/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_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:53:41,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:53:41,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:53:41,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:53:41,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:53:41,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:53:41,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:53:41,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:53:41,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:53:41,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:53:41,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:53:41,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:53:41,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:53:41,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:53:41,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:53:41,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:53:41,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:53:41,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:53:41,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:53:41,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:53:41,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:53:41,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:53:41,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:53:41,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:53:41,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:53:41,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:53:41,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:53:41,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:53:41,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:53:41,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:53:41,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:53:41,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:53:41,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:53:41,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:53:41,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:53:41,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:53:41,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:53:41,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:53:41,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:53:41,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:53:41,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:53:41,146 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:53:41,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:53:41,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:53:41,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:53:41,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:53:41,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:53:41,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:53:41,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:53:41,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:53:41,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:53:41,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:53:41,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:53:41,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:53:41,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:53:41,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:53:41,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:53:41,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:53:41,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:53:41,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:53:41,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:53:41,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:53:41,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:53:41,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:53:41,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:53:41,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:53:41,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:53:41,532 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:53:41,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2020-12-22 06:53:41,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82c0a5cb0/c15bbad0c46842a197c0ac1a7d909da5/FLAG9e7ed1124 [2020-12-22 06:53:42,435 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:53:42,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2020-12-22 06:53:42,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82c0a5cb0/c15bbad0c46842a197c0ac1a7d909da5/FLAG9e7ed1124 [2020-12-22 06:53:42,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82c0a5cb0/c15bbad0c46842a197c0ac1a7d909da5 [2020-12-22 06:53:42,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:53:42,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:53:42,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:42,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:53:42,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:53:42,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:42" (1/1) ... [2020-12-22 06:53:42,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6e617a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:42, skipping insertion in model container [2020-12-22 06:53:42,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:42" (1/1) ... [2020-12-22 06:53:42,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:53:42,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:53:42,987 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_spec1_product53.cil.c[1720,1733] [2020-12-22 06:53:43,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:43,157 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:53:43,193 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_spec1_product53.cil.c[1720,1733] [2020-12-22 06:53:43,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:43,350 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:53:43,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43 WrapperNode [2020-12-22 06:53:43,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:43,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:43,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:53:43,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:53:43,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (1/1) ... [2020-12-22 06:53:43,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (1/1) ... [2020-12-22 06:53:43,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:43,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:53:43,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:53:43,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:53:43,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (1/1) ... [2020-12-22 06:53:43,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (1/1) ... [2020-12-22 06:53:43,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (1/1) ... [2020-12-22 06:53:43,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (1/1) ... [2020-12-22 06:53:43,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (1/1) ... [2020-12-22 06:53:43,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (1/1) ... [2020-12-22 06:53:43,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (1/1) ... [2020-12-22 06:53:43,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:53:43,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:53:43,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:53:43,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:53:43,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (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 06:53:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:53:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:53:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:53:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:53:45,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:53:45,196 INFO L299 CfgBuilder]: Removed 276 assume(true) statements. [2020-12-22 06:53:45,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:45 BoogieIcfgContainer [2020-12-22 06:53:45,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:53:45,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:53:45,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:53:45,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:53:45,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:53:42" (1/3) ... [2020-12-22 06:53:45,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1378114b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:45, skipping insertion in model container [2020-12-22 06:53:45,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:43" (2/3) ... [2020-12-22 06:53:45,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1378114b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:45, skipping insertion in model container [2020-12-22 06:53:45,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:45" (3/3) ... [2020-12-22 06:53:45,209 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-12-22 06:53:45,216 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:53:45,222 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:53:45,239 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:53:45,268 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:53:45,269 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:53:45,269 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:53:45,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:53:45,269 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:53:45,270 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:53:45,270 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:53:45,270 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:53:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-12-22 06:53:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:53:45,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:45,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:45,300 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:45,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:45,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2002794138, now seen corresponding path program 1 times [2020-12-22 06:53:45,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:45,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416719604] [2020-12-22 06:53:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:45,687 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 06:53:45,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416719604] [2020-12-22 06:53:45,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:45,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:45,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804738775] [2020-12-22 06:53:45,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:53:45,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:45,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:53:45,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:53:45,721 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2020-12-22 06:53:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:45,808 INFO L93 Difference]: Finished difference Result 372 states and 569 transitions. [2020-12-22 06:53:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:53:45,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:53:45,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:45,848 INFO L225 Difference]: With dead ends: 372 [2020-12-22 06:53:45,848 INFO L226 Difference]: Without dead ends: 185 [2020-12-22 06:53:45,854 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 06:53:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-22 06:53:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-12-22 06:53:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-22 06:53:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2020-12-22 06:53:45,938 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 16 [2020-12-22 06:53:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:45,939 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-12-22 06:53:45,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:53:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2020-12-22 06:53:45,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:53:45,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:45,942 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 06:53:45,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:53:45,944 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash 956037241, now seen corresponding path program 1 times [2020-12-22 06:53:45,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:45,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784309480] [2020-12-22 06:53:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:46,106 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 06:53:46,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784309480] [2020-12-22 06:53:46,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:46,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:46,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796878009] [2020-12-22 06:53:46,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:46,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:46,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:46,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:46,110 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand 3 states. [2020-12-22 06:53:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:46,133 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2020-12-22 06:53:46,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:46,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:53:46,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:46,141 INFO L225 Difference]: With dead ends: 185 [2020-12-22 06:53:46,141 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 06:53:46,143 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 06:53:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 06:53:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-22 06:53:46,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 06:53:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2020-12-22 06:53:46,150 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 17 [2020-12-22 06:53:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:46,150 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2020-12-22 06:53:46,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:46,151 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2020-12-22 06:53:46,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:53:46,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:46,152 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 06:53:46,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:53:46,153 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:46,155 INFO L82 PathProgramCache]: Analyzing trace with hash 748559286, now seen corresponding path program 1 times [2020-12-22 06:53:46,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:46,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276617917] [2020-12-22 06:53:46,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:46,360 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 06:53:46,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276617917] [2020-12-22 06:53:46,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:46,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:46,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807626305] [2020-12-22 06:53:46,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:53:46,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:46,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:53:46,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:53:46,365 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand 6 states. [2020-12-22 06:53:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:46,586 INFO L93 Difference]: Finished difference Result 136 states and 204 transitions. [2020-12-22 06:53:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:53:46,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 06:53:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:46,590 INFO L225 Difference]: With dead ends: 136 [2020-12-22 06:53:46,590 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 06:53:46,591 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 06:53:46,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 06:53:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-22 06:53:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 06:53:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2020-12-22 06:53:46,601 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 22 [2020-12-22 06:53:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:46,605 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2020-12-22 06:53:46,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:53:46,605 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2020-12-22 06:53:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:53:46,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:46,607 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 06:53:46,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:53:46,608 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:46,609 INFO L82 PathProgramCache]: Analyzing trace with hash -682519882, now seen corresponding path program 1 times [2020-12-22 06:53:46,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:46,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487481538] [2020-12-22 06:53:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:46,694 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 06:53:46,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487481538] [2020-12-22 06:53:46,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:46,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:46,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714918875] [2020-12-22 06:53:46,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:46,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:46,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:46,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:46,700 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand 3 states. [2020-12-22 06:53:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:46,740 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2020-12-22 06:53:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:46,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 06:53:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:46,742 INFO L225 Difference]: With dead ends: 145 [2020-12-22 06:53:46,742 INFO L226 Difference]: Without dead ends: 80 [2020-12-22 06:53:46,743 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 06:53:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-22 06:53:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-12-22 06:53:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 06:53:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2020-12-22 06:53:46,751 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 25 [2020-12-22 06:53:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:46,752 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2020-12-22 06:53:46,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2020-12-22 06:53:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:46,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:46,753 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] [2020-12-22 06:53:46,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:53:46,754 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:46,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:46,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1459548505, now seen corresponding path program 1 times [2020-12-22 06:53:46,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:46,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295555035] [2020-12-22 06:53:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:46,865 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 06:53:46,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295555035] [2020-12-22 06:53:46,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:46,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:46,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931594033] [2020-12-22 06:53:46,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:46,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:46,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:46,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:46,868 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand 5 states. [2020-12-22 06:53:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:47,051 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2020-12-22 06:53:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:47,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:47,056 INFO L225 Difference]: With dead ends: 204 [2020-12-22 06:53:47,056 INFO L226 Difference]: Without dead ends: 132 [2020-12-22 06:53:47,057 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 06:53:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-22 06:53:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2020-12-22 06:53:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-22 06:53:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2020-12-22 06:53:47,074 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 31 [2020-12-22 06:53:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:47,075 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2020-12-22 06:53:47,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:47,075 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2020-12-22 06:53:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:47,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:47,079 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] [2020-12-22 06:53:47,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:53:47,080 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:47,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1202962538, now seen corresponding path program 1 times [2020-12-22 06:53:47,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:47,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34545600] [2020-12-22 06:53:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:47,244 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 06:53:47,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34545600] [2020-12-22 06:53:47,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:47,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:47,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406126755] [2020-12-22 06:53:47,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:47,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:47,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:47,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:47,249 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 5 states. [2020-12-22 06:53:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:47,405 INFO L93 Difference]: Finished difference Result 431 states and 600 transitions. [2020-12-22 06:53:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:53:47,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:47,408 INFO L225 Difference]: With dead ends: 431 [2020-12-22 06:53:47,409 INFO L226 Difference]: Without dead ends: 350 [2020-12-22 06:53:47,411 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 06:53:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-12-22 06:53:47,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 162. [2020-12-22 06:53:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-22 06:53:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 221 transitions. [2020-12-22 06:53:47,461 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 221 transitions. Word has length 31 [2020-12-22 06:53:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:47,462 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 221 transitions. [2020-12-22 06:53:47,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 221 transitions. [2020-12-22 06:53:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 06:53:47,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:47,464 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] [2020-12-22 06:53:47,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:53:47,465 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:47,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:47,470 INFO L82 PathProgramCache]: Analyzing trace with hash 552949620, now seen corresponding path program 1 times [2020-12-22 06:53:47,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:47,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79050373] [2020-12-22 06:53:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:47,586 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 06:53:47,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79050373] [2020-12-22 06:53:47,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:47,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:47,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790342832] [2020-12-22 06:53:47,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:47,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:47,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:47,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:47,590 INFO L87 Difference]: Start difference. First operand 162 states and 221 transitions. Second operand 5 states. [2020-12-22 06:53:47,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:47,760 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2020-12-22 06:53:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:53:47,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-12-22 06:53:47,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:47,766 INFO L225 Difference]: With dead ends: 470 [2020-12-22 06:53:47,766 INFO L226 Difference]: Without dead ends: 468 [2020-12-22 06:53:47,768 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 06:53:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-12-22 06:53:47,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 162. [2020-12-22 06:53:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-22 06:53:47,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2020-12-22 06:53:47,788 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 32 [2020-12-22 06:53:47,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:47,790 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2020-12-22 06:53:47,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2020-12-22 06:53:47,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 06:53:47,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:47,792 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] [2020-12-22 06:53:47,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:53:47,793 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:47,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:47,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1792378863, now seen corresponding path program 1 times [2020-12-22 06:53:47,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:47,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114612416] [2020-12-22 06:53:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:47,866 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 06:53:47,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114612416] [2020-12-22 06:53:47,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:47,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:47,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070642537] [2020-12-22 06:53:47,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:53:47,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:47,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:53:47,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:53:47,869 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand 4 states. [2020-12-22 06:53:47,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:47,942 INFO L93 Difference]: Finished difference Result 388 states and 522 transitions. [2020-12-22 06:53:47,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:53:47,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-12-22 06:53:47,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:47,945 INFO L225 Difference]: With dead ends: 388 [2020-12-22 06:53:47,945 INFO L226 Difference]: Without dead ends: 232 [2020-12-22 06:53:47,946 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 06:53:47,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-12-22 06:53:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 174. [2020-12-22 06:53:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-22 06:53:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2020-12-22 06:53:47,965 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 32 [2020-12-22 06:53:47,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:47,967 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2020-12-22 06:53:47,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:53:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2020-12-22 06:53:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 06:53:47,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:47,977 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] [2020-12-22 06:53:47,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:53:47,977 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:47,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:47,978 INFO L82 PathProgramCache]: Analyzing trace with hash 2050544301, now seen corresponding path program 1 times [2020-12-22 06:53:47,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:47,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156659850] [2020-12-22 06:53:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:48,042 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 06:53:48,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156659850] [2020-12-22 06:53:48,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:48,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:48,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567952679] [2020-12-22 06:53:48,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:48,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:48,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:48,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:48,052 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 3 states. [2020-12-22 06:53:48,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:48,113 INFO L93 Difference]: Finished difference Result 394 states and 524 transitions. [2020-12-22 06:53:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:48,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-22 06:53:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:48,118 INFO L225 Difference]: With dead ends: 394 [2020-12-22 06:53:48,118 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 06:53:48,119 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 06:53:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 06:53:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-22 06:53:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-22 06:53:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 294 transitions. [2020-12-22 06:53:48,146 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 294 transitions. Word has length 32 [2020-12-22 06:53:48,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:48,148 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 294 transitions. [2020-12-22 06:53:48,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 294 transitions. [2020-12-22 06:53:48,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 06:53:48,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:48,152 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 06:53:48,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:53:48,152 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:48,153 INFO L82 PathProgramCache]: Analyzing trace with hash 979497771, now seen corresponding path program 1 times [2020-12-22 06:53:48,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:48,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020416005] [2020-12-22 06:53:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:48,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:48,318 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:48,396 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:53:48,396 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:53:48,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:53:48,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:53:48 BoogieIcfgContainer [2020-12-22 06:53:48,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:53:48,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:53:48,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:53:48,518 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:53:48,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:45" (3/4) ... [2020-12-22 06:53:48,521 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:53:48,647 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec1_product53.cil.c-witness.graphml [2020-12-22 06:53:48,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:53:48,654 INFO L168 Benchmark]: Toolchain (without parser) took 5931.71 ms. Allocated memory was 151.0 MB in the beginning and 197.1 MB in the end (delta: 46.1 MB). Free memory was 124.8 MB in the beginning and 118.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:48,654 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:53:48,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.03 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:48,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.62 ms. Allocated memory is still 151.0 MB. Free memory was 102.5 MB in the beginning and 97.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:48,656 INFO L168 Benchmark]: Boogie Preprocessor took 148.14 ms. Allocated memory is still 151.0 MB. Free memory was 97.5 MB in the beginning and 130.1 MB in the end (delta: -32.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:48,657 INFO L168 Benchmark]: RCFGBuilder took 1594.23 ms. Allocated memory was 151.0 MB in the beginning and 197.1 MB in the end (delta: 46.1 MB). Free memory was 130.1 MB in the beginning and 174.6 MB in the end (delta: -44.4 MB). Peak memory consumption was 86.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:48,657 INFO L168 Benchmark]: TraceAbstraction took 3315.37 ms. Allocated memory is still 197.1 MB. Free memory was 174.1 MB in the beginning and 131.8 MB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:48,658 INFO L168 Benchmark]: Witness Printer took 130.20 ms. Allocated memory is still 197.1 MB. Free memory was 131.8 MB in the beginning and 118.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:48,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 627.03 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 102.62 ms. Allocated memory is still 151.0 MB. Free memory was 102.5 MB in the beginning and 97.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 148.14 ms. Allocated memory is still 151.0 MB. Free memory was 97.5 MB in the beginning and 130.1 MB in the end (delta: -32.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1594.23 ms. Allocated memory was 151.0 MB in the beginning and 197.1 MB in the end (delta: 46.1 MB). Free memory was 130.1 MB in the beginning and 174.6 MB in the end (delta: -44.4 MB). Peak memory consumption was 86.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3315.37 ms. Allocated memory is still 197.1 MB. Free memory was 174.1 MB in the beginning and 131.8 MB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 8.0 GB. * Witness Printer took 130.20 ms. Allocated memory is still 197.1 MB. Free memory was 131.8 MB in the beginning and 118.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 75]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L556] int pumpRunning = 0; [L557] int systemActive = 1; [L880] int waterLevel = 1; [L881] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L527] int retValue_acc ; [L528] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L870] int retValue_acc ; [L873] retValue_acc = 1 [L874] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L534] tmp = valid_product() [L536] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L780] int splverifierCounter ; [L781] int tmp ; [L782] int tmp___0 ; [L783] int tmp___1 ; [L784] int tmp___2 ; [L787] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L789] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L791] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L797] tmp = __VERIFIER_nondet_int() [L799] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L898] COND TRUE waterLevel < 2 [L899] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L807] tmp___0 = __VERIFIER_nondet_int() [L809] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L910] COND FALSE !(\read(methaneLevelCritical)) [L913] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L817] tmp___2 = __VERIFIER_nondet_int() [L819] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L563] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L570] COND TRUE \read(systemActive) [L644] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L647] COND FALSE !(\read(pumpRunning)) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L621] COND FALSE !(\read(pumpRunning)) [L592] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] COND TRUE ! pumpRunning [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L960] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L963] COND FALSE !(waterLevel < 2) [L967] retValue_acc = 0 [L968] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] tmp = isHighWaterLevel() [L599] COND TRUE \read(tmp) [L672] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L919] int retValue_acc ; [L922] retValue_acc = methaneLevelCritical [L923] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L75] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 189 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1137 SDtfs, 1406 SDslu, 1237 SDs, 0 SdLazy, 199 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=9, 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, 599 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 12994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...