/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:56:33,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:56:33,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:56:33,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:56:33,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:56:33,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:56:33,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:56:33,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:56:33,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:56:33,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:56:33,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:56:33,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:56:33,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:56:33,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:56:33,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:56:33,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:56:33,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:56:33,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:56:33,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:56:33,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:56:33,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:56:33,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:56:33,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:56:33,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:56:33,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:56:33,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:56:33,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:56:33,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:56:33,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:56:33,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:56:33,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:56:33,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:56:33,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:56:33,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:56:33,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:56:33,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:56:33,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:56:33,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:56:33,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:56:33,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:56:33,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:56:33,370 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:56:33,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:56:33,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:56:33,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:56:33,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:56:33,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:56:33,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:56:33,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:56:33,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:56:33,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:56:33,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:56:33,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:56:33,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:56:33,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:33,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:56:33,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:56:33,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:56:33,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:56:33,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:56:33,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:56:33,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:56:33,375 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:56:33,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:56:33,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:56:33,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:56:33,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:56:33,770 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:56:33,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2020-12-22 06:56:33,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6910722f8/0f1466cccfb64f06b78213b7b079b5c2/FLAG487e54e86 [2020-12-22 06:56:34,618 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:56:34,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2020-12-22 06:56:34,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6910722f8/0f1466cccfb64f06b78213b7b079b5c2/FLAG487e54e86 [2020-12-22 06:56:34,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6910722f8/0f1466cccfb64f06b78213b7b079b5c2 [2020-12-22 06:56:34,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:56:34,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:56:34,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:34,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:56:34,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:56:34,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:34" (1/1) ... [2020-12-22 06:56:34,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f541eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:34, skipping insertion in model container [2020-12-22 06:56:34,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:34" (1/1) ... [2020-12-22 06:56:34,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:56:35,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:56:35,307 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_product35.cil.c[15762,15775] [2020-12-22 06:56:35,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:35,331 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:56:35,399 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_product35.cil.c[15762,15775] [2020-12-22 06:56:35,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:35,445 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:56:35,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35 WrapperNode [2020-12-22 06:56:35,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:35,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:35,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:56:35,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:56:35,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:35,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:56:35,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:56:35,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:56:35,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:56:35,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:56:35,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:56:35,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:56:35,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (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 06:56:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:56:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:56:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:56:35,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:56:36,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:56:36,546 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2020-12-22 06:56:36,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:36 BoogieIcfgContainer [2020-12-22 06:56:36,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:56:36,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:56:36,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:56:36,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:56:36,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:34" (1/3) ... [2020-12-22 06:56:36,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17872464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:36, skipping insertion in model container [2020-12-22 06:56:36,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (2/3) ... [2020-12-22 06:56:36,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17872464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:36, skipping insertion in model container [2020-12-22 06:56:36,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:36" (3/3) ... [2020-12-22 06:56:36,557 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2020-12-22 06:56:36,563 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:56:36,568 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:56:36,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:56:36,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:56:36,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:56:36,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:56:36,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:56:36,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:56:36,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:56:36,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:56:36,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:56:36,632 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-12-22 06:56:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:56:36,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:36,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:36,639 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:36,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:36,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1355288485, now seen corresponding path program 1 times [2020-12-22 06:56:36,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:36,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133166953] [2020-12-22 06:56:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:36,957 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 06:56:36,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133166953] [2020-12-22 06:56:36,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:36,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:36,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603808918] [2020-12-22 06:56:36,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:56:36,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:36,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:56:36,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:36,986 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 2 states. [2020-12-22 06:56:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:37,033 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2020-12-22 06:56:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:56:37,034 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:56:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:37,052 INFO L225 Difference]: With dead ends: 154 [2020-12-22 06:56:37,053 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 06:56:37,056 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 06:56:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 06:56:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-22 06:56:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 06:56:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2020-12-22 06:56:37,099 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2020-12-22 06:56:37,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:37,099 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2020-12-22 06:56:37,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:56:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2020-12-22 06:56:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:56:37,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,101 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 06:56:37,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:56:37,102 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1892921914, now seen corresponding path program 1 times [2020-12-22 06:56:37,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267154906] [2020-12-22 06:56:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:37,209 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 06:56:37,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267154906] [2020-12-22 06:56:37,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:37,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:37,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510352189] [2020-12-22 06:56:37,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:37,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:37,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:37,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:37,213 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 3 states. [2020-12-22 06:56:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:37,233 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2020-12-22 06:56:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:37,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:56:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:37,235 INFO L225 Difference]: With dead ends: 76 [2020-12-22 06:56:37,236 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 06:56:37,237 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 06:56:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 06:56:37,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-22 06:56:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 06:56:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-12-22 06:56:37,243 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2020-12-22 06:56:37,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:37,243 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-12-22 06:56:37,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:37,243 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2020-12-22 06:56:37,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:56:37,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,244 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 06:56:37,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:56:37,245 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1160602350, now seen corresponding path program 1 times [2020-12-22 06:56:37,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311225292] [2020-12-22 06:56:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:37,399 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 06:56:37,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311225292] [2020-12-22 06:56:37,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:37,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:37,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511110540] [2020-12-22 06:56:37,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:37,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:37,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:37,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:37,407 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 6 states. [2020-12-22 06:56:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:37,699 INFO L93 Difference]: Finished difference Result 119 states and 175 transitions. [2020-12-22 06:56:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:37,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 06:56:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:37,703 INFO L225 Difference]: With dead ends: 119 [2020-12-22 06:56:37,704 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 06:56:37,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 06:56:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 55. [2020-12-22 06:56:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 06:56:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2020-12-22 06:56:37,734 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 22 [2020-12-22 06:56:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:37,735 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2020-12-22 06:56:37,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2020-12-22 06:56:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 06:56:37,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,738 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 06:56:37,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:56:37,738 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1572373846, now seen corresponding path program 1 times [2020-12-22 06:56:37,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24718634] [2020-12-22 06:56:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:37,896 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 06:56:37,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24718634] [2020-12-22 06:56:37,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:37,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:37,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214558179] [2020-12-22 06:56:37,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:37,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:37,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:37,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:37,902 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 3 states. [2020-12-22 06:56:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:37,941 INFO L93 Difference]: Finished difference Result 125 states and 184 transitions. [2020-12-22 06:56:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:37,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 06:56:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:37,947 INFO L225 Difference]: With dead ends: 125 [2020-12-22 06:56:37,947 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 06:56:37,948 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 06:56:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 06:56:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-12-22 06:56:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 06:56:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-12-22 06:56:37,973 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 23 [2020-12-22 06:56:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:37,973 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-12-22 06:56:37,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-12-22 06:56:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:56:37,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,975 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 06:56:37,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:56:37,976 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1956458727, now seen corresponding path program 1 times [2020-12-22 06:56:37,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493506299] [2020-12-22 06:56:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:38,117 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 06:56:38,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493506299] [2020-12-22 06:56:38,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:38,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:56:38,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594857353] [2020-12-22 06:56:38,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:56:38,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:38,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:56:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:38,122 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 8 states. [2020-12-22 06:56:38,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:38,539 INFO L93 Difference]: Finished difference Result 458 states and 673 transitions. [2020-12-22 06:56:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:56:38,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-22 06:56:38,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:38,544 INFO L225 Difference]: With dead ends: 458 [2020-12-22 06:56:38,545 INFO L226 Difference]: Without dead ends: 390 [2020-12-22 06:56:38,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:56:38,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-12-22 06:56:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 189. [2020-12-22 06:56:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-22 06:56:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2020-12-22 06:56:38,575 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 25 [2020-12-22 06:56:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:38,576 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2020-12-22 06:56:38,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:56:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2020-12-22 06:56:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 06:56:38,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:38,579 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-12-22 06:56:38,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:56:38,579 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:38,580 INFO L82 PathProgramCache]: Analyzing trace with hash -792985208, now seen corresponding path program 1 times [2020-12-22 06:56:38,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:38,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203178121] [2020-12-22 06:56:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:38,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203178121] [2020-12-22 06:56:38,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582573112] [2020-12-22 06:56:38,635 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 06:56:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:38,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:56:38,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:38,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 06:56:38,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2020-12-22 06:56:38,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395953129] [2020-12-22 06:56:38,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:38,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:38,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:38,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:38,898 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand 4 states. [2020-12-22 06:56:39,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:39,080 INFO L93 Difference]: Finished difference Result 423 states and 603 transitions. [2020-12-22 06:56:39,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:39,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-12-22 06:56:39,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:39,082 INFO L225 Difference]: With dead ends: 423 [2020-12-22 06:56:39,082 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 06:56:39,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 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 06:56:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 06:56:39,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 287. [2020-12-22 06:56:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-22 06:56:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 406 transitions. [2020-12-22 06:56:39,111 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 406 transitions. Word has length 40 [2020-12-22 06:56:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:39,112 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 406 transitions. [2020-12-22 06:56:39,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 406 transitions. [2020-12-22 06:56:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:56:39,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:39,114 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] [2020-12-22 06:56:39,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 06:56:39,330 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:39,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1758708758, now seen corresponding path program 1 times [2020-12-22 06:56:39,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:39,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409050943] [2020-12-22 06:56:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,393 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 06:56:39,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409050943] [2020-12-22 06:56:39,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:39,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:39,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681842254] [2020-12-22 06:56:39,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:39,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:39,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:39,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:39,397 INFO L87 Difference]: Start difference. First operand 287 states and 406 transitions. Second operand 5 states. [2020-12-22 06:56:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:39,471 INFO L93 Difference]: Finished difference Result 875 states and 1230 transitions. [2020-12-22 06:56:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:39,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-22 06:56:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:39,476 INFO L225 Difference]: With dead ends: 875 [2020-12-22 06:56:39,477 INFO L226 Difference]: Without dead ends: 594 [2020-12-22 06:56:39,478 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 06:56:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-12-22 06:56:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 299. [2020-12-22 06:56:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-12-22 06:56:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 418 transitions. [2020-12-22 06:56:39,513 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 418 transitions. Word has length 44 [2020-12-22 06:56:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:39,513 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 418 transitions. [2020-12-22 06:56:39,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 418 transitions. [2020-12-22 06:56:39,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:56:39,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:39,515 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] [2020-12-22 06:56:39,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:56:39,516 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:39,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:39,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1899257368, now seen corresponding path program 1 times [2020-12-22 06:56:39,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:39,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885157866] [2020-12-22 06:56:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,561 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 06:56:39,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885157866] [2020-12-22 06:56:39,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:39,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:39,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696004850] [2020-12-22 06:56:39,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:39,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:39,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:39,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:39,564 INFO L87 Difference]: Start difference. First operand 299 states and 418 transitions. Second operand 4 states. [2020-12-22 06:56:39,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:39,626 INFO L93 Difference]: Finished difference Result 691 states and 965 transitions. [2020-12-22 06:56:39,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:39,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 06:56:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:39,628 INFO L225 Difference]: With dead ends: 691 [2020-12-22 06:56:39,629 INFO L226 Difference]: Without dead ends: 398 [2020-12-22 06:56:39,629 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 06:56:39,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-22 06:56:39,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 274. [2020-12-22 06:56:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-22 06:56:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 380 transitions. [2020-12-22 06:56:39,659 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 380 transitions. Word has length 44 [2020-12-22 06:56:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:39,660 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 380 transitions. [2020-12-22 06:56:39,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 380 transitions. [2020-12-22 06:56:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:56:39,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:39,661 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] [2020-12-22 06:56:39,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:56:39,662 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:39,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:39,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1942803224, now seen corresponding path program 1 times [2020-12-22 06:56:39,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:39,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750124070] [2020-12-22 06:56:39,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,738 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 06:56:39,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750124070] [2020-12-22 06:56:39,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763041963] [2020-12-22 06:56:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 06:56:39,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:39,931 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 06:56:39,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:56:39,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-22 06:56:39,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623379980] [2020-12-22 06:56:39,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:56:39,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:39,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:56:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:39,934 INFO L87 Difference]: Start difference. First operand 274 states and 380 transitions. Second operand 8 states. [2020-12-22 06:56:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,277 INFO L93 Difference]: Finished difference Result 683 states and 950 transitions. [2020-12-22 06:56:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:56:40,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-22 06:56:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,281 INFO L225 Difference]: With dead ends: 683 [2020-12-22 06:56:40,281 INFO L226 Difference]: Without dead ends: 456 [2020-12-22 06:56:40,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:56:40,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-12-22 06:56:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 236. [2020-12-22 06:56:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-12-22 06:56:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 319 transitions. [2020-12-22 06:56:40,314 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 319 transitions. Word has length 45 [2020-12-22 06:56:40,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,316 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 319 transitions. [2020-12-22 06:56:40,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:56:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 319 transitions. [2020-12-22 06:56:40,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:56:40,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,317 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] [2020-12-22 06:56:40,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:40,534 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,534 INFO L82 PathProgramCache]: Analyzing trace with hash 511998341, now seen corresponding path program 2 times [2020-12-22 06:56:40,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851309296] [2020-12-22 06:56:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:40,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:40,674 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:40,729 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:56:40,729 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:56:40,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:56:40,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:56:40 BoogieIcfgContainer [2020-12-22 06:56:40,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:56:40,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:56:40,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:56:40,862 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:56:40,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:36" (3/4) ... [2020-12-22 06:56:40,866 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:56:41,014 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec4_product35.cil.c-witness.graphml [2020-12-22 06:56:41,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:56:41,016 INFO L168 Benchmark]: Toolchain (without parser) took 6083.98 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 125.3 MB in the beginning and 81.9 MB in the end (delta: 43.4 MB). Peak memory consumption was 78.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:41,017 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:56:41,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.32 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 104.4 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:41,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.68 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 101.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:41,018 INFO L168 Benchmark]: Boogie Preprocessor took 88.64 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 99.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:41,021 INFO L168 Benchmark]: RCFGBuilder took 891.85 ms. Allocated memory is still 151.0 MB. Free memory was 99.2 MB in the beginning and 108.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:41,021 INFO L168 Benchmark]: TraceAbstraction took 4311.00 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 108.4 MB in the beginning and 105.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 36.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:41,021 INFO L168 Benchmark]: Witness Printer took 153.21 ms. Allocated memory is still 184.5 MB. Free memory was 105.5 MB in the beginning and 81.9 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:41,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 508.32 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 104.4 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 119.68 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 101.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.64 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 99.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 891.85 ms. Allocated memory is still 151.0 MB. Free memory was 99.2 MB in the beginning and 108.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4311.00 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 108.4 MB in the beginning and 105.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 36.5 MB. Max. memory is 8.0 GB. * Witness Printer took 153.21 ms. Allocated memory is still 184.5 MB. Free memory was 105.5 MB in the beginning and 81.9 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 786]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L150] int pumpRunning = 0; [L151] int systemActive = 1; [L317] int cleanupTimeShifts = 4; [L585] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L826] int waterLevel = 1; [L827] int methaneLevelCritical = 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] [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] 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] [L844] COND TRUE waterLevel < 2 [L845] 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] [L157] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L906] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L909] COND FALSE !(waterLevel < 2) [L913] retValue_acc = 0 [L914] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] tmp = isHighWaterLevel() [L193] COND TRUE \read(tmp) [L214] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L123] tmp = getWaterLevel() [L125] 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] [L157] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L832] COND TRUE waterLevel > 0 [L833] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L189] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L123] tmp = getWaterLevel() [L125] 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] [L157] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L832] COND TRUE waterLevel > 0 [L833] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L189] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L123] tmp = getWaterLevel() [L125] COND TRUE tmp == 0 [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L127] tmp___0 = isPumpRunning() [L129] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L786] 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, 80 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 692 SDtfs, 1123 SDslu, 1507 SDs, 0 SdLazy, 221 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=299occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 887 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 24417 SizeOfPredicates, 3 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 73/84 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...