./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product39.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dac33dda1b1afd5a9a188848bdc9374832c4af5e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:41:38,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:38,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:38,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:38,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:38,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:38,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:38,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:38,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:38,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:38,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:38,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:38,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:38,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:38,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:38,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:38,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:38,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:38,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:38,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:38,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:38,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:38,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:38,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:38,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:38,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:38,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:38,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:38,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:38,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:38,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:38,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:38,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:38,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:38,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:38,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:38,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:38,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:38,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:38,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:38,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:38,671 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:38,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:38,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:38,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:38,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:38,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:38,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:38,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:38,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:38,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:38,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:38,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:38,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:38,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:38,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:38,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:38,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:38,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:38,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:38,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:38,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:38,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:38,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:38,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:38,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:38,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:38,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:38,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:38,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:38,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:38,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac33dda1b1afd5a9a188848bdc9374832c4af5e [2020-10-20 01:41:38,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:38,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:38,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:38,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:38,920 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:38,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product39.cil.c [2020-10-20 01:41:39,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac939c798/088790a1555542f3a0180930d33e84dc/FLAG15dd04701 [2020-10-20 01:41:39,561 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:39,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product39.cil.c [2020-10-20 01:41:39,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac939c798/088790a1555542f3a0180930d33e84dc/FLAG15dd04701 [2020-10-20 01:41:39,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac939c798/088790a1555542f3a0180930d33e84dc [2020-10-20 01:41:39,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:39,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:39,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:39,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:39,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:39,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:39" (1/1) ... [2020-10-20 01:41:39,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557efa49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:39, skipping insertion in model container [2020-10-20 01:41:39,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:39" (1/1) ... [2020-10-20 01:41:40,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:40,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:40,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:40,498 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:40,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:40,658 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:40,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40 WrapperNode [2020-10-20 01:41:40,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:40,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:40,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:40,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:40,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (1/1) ... [2020-10-20 01:41:40,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (1/1) ... [2020-10-20 01:41:40,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:40,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:40,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:40,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:40,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (1/1) ... [2020-10-20 01:41:40,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (1/1) ... [2020-10-20 01:41:40,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (1/1) ... [2020-10-20 01:41:40,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (1/1) ... [2020-10-20 01:41:40,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (1/1) ... [2020-10-20 01:41:40,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (1/1) ... [2020-10-20 01:41:40,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (1/1) ... [2020-10-20 01:41:40,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:40,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:40,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:40,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:40,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (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 [2020-10-20 01:41:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:40,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:41,884 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:41,884 INFO L298 CfgBuilder]: Removed 166 assume(true) statements. [2020-10-20 01:41:41,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:41 BoogieIcfgContainer [2020-10-20 01:41:41,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:41,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:41,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:41,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:41,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:39" (1/3) ... [2020-10-20 01:41:41,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f208bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:41, skipping insertion in model container [2020-10-20 01:41:41,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:40" (2/3) ... [2020-10-20 01:41:41,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f208bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:41, skipping insertion in model container [2020-10-20 01:41:41,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:41" (3/3) ... [2020-10-20 01:41:41,896 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-10-20 01:41:41,908 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:41,916 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:41,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:41,958 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:41,958 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:41,958 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:41,959 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:41,959 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:41,959 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:41,959 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:41,959 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-20 01:41:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:41,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:41,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1368208383, now seen corresponding path program 1 times [2020-10-20 01:41:42,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:42,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752688643] [2020-10-20 01:41:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:42,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752688643] [2020-10-20 01:41:42,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:42,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:42,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292864968] [2020-10-20 01:41:42,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:42,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:42,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:42,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:42,325 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-10-20 01:41:42,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:42,390 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-10-20 01:41:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:42,392 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:42,410 INFO L225 Difference]: With dead ends: 223 [2020-10-20 01:41:42,410 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 01:41:42,414 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 [2020-10-20 01:41:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 01:41:42,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-20 01:41:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-20 01:41:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-10-20 01:41:42,453 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-10-20 01:41:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:42,453 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-10-20 01:41:42,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-10-20 01:41:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:42,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:42,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:42,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:42,455 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1880002016, now seen corresponding path program 1 times [2020-10-20 01:41:42,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:42,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778152305] [2020-10-20 01:41:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:42,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778152305] [2020-10-20 01:41:42,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:42,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:42,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785750116] [2020-10-20 01:41:42,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:42,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:42,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:42,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:42,556 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-10-20 01:41:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:42,573 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-10-20 01:41:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:42,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:42,575 INFO L225 Difference]: With dead ends: 109 [2020-10-20 01:41:42,575 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 01:41:42,577 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 [2020-10-20 01:41:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 01:41:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-20 01:41:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 01:41:42,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-10-20 01:41:42,583 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-10-20 01:41:42,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:42,583 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-10-20 01:41:42,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-10-20 01:41:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:42,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:42,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:42,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:42,585 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:42,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2020-10-20 01:41:42,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:42,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594293807] [2020-10-20 01:41:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:42,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594293807] [2020-10-20 01:41:42,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:42,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:42,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423462355] [2020-10-20 01:41:42,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:42,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:42,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:42,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:42,737 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 3 states. [2020-10-20 01:41:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:42,757 INFO L93 Difference]: Finished difference Result 129 states and 192 transitions. [2020-10-20 01:41:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:42,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 01:41:42,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:42,760 INFO L225 Difference]: With dead ends: 129 [2020-10-20 01:41:42,760 INFO L226 Difference]: Without dead ends: 88 [2020-10-20 01:41:42,761 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 [2020-10-20 01:41:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-20 01:41:42,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-10-20 01:41:42,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-20 01:41:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 125 transitions. [2020-10-20 01:41:42,773 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 125 transitions. Word has length 22 [2020-10-20 01:41:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:42,773 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 125 transitions. [2020-10-20 01:41:42,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 125 transitions. [2020-10-20 01:41:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:41:42,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:42,775 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] [2020-10-20 01:41:42,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:42,776 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:42,776 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2020-10-20 01:41:42,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:42,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460194010] [2020-10-20 01:41:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:42,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460194010] [2020-10-20 01:41:42,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:42,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:42,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461109768] [2020-10-20 01:41:42,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:42,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:42,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:42,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:42,866 INFO L87 Difference]: Start difference. First operand 84 states and 125 transitions. Second operand 3 states. [2020-10-20 01:41:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:42,916 INFO L93 Difference]: Finished difference Result 203 states and 306 transitions. [2020-10-20 01:41:42,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:42,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:41:42,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:42,918 INFO L225 Difference]: With dead ends: 203 [2020-10-20 01:41:42,918 INFO L226 Difference]: Without dead ends: 125 [2020-10-20 01:41:42,919 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 [2020-10-20 01:41:42,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-20 01:41:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2020-10-20 01:41:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 01:41:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 179 transitions. [2020-10-20 01:41:42,947 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 179 transitions. Word has length 24 [2020-10-20 01:41:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:42,948 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 179 transitions. [2020-10-20 01:41:42,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 179 transitions. [2020-10-20 01:41:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:42,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:42,953 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] [2020-10-20 01:41:42,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:42,954 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:42,954 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2020-10-20 01:41:42,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:42,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466128419] [2020-10-20 01:41:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:43,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466128419] [2020-10-20 01:41:43,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:43,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:43,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600795739] [2020-10-20 01:41:43,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:43,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:43,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:43,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:43,060 INFO L87 Difference]: Start difference. First operand 123 states and 179 transitions. Second operand 5 states. [2020-10-20 01:41:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:43,199 INFO L93 Difference]: Finished difference Result 619 states and 916 transitions. [2020-10-20 01:41:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:43,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 01:41:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:43,205 INFO L225 Difference]: With dead ends: 619 [2020-10-20 01:41:43,205 INFO L226 Difference]: Without dead ends: 502 [2020-10-20 01:41:43,208 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 [2020-10-20 01:41:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-20 01:41:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 230. [2020-10-20 01:41:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-20 01:41:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 331 transitions. [2020-10-20 01:41:43,253 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 331 transitions. Word has length 25 [2020-10-20 01:41:43,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:43,253 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 331 transitions. [2020-10-20 01:41:43,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 331 transitions. [2020-10-20 01:41:43,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:41:43,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:43,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:43,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:43,256 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:43,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:43,256 INFO L82 PathProgramCache]: Analyzing trace with hash 362368227, now seen corresponding path program 1 times [2020-10-20 01:41:43,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:43,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491103484] [2020-10-20 01:41:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:43,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491103484] [2020-10-20 01:41:43,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:43,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:43,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799543624] [2020-10-20 01:41:43,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:43,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:43,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:43,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:43,428 INFO L87 Difference]: Start difference. First operand 230 states and 331 transitions. Second operand 5 states. [2020-10-20 01:41:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:43,599 INFO L93 Difference]: Finished difference Result 660 states and 954 transitions. [2020-10-20 01:41:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:43,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:41:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:43,604 INFO L225 Difference]: With dead ends: 660 [2020-10-20 01:41:43,604 INFO L226 Difference]: Without dead ends: 658 [2020-10-20 01:41:43,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:43,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-20 01:41:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 230. [2020-10-20 01:41:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-20 01:41:43,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 329 transitions. [2020-10-20 01:41:43,635 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 329 transitions. Word has length 26 [2020-10-20 01:41:43,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:43,635 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 329 transitions. [2020-10-20 01:41:43,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:43,635 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 329 transitions. [2020-10-20 01:41:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:43,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:43,637 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] [2020-10-20 01:41:43,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:43,638 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:43,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:43,638 INFO L82 PathProgramCache]: Analyzing trace with hash 922855028, now seen corresponding path program 1 times [2020-10-20 01:41:43,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:43,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775438007] [2020-10-20 01:41:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:43,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775438007] [2020-10-20 01:41:43,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:43,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:43,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363609493] [2020-10-20 01:41:43,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:43,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:43,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:43,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:43,729 INFO L87 Difference]: Start difference. First operand 230 states and 329 transitions. Second operand 5 states. [2020-10-20 01:41:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:43,816 INFO L93 Difference]: Finished difference Result 634 states and 892 transitions. [2020-10-20 01:41:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:43,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 01:41:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:43,819 INFO L225 Difference]: With dead ends: 634 [2020-10-20 01:41:43,819 INFO L226 Difference]: Without dead ends: 410 [2020-10-20 01:41:43,820 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 [2020-10-20 01:41:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-20 01:41:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 254. [2020-10-20 01:41:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-20 01:41:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 353 transitions. [2020-10-20 01:41:43,855 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 353 transitions. Word has length 31 [2020-10-20 01:41:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:43,856 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 353 transitions. [2020-10-20 01:41:43,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:43,856 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 353 transitions. [2020-10-20 01:41:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:43,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:43,858 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] [2020-10-20 01:41:43,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:43,859 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:43,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:43,859 INFO L82 PathProgramCache]: Analyzing trace with hash 529828018, now seen corresponding path program 1 times [2020-10-20 01:41:43,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:43,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145231850] [2020-10-20 01:41:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:43,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145231850] [2020-10-20 01:41:43,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:43,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:43,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870844696] [2020-10-20 01:41:43,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:43,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:43,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:43,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:43,918 INFO L87 Difference]: Start difference. First operand 254 states and 353 transitions. Second operand 5 states. [2020-10-20 01:41:44,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:44,179 INFO L93 Difference]: Finished difference Result 718 states and 977 transitions. [2020-10-20 01:41:44,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:44,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 01:41:44,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:44,182 INFO L225 Difference]: With dead ends: 718 [2020-10-20 01:41:44,183 INFO L226 Difference]: Without dead ends: 470 [2020-10-20 01:41:44,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-20 01:41:44,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 270. [2020-10-20 01:41:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-20 01:41:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 369 transitions. [2020-10-20 01:41:44,206 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 369 transitions. Word has length 31 [2020-10-20 01:41:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:44,206 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 369 transitions. [2020-10-20 01:41:44,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 369 transitions. [2020-10-20 01:41:44,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:44,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:44,208 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] [2020-10-20 01:41:44,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:44,209 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:44,209 INFO L82 PathProgramCache]: Analyzing trace with hash 787993456, now seen corresponding path program 1 times [2020-10-20 01:41:44,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:44,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762274236] [2020-10-20 01:41:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:44,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762274236] [2020-10-20 01:41:44,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:44,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:44,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812039780] [2020-10-20 01:41:44,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:44,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:44,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:44,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:44,263 INFO L87 Difference]: Start difference. First operand 270 states and 369 transitions. Second operand 3 states. [2020-10-20 01:41:44,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:44,309 INFO L93 Difference]: Finished difference Result 638 states and 866 transitions. [2020-10-20 01:41:44,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:44,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-20 01:41:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:44,312 INFO L225 Difference]: With dead ends: 638 [2020-10-20 01:41:44,312 INFO L226 Difference]: Without dead ends: 374 [2020-10-20 01:41:44,313 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 [2020-10-20 01:41:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-10-20 01:41:44,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2020-10-20 01:41:44,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-20 01:41:44,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 495 transitions. [2020-10-20 01:41:44,352 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 495 transitions. Word has length 31 [2020-10-20 01:41:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:44,353 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 495 transitions. [2020-10-20 01:41:44,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 495 transitions. [2020-10-20 01:41:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:44,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:44,355 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] [2020-10-20 01:41:44,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:44,355 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:44,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:44,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1324766414, now seen corresponding path program 1 times [2020-10-20 01:41:44,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:44,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054406804] [2020-10-20 01:41:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:44,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:44,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:44,517 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:44,517 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:44,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:44,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:44 BoogieIcfgContainer [2020-10-20 01:41:44,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:44,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:44,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:44,649 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:44,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:41" (3/4) ... [2020-10-20 01:41:44,652 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:44,743 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:44,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:44,750 INFO L168 Benchmark]: Toolchain (without parser) took 4767.39 ms. Allocated memory was 36.7 MB in the beginning and 79.7 MB in the end (delta: 43.0 MB). Free memory was 17.6 MB in the beginning and 32.6 MB in the end (delta: -14.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:44,753 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 34.6 MB. Free memory was 11.7 MB in the beginning and 11.6 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-20 01:41:44,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.86 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 16.7 MB in the beginning and 28.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:44,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.18 ms. Allocated memory is still 46.7 MB. Free memory was 28.9 MB in the beginning and 25.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:44,758 INFO L168 Benchmark]: Boogie Preprocessor took 56.34 ms. Allocated memory is still 46.7 MB. Free memory was 25.0 MB in the beginning and 22.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:44,759 INFO L168 Benchmark]: RCFGBuilder took 1077.09 ms. Allocated memory was 46.7 MB in the beginning and 51.4 MB in the end (delta: 4.7 MB). Free memory was 22.2 MB in the beginning and 30.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:44,760 INFO L168 Benchmark]: TraceAbstraction took 2760.17 ms. Allocated memory was 51.4 MB in the beginning and 79.7 MB in the end (delta: 28.3 MB). Free memory was 30.4 MB in the beginning and 48.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:44,763 INFO L168 Benchmark]: Witness Printer took 95.38 ms. Allocated memory is still 79.7 MB. Free memory was 48.6 MB in the beginning and 32.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:44,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 34.6 MB. Free memory was 11.7 MB in the beginning and 11.6 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 673.86 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 16.7 MB in the beginning and 28.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 93.18 ms. Allocated memory is still 46.7 MB. Free memory was 28.9 MB in the beginning and 25.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 56.34 ms. Allocated memory is still 46.7 MB. Free memory was 25.0 MB in the beginning and 22.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1077.09 ms. Allocated memory was 46.7 MB in the beginning and 51.4 MB in the end (delta: 4.7 MB). Free memory was 22.2 MB in the beginning and 30.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2760.17 ms. Allocated memory was 51.4 MB in the beginning and 79.7 MB in the end (delta: 28.3 MB). Free memory was 30.4 MB in the beginning and 48.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 14.3 GB. * Witness Printer took 95.38 ms. Allocated memory is still 79.7 MB. Free memory was 48.6 MB in the beginning and 32.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L452] int waterLevel = 1; [L453] int methaneLevelCritical = 0; [L619] int pumpRunning = 0; [L620] int systemActive = 1; [L850] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L923] int retValue_acc ; [L924] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L841] int retValue_acc ; [L844] retValue_acc = 1 [L845] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L930] tmp = valid_product() [L932] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L550] int splverifierCounter ; [L551] int tmp ; [L552] int tmp___0 ; [L553] int tmp___1 ; [L554] int tmp___2 ; [L557] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L559] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L561] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L567] tmp = __VERIFIER_nondet_int() [L569] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L470] COND TRUE waterLevel < 2 [L471] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L577] tmp___0 = __VERIFIER_nondet_int() [L579] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L482] COND FALSE !(\read(methaneLevelCritical)) [L485] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L587] tmp___2 = __VERIFIER_nondet_int() [L589] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L626] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L633] COND TRUE \read(systemActive) [L681] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L684] COND FALSE !(\read(pumpRunning)) [L655] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L658] COND TRUE ! pumpRunning [L778] int retValue_acc ; [L779] int tmp ; [L780] int tmp___0 ; [L532] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L535] COND FALSE !(waterLevel < 2) [L539] retValue_acc = 0 [L540] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L784] tmp = isHighWaterSensorDry() [L786] COND FALSE !(\read(tmp)) [L789] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L791] retValue_acc = tmp___0 [L792] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L660] tmp = isHighWaterLevel() [L662] COND TRUE \read(tmp) [L709] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L412] int tmp ; [L413] int tmp___0 ; [L491] int retValue_acc ; [L494] retValue_acc = methaneLevelCritical [L495] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L417] tmp = isMethaneLevelCritical() [L419] COND TRUE \read(tmp) [L733] int retValue_acc ; [L736] retValue_acc = pumpRunning [L737] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L421] tmp___0 = isPumpRunning() [L423] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product39.cil.c", 3, "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, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 831 SDtfs, 1119 SDslu, 1197 SDs, 0 SdLazy, 166 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred 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, 1062 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 11496 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...