-12-22 06:56:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:56:46,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:46,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 06:56:46,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:56:46,264 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:46,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:46,266 INFO L82 PathProgramCache]: Analyzing trace with hash -108849228, now seen corresponding path program 1 times [2020-12-22 06:56:46,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:46,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113074728] [2020-12-22 06:56:46,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:46,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113074728] [2020-12-22 06:56:46,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:46,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:46,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678642012] [2020-12-22 06:56:46,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:46,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:46,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:46,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:46,336 INFO L87 Difference]: Start difference. First operand 318 states and 443 transitions. Second operand 5 states. [2020-12-22 06:56:46,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:46,422 INFO L93 Difference]: Finished difference Result 902 states and 1251 transitions. [2020-12-22 06:56:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:46,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-12-22 06:56:46,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:46,426 INFO L225 Difference]: With dead ends: 902 [2020-12-22 06:56:46,427 INFO L226 Difference]: Without dead ends: 590 [2020-12-22 06:56:46,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:56:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-12-22 06:56:46,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 330. [2020-12-22 06:56:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-12-22 06:56:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 455 transitions. [2020-12-22 06:56:46,462 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 455 transitions. Word has length 47 [2020-12-22 06:56:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:46,463 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 455 transitions. [2020-12-22 06:56:46,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 455 transitions. [2020-12-22 06:56:46,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:56:46,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:46,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 06:56:46,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:56:46,465 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:46,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:46,465 INFO L82 PathProgramCache]: Analyzing trace with hash -618322318, now seen corresponding path program 1 times [2020-12-22 06:56:46,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:46,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842117407] [2020-12-22 06:56:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:46,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842117407] [2020-12-22 06:56:46,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:46,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:46,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827348318] [2020-12-22 06:56:46,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:46,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:46,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:46,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:46,531 INFO L87 Difference]: Start difference. First operand 330 states and 455 transitions. Second operand 5 states. [2020-12-22 06:56:46,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:46,640 INFO L93 Difference]: Finished difference Result 713 states and 973 transitions. [2020-12-22 06:56:46,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:56:46,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-12-22 06:56:46,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:46,644 INFO L225 Difference]: With dead ends: 713 [2020-12-22 06:56:46,644 INFO L226 Difference]: Without dead ends: 389 [2020-12-22 06:56:46,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-12-22 06:56:46,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 261. [2020-12-22 06:56:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-22 06:56:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2020-12-22 06:56:46,678 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 351 transitions. Word has length 47 [2020-12-22 06:56:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:46,678 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 351 transitions. [2020-12-22 06:56:46,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 351 transitions. [2020-12-22 06:56:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:56:46,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:46,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2020-12-22 06:56:46,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:56:46,680 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:46,681 INFO L82 PathProgramCache]: Analyzing trace with hash -423849614, now seen corresponding path program 1 times [2020-12-22 06:56:46,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:46,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524591800] [2020-12-22 06:56:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:46,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524591800] [2020-12-22 06:56:46,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400074709] [2020-12-22 06:56:46,788 INFO L95 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 [2020-12-22 06:56:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:46,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 06:56:46,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:47,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:56:47,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-12-22 06:56:47,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365758762] [2020-12-22 06:56:47,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:47,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:47,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:47,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:47,094 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand 6 states. [2020-12-22 06:56:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:47,333 INFO L93 Difference]: Finished difference Result 735 states and 1011 transitions. [2020-12-22 06:56:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:56:47,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-12-22 06:56:47,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:47,337 INFO L225 Difference]: With dead ends: 735 [2020-12-22 06:56:47,337 INFO L226 Difference]: Without dead ends: 534 [2020-12-22 06:56:47,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:56:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-12-22 06:56:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 321. [2020-12-22 06:56:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-12-22 06:56:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 433 transitions. [2020-12-22 06:56:47,379 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 433 transitions. Word has length 48 [2020-12-22 06:56:47,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:47,380 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 433 transitions. [2020-12-22 06:56:47,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 433 transitions. [2020-12-22 06:56:47,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:56:47,381 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:47,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-12-22 06:56:47,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 06:56:47,596 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:47,597 INFO L82 PathProgramCache]: Analyzing trace with hash -568509983, now seen corresponding path program 2 times [2020-12-22 06:56:47,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:47,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410103516] [2020-12-22 06:56:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:47,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:47,808 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:47,934 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:56:47,935 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:56:47,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:56:48,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:56:48 BoogieIcfgContainer [2020-12-22 06:56:48,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:56:48,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:56:48,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:56:48,098 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:56:48,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:43" (3/4) ... [2020-12-22 06:56:48,101 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:56:48,238 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec4_product43.cil.c-witness.graphml [2020-12-22 06:56:48,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:56:48,241 INFO L168 Benchmark]: Toolchain (without parser) took 6778.38 ms. Allocated memory was 152.0 MB in the beginning and 186.6 MB in the end (delta: 34.6 MB). Free memory was 127.0 MB in the beginning and 110.5 MB in the end (delta: 16.5 MB). Peak memory consumption was 51.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:48,241 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 152.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:56:48,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.65 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 105.9 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:48,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.71 ms. Allocated memory is still 152.0 MB. Free memory was 105.7 MB in the beginning and 102.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:48,243 INFO L168 Benchmark]: Boogie Preprocessor took 111.84 ms. Allocated memory is still 152.0 MB. Free memory was 102.7 MB in the beginning and 134.3 MB in the end (delta: -31.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:48,243 INFO L168 Benchmark]: RCFGBuilder took 1241.88 ms. Allocated memory is still 152.0 MB. Free memory was 134.3 MB in the beginning and 79.8 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:48,244 INFO L168 Benchmark]: TraceAbstraction took 4377.48 ms. Allocated memory was 152.0 MB in the beginning and 186.6 MB in the end (delta: 34.6 MB). Free memory was 79.3 MB in the beginning and 135.6 MB in the end (delta: -56.4 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:48,244 INFO L168 Benchmark]: Witness Printer took 140.98 ms. Allocated memory is still 186.6 MB. Free memory was 135.1 MB in the beginning and 110.5 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:48,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 152.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 771.65 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 105.9 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 122.71 ms. Allocated memory is still 152.0 MB. Free memory was 105.7 MB in the beginning and 102.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.84 ms. Allocated memory is still 152.0 MB. Free memory was 102.7 MB in the beginning and 134.3 MB in the end (delta: -31.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1241.88 ms. Allocated memory is still 152.0 MB. Free memory was 134.3 MB in the beginning and 79.8 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4377.48 ms. Allocated memory was 152.0 MB in the beginning and 186.6 MB in the end (delta: 34.6 MB). Free memory was 79.3 MB in the beginning and 135.6 MB in the end (delta: -56.4 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. * Witness Printer took 140.98 ms. Allocated memory is still 186.6 MB. Free memory was 135.1 MB in the beginning and 110.5 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 312]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L122] int pumpRunning = 0; [L123] int systemActive = 1; [L317] int cleanupTimeShifts = 4; [L417] int waterLevel = 1; [L418] int methaneLevelCritical = 0; [L715] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L393] int retValue_acc ; [L394] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L537] int retValue_acc ; [L540] retValue_acc = 1 [L541] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L400] tmp = valid_product() [L402] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L435] COND TRUE waterLevel < 2 [L436] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L162] COND TRUE ! pumpRunning [L274] int retValue_acc ; [L275] int tmp ; [L276] int tmp___0 ; [L497] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L500] COND FALSE !(waterLevel < 2) [L504] retValue_acc = 0 [L505] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L280] tmp = isHighWaterSensorDry() [L282] COND FALSE !(\read(tmp)) [L285] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L287] retValue_acc = tmp___0 [L288] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] tmp = isHighWaterLevel() [L166] COND TRUE \read(tmp) [L193] int tmp ; [L218] int retValue_acc ; [L456] int retValue_acc ; [L459] retValue_acc = methaneLevelCritical [L460] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L222] retValue_acc = isMethaneLevelCritical() [L224] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] tmp = isMethaneAlarm() [L199] COND FALSE !(\read(tmp)) [L187] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L918] tmp = getWaterLevel() [L920] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L130] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L423] COND TRUE waterLevel > 0 [L424] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L162] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L918] tmp = getWaterLevel() [L920] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L130] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L423] COND TRUE waterLevel > 0 [L424] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L162] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L918] tmp = getWaterLevel() [L920] COND TRUE tmp == 0 [L229] int retValue_acc ; [L232] retValue_acc = pumpRunning [L233] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L922] tmp___0 = isPumpRunning() [L924] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L312] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1093 SDtfs, 1254 SDslu, 1597 SDs, 0 SdLazy, 237 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1346 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 481 NumberOfCodeBlocks, 481 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 26739 SizeOfPredicates, 3 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...